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Dr. Chandan Upadhyay

Associate Professor
School of Materials Science and Technology, IIT(BHU), Varanasi
Phone No(s): 08005304675, 0542-716-5524
Email: cupadhyay.mst@iitbhu.ac.in
Area of Interest: Quantum Materials, Ferroic and Multiferroic Materials, Magnetic Materials, Multifunctional Materials, Computational Materials Science
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Quantum Materials

Quantum materials are classified as materials where quantum effects dominate over larger energy and length scales. In a quantum state, macroscopic properties of materials are governed by ground-state quantum fluctuations in which information is propagated in a correlated manner with temporal evolution. Due to quantum correlations, these materials have a memory to distinguish their widely differing initial conditions, i.e., properties depend on initial conditions. At finite temperatures, thermalization erases the memory of a quantum system by dephasing the quantum correlation. Thermalization puts a limit on the experimental realization of quantum information. This poses the biggest bottleneck in realizing the potential of these materials for their application as quantum devices. Recently, the experimental realization of scrambled quantum information in atomic and bi-particle quantum systems triggered a new hope for studying the exotic quantum behavior of other quantum materials.  A new class of quantum materials, e.g., topological insulators, graphene, Weyl semimetals, superconductors, quantum spin liquids, and spin ices, have found a prominent place in the literature. Rare earth titanates (R2Ti2O7) are one the most studied quantum materials having exotic low-temperature magnetic properties, e.g., spin ice (R=Ho, Dy), spin liquid (R=Tb), and antiferromagnetic ordering (R= Er, Gd). The experimental finding suggests that Ho2Ti2O7 and Dy2Ti2O7 spin ices have multiple ferroelectric transitions of different origins. Apart from the emergence of the dielectric relaxations, the magnetic behavior also shows multiple spin freezing in these materials. The behavior becomes more prominent when one deals with them in a regime where semi-classical phenomena are dominant. Fundamentally classical spin ice, which can descend to quantum spin liquid where quantum fluctuations upon the spin ice states, rule out the possibility of any long-range ordering down to zero temperature. Our group has investigated the emergence of quantum critical point and likely quantum phase transition in the rare earth (RE) pyrochlore, which makes these magnetically frustrated systems an interesting material to investigate further from both points of view, i.e., electronic, dielectric, and magnetic response and their possible coupling.  

Key Publications: 

  1. Evidence of Griffith phase in Quantum critical region of Dy2Ti1.8Mn0.2O7 R. M. Shukla, R. Sain, Martin Tolkiehn, Chandan Upadhyay Journal of Magnetism and Magnetic Materials, 556, 170308 (2022)

  2. Robust spin-ice freezing in magnetically frustrated Ho2GexTi2-xO7 pyrochlore, M Shukla, R Upadhyay, M Tolkiehn, Chandan Upadhyay Journal of Physics: Condensed Matter 32 (46), 465804 (2020)
  3. Role of Chemical Pressure on Optical and Electronic Structure of Ho2GexTi2-xO7 M. Shukla, S. Banik, R. Pandey, Chandan Upadhyay, Journal of Physics: Condensed Matter 32 (11), 115501 (2020)
  4. Signature of Correlated Quantum Tunneling and Thermal dephasing in Quantum-Classical Coupled Ho2Ti2O7 and Dy2Ti2O7 Spin Ices PK Yadav, Chandan Upadhyay Journal of Magnetism and Magnetic Materials, 498 166133 (2020)
  5. Effect of B-site substitution on structural, magnetic and optical properties of Ho2Ti2O7 pyrochlore oxide, PK Yadav, P Singh, M Shukla, S Banik, Chandan Upadhyay Journal of Physics and Chemistry of Solids, 138 109267 (2020)
  6. Dielectric relaxations in Ho2Ti2O7 and Dy2Ti2O7 pyrochlores, PK Yadav, M Tolkiehn, Chandan Upadhyay, Journal of Physics and Chemistry of Solids 134, 201-208 (2019)
  7. Quantum Criticality in geometrically frustrated Ho2Ti2O7 and Dy2Ti2O7 spin ices, PK Yadav, Chandan Upadhyay Journal of Magnetism and Magnetic Materials 482, 44-49 (2019)

 

Static and dynamic magnetic properties of Nanoparticles:

The magnetization dynamics associated with the iron oxide nanomaterials have been the focus of considerable interest from both elementary understanding and potential applications over the decades. Magnetite nanoparticles have drawn significant technological attention due to their efficient clinical applications. Integrating these magnetic nanomaterials with an optically active material, such as gold or silver, in the form of a core-shell nanostructure makes them quite efficient to be used as multimodal agents. Applying these materials in the biomedical field requires a lot of investigation into their structural, optical, and magnetic properties. The group is involved in the studies of these materials, associated properties, and applications. 

 

Key Publications: 

  1. Signatures of consolidated superparamagnetic and spin-glass behavior in magnetite-silver core-shell nanoparticles P Singh, M Shukla, Chandan Upadhyay Nanoscale 10, 22583-22592 (2018)
  2. Novel facets of multifunctional Ag@Fe3O4 core-shell nanoparticles for multimodal imaging applications, P Singh, BK Gupta, NK Prasad, PK Yadav, Chandan Upadhyay Journal of Applied Physics 124 (7), 074901 (2018).
  3. Role of Silver Nanoshells on Structural and Magnetic Behavior of Fe3O4 nanoparticles, P Singh, Chandan Upadhyay, Journal of Magnetism and Magnetic Materials. 458, 39–47 (2018).
  4. Size selectivity of magnetite core-(Ag/Au) shell nanoparticles for multimodal imaging applications P. Singh, Chandan Upadhyay, Materials Research Express 4 (2017), 105401

Patent: 

JANUS SHAPED SILVER-MAGNETITE NANOPARTICLES AND A METHOD OF PREPARATION THEREOF; Application No. 201911020251, May 2019

Dr. Chandan Upadhyay is an Associate Professor in the Materials Science and Technology School. Dr. Upadhyay received a Master's in Physics from Banaras Hindu University in 1998 and a Ph.D. in Physics in 2004  from the Indian  Institute of Technology, Kanpur. He had his post-doctoral fellowship at "Laboratory of Chemical Physics and Microbiology for Environment " UMR-7564, CNRS-University of Henri Poincaré Nancy1, France; Mars-Mössbauer Group, Institut für Anorganische und Analytische Chemie, Johannes Gutenberg-Universität Mainz, Germany, and IFF –Soft matter division, Forschungszentrum, Jülich, Germany. He joined the School of Materials Science and Technology in February 2008.

 

Research Interests: 
Static and dynamic magnetic properties of Nanoparticles
Quantum Materials
Computational Materials Science
Synthesis, Characterization, and Physical Properties of Nanostructures,

Patents Granted: 

1. FRICTION REDUCING COATING ON ORTHODONTIC WIRES; Application No. 201911013104, April 2019, Granted June 2023.
2. JANUS SHAPED SILVER-MAGNETITE NANOPARTICLES AND A METHOD OF PREPARATION THEREOF; Application No. 201911020251, May 2019 Granted May 2023. 

Publications: 

 

64. Band-gap tuning in Mn-doped Er2Ti2O7: insight from the experimental and theoretical approach, R. Upadhyay, M. Shukla, R. K. Pandey, Chandan Upadhyay, Journal of Alloys and Compounds (in press). (2024)

63. r-GO coated magnetic high entropy alloy/oxide nanocomposites as highly efficient Fenton and photo-Fenton catalysts D Kumar, NS Anuraag, C Mohapatra, U Kumar, Debashish Sarkar, M Vasundhara, I Sinha, Chandan Upadhyay, NK Prasad Ceramics International, 50, 12146 (2024)

62. Mechanochemical synthesis of MnBi/Fe3C@C exchange coupled hard magnetic nanocomposites, NS Anuraag, SK Shaw, Chandan Upadhyay, NK Prasad, Journal of Solid State Chemistry 329, 124403 (2024)

61. Emergence of field-induced memory effect in spin ices, P K Yadav, R Upadhyay, R Kumar, P Nukala, Chandan Upadhyay Journal of Physics: Condensed Matter 35, 495601,(2023)

60. Effect of Mn doping on the electronic and optical properties of Dy2Ti2O7: a combined spectroscopic and theoretical study, R. Upadhyay, M. Shukla, R. K Pandey, Chandan Upadhyay Journal of Physics: Condensed Matter 35, 335502  (2023)

59. Antiferromagnetic ordering to cluster-glass-like transition behavior in DyVO4 R Upadhyay, M Shukla, Chandan Upadhyay Journal of Physics and Chemistry of Solids 173, 111108 (2023)

58. Evidence of Griffith phase in Quantum critical region of Dy2Ti1.8Mn0.2O7 R Upadhyay, M Shukla, R Sain, M Tolkiehn, Chandan Upadhyay Journal of Magnetism and Magnetic Materials 556, 170308 (2023)

57. Structural and Magnetic Properties of Dimeric and Tetrameric Copper (II) Complexes with Simple Bidentate Ligands and Phosphate Bridges P Sureshbabu, Chandan Upadhyay, S Sabiah ChemistrySelect 7 (28), e202200916 (2022)

56. Tunable photoluminescence and energy transfer of Eu3+, Ho3+-doped Ca0.05Y1. 93-xO2 nanophosphors for warm white LEDs applications. A Dwivedi, M Srivastava, A Srivastava, Chandan Upadhyay, SK Srivastava, Scientific Reports 12 (1), 1-15 (2022

55. A reversible and efficient probe for dual mode recognition of Al3+ and Cu2+ with logic gate behavior: Crystal structure, theoretical and in-vivo bio-imaging investigations P Yadav, R Kumar, S Srikrishna, AK Pandey, LH Choudhury, Chandan Upadhyay, Vinod P Singh, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 267, 120552 (2022)

54. Frequency upconversion, paramagnetic behavior and biocompatibility of Gd2O3: Er3+/Yb3+ nanorods S Singh, G Kedawat, JH Park, B Ghorai, UK Ghorai, Chandan Upadhyay, B. A. Kaipparettu, B. K. Gupta, Journal of Photochemistry and Photobiology 8, 100081 (2021)

53. Optical and Magnetic Properties of Cubic Double Perovskites Ba2RSbO6 (R= Dy, Gd) Coordinated to Lattice Dynamical and Crystal‐Field Computations, YM Jana, S Nandi, AA Biswas, HC Gupta, R Upadhyay, Chandan Upadhyay, D. Samanta, Physica status solidi (b), 2100460 (2021)

52. Physico-chemical characterization of kajjali, black sulphide of mercury, with respect to the role of sulfur in its formation and structure N Joshi, MK Dash, Chandan Upadhyay, V Jindal, PK Panda, M Shukla Journal of Ayurveda and Integrative Medicine 12 (4), 590-600 (2021)

51. Probing into Bifunctional Luminomagnetic Upconverting Nanorods for External Magnetic Tracking Applications S Singh, B Ghorai, P Kumar Yadav, U Kumar Ghorai, Chandan Upadhyay, Bipin Kumar Gupta; ChemistrySelect; 5 (39), 12159-12167 (2020)

50. Robust spin-ice freezing in magnetically frustrated Ho2GexTi2-xO7 pyrochlore; M Shukla, R Upadhyay, M Tolkiehn, Chandan Upadhyay
Journal of Physics: Condensed Matter 2020 https://doi.org/10.1088/1361-648X/abace1

49. Synthesis of uniformly dispersed large area polymer/AgNPs thin film at Air-liquid interface for electronic application, R Mishra, RK Pandey, S Jana, Chandan Upadhyay, R Prakash Materials Today Communications, 101191 Doi: https://doi.org/10.1016/j.mtcomm.2020.101191 

48. Role of Chemical Pressure on Optical and Electronic Structure of Ho2GexTi2-xO7 M. Shukla, S. Banik, R. Pandey, Chandan Upadhyay, Journal of Physics: Condensed Matter, 32 (11) 115501 (2020) 

47. Signature of Correlated Quantum Tunneling and Thermal dephasing in Quantum-Classical Coupled Ho2Ti2O7 and Dy2Ti2O7 Spin Ices PK Yadav, Chandan Upadhyay, Journal of Magnetism and Magnetic Materials, 166133 (2019) https://doi.org/10.1016/j.jmmm.2019.166133

46. Effect of B-site substitution on structural, magnetic and optical properties of Ho2Ti2O7 pyrochlore oxide, PK Yadav, P Singh, M Shukla, S Banik, Chandan Upadhyay, Journal of Physics and Chemistry of Solids, 109267 (2019) https://doi.org/10.1016/j.jpcs.2019.109267

45. Evidence for pressure induced polarization rotation, octahedral tilting and reentrant ferroelectric phase in tetragonal (Pb0.5Bi0.5)(Ti0.5Fe0.5)O3,  P Singh, Chandan Upadhyay, Z KonÔpková, HP Liermann, D Pandey, Phys. Rev. Materials 3, 094405 (2019)

 44. Janus shaped plasmonic-magnetic silver-magnetite nanostructures for multimodal applications, P Singh, P Bharti, A Gangwar, NK Prasad, Chandan Upadhyay, Japanese Journal of Applied Physics 58, 105001 (2019)
 
43. Dielectric relaxations in Ho2Ti2O7 and Dy2Ti2O7 pyrochlores, PK Yadav, M Tolkiehn, Chandan Upadhyay, Journal of Physics and Chemistry of Solids 134, 201-208 (2019)
 
42. Quantum Criticality in geometrically frustrated Ho2Ti2O7 and Dy2Ti2O7 spin ices, PK Yadav, Chandan Upadhyay Journal of Magnetism and Magnetic Materials 482, 44-49 (2019)
 
41. Effect of A-site Fe substitution on the magnetic behavior of Dy2Ti2O7 Spin Ice, PK Yadav, PK Harijan, A Tripathi, Chandan Upadhyay, Journal of Magnetism and Magnetic Materials 481, 221-226 (2019)
 
40. Di and Tetranuclear Cu(II) Complexes with Simple 2-Aminoethylpyridine: Magnetic Properties, Phosphodiester Hydrolysis, DNA Binding/Cleavage, Cytotoxicity and Catecholase Activity, P Sureshbabu, QM Junaid, Chandan Upadhyay, W Victoria, V Pitchavel, S. Natarajan, S. Sabiah Polyhedron 164, 202-218 (2019)
 
39.  Néel transition in the multiferroic BiFeO3-0.25PbTiO3 nanoparticles with anomalous size effect PK Harijan, A Singh, Chandan Upadhyay, D Pandey Journal of Applied Physics 125 (2), 02410 (2019)
 
38. Signatures of consolidated superparamagnetic and spin-glass behavior in magnetite-silver core-shell nanoparticles P Singh, M Shukla, Chandan Upadhyay Nanoscale 10, 22583-22592 (2018)
 
37.  Photoluminescence behavior of a stimuli-responsive Schiff base: Aggregation induced emission and piezochromism P Yadav, AK Singh, Chandan Upadhyay, VP Singh, Dyes and Pigments 160, 731-739 (2018)
 
36. Novel facets of multifunctional Ag@Fe3O4 core-shell nanoparticles for multimodal imaging applications, P Singh, BK Gupta, NK Prasad, PK Yadav, Chandan Upadhyay Journal of Applied Physics 124 (7), 074901 (2018).
 
35. Fine tuning of size and morphology of magnetite nanoparticles synthesized by microemulsion, P. Singh, Chandan Upadhyay, AIP Conference Proceedings 1953 (1), 030051 (2018).
 
34. Role of Silver Nanoshells on Structural and Magnetic Behavior of Fe3O4 nanoparticles, P Singh, Chandan Upadhyay, Journal of Magnetism and Magnetic Materials. 458, 39–47 (2018).
 
33. Size selectivity of magnetite core-(Ag/Au) shell nanoparticles for multimodal imaging applications  P. Singh, Chandan Upadhyay, Materials Research Express 4 (2017), 105401
 
32. Self‐Assembly of Solution‐Processable Polyindole via Langmuir‐Blodgett Technique: An Insight to Layer‐Dependent Charge Transport and Electronic Parameters, R Mishra, RK Pandey, Chandan Upadhyay, R Prakash;  ChemistrySelect 2 (2017), 6009-6015
 
31.  DDAB‐Triggered, Size‐Sorted, Instant Phase‐Switching of Silver Nanoparticles, R Mishra, S Mishra, Chandan Upadhyay, R Prakash, ChemistrySelect 2 (2017), 3028-3034

30. Green synthesis of silver nanoparticles using prunus amygdalus extract and their antimicrobial activity, S.K. Srikar, D.D. Giri, Chandan Upadhyay, P.K. Mishra, S.N. Upadhyay, Advanced Materials Research, 1119 (2015), 165. Doi:10.4028/www.scientific.net/AMR.1119.165

29. Urease Immobilized Fluorescent Gold Nanoparticles for Urea Sensing, UK Parashar, NR Nirala, Chandan Upadhyay, PS Saxena, A Srivastava, Applied biochemistry and biotechnology 176 (2015), 480
 
 28.  Surface plasmon coupled metal enhanced spectral and charge transport properties of Poly (3, 3 ″′-dialkylquarterthiophene) Langmuir Schaefer film, RK Pandey, SK Yadav, Chandan Upadhyay, R Prakash, H Mishra, Nanoscale 7 (2015), 6083

27.  Extraordinary enhancement of Néel transition temperature in nanoparticles of multiferroic tetragonal compositions of (1−x)BiFeO3-xPbTiO3 solid solutions, Chandan Upadhyay, PK Harijan, A Senyshyn, R Ranganathan, Dhananjai Pandey, Applied Physics Letters 106 (2015), 093103.

26. Molecular self-ordering and charge transport in layer-by-layer deposited poly (3, 3’-dialkylquarterthiophene) films formed by Langmuir-Schaefer technique, RK Pandey, AK Singh, Chandan Upadhyay, R Prakash, Journal of Applied Physics 116 (2014), 094311

25.  Mössbauerite, Fe3+O4(OH)8[CO3]·3H2O, the fully oxidized ‘green rust’ mineral from Mont Saint-Michel Bay, France, J.-M. R. Génin, S. J. Mills, A. G. Christy, O. Guérin, A. J. Herbillon, E. Kuzmann, G. Ona-Nguema, C. Ruby, Chandan . Upadhyay,  Mineralogical Magazine 78 (2014) 447 DOI: 10.1180/minmag.2014.078.2.14

24.  Pressure Dependent Surface Morphology and Raman Studies of Semicrystalline Poly(indole-5-carboxylic acid) by Langmuir Blodgett Technique, Rajiv K. Pandey, Chandan Upadhyay and  Rajiv Prakash, RSC Adv., 3 (36), (2013) 15712, DOI: 10.1039/C3RA41895B

23.  Redox topotactic reactions in FeII− III (oxy)hydroxycarbonate new minerals related to fougèrite in gleysols: “trébeurdenite and mössbauerite” Jean-Marie R. Génin, O. Guérin, A. J. Herbillon, E. Kuzmann, S. J. Mills, G. Morin, G. Ona-Nguema, C. Ruby, Chandan Upadhyay, Hyperfine Interaction 204  (2012) 71

22.  Cation distribution of Ni0.5Zn0.5Fe2O4 nanoparticles, R. K. Singh, Chandan Upadhyay, S. Layek, A. Yadav; International Journal of Engineering, Science and Technology 2, (2010) 104

21.     Effect of size and synthesis route on the magnetic properties of chemically prepared nanosize ZnFe2O4, Chandan Upadhyay, H.C. Verma, V. Sathe and A.V. Pimpale;  Journal of Magnetism and Magnetic Materials 312, (2007) 271.                                     

20. Structure and thermodynamics of ferrous, stoichiometric and ferric oxyhydroxycarbonate green rusts; redox flexibility and fougerite mineral, JMR. Génin,  C. Ruby, Chandan Upadhyay; Solid state science  8, (2006) 1330.

19. Speciation of iron; characterization and structure of green rusts and FeII–III oxyhydroxycarbonate fougerite ; Jean-Marie R. Génin, Mustapha Abdelmoula, Christian Ruby and Chandan Upadhyay; Comptes Rendus Geosciences  338, (2006), 402.

18. In Situ Redox Flexibility of FeII-III Oxyhydroxycarbonate Green Rust and Fougerite, christian Ruby, Chandan Upadhyay, Antoine Géhin, Georges Ona-Nguema, and Jean-Marie R. Génin; Environmental Science & Technology 40, (2006) 4696

17.  Fougerite and FeII- III hydroxycarbonate green rust; ordering, deprotonation and/or cation substitution;structure of hydrotalcite-like compounds and mythic ferrosic hydroxide Fe(OH)(2+x) ; JMR Génin, R. Aïssa, M. Abdelmoula, O. Benali, V. Ernstsen, G.O. Nguema, Chandan Upadhyay and Christian Ruby; Solid state science  7, (2005) 545

16.  Effect of Ni Doping on the Properties of Fine Magnetite Particles,  M. Mohapatra, B. Pandey, Chandan Upadhyay, S. Anand, R.P. Das, H.C. Verma;  Journal of Magnetism and Magnetic Materials 295, (2005) 44.

15.   Anomalous  change  in  electron  density  at  nuclear  sites  in  nanosize  zinc  ferrite,  Chandan Upadhyay and H.C. Verma; Applied Physics Letters 85, (2004) 2074.

14.  Cationic distribution in Nanosized Ni-Zn Ferrites, Chandan Upadhyay, H.C. Verma and S. Anand Journal of Applied Physics 95, (2004)  5746.

13. Identification of positron trapping sites in nanocrystalline ZnFe2O4 by coincidence Doppler broadening measurements P. M. G Nambissan, Chandan Upadhyay, H. C. Verma; Materials Science Forum  445, (2004) 162.

12.  Positron lifetime spectroscopic studies of nanocrystalline ZnFe2O4, P.M.G. Nambissan, Chandan Upadhyay, and H.C. Verma; Journal of Applied Physics 93, (2003) 6320.
 
11.  Effect of addition of Cu(II), Ni(II) and Co(II) ions on conversion of crystalline goethite to magnetite in NH3–FeSO4–H2O medium, M. Mohapatra, S. Anand, R. P. Das, Chandan Upadhyay and H. C. Verma; International Journal of Mineral Processing 69, (2003) 75

10.  Magnetic properties of a  partially inverted zinc ferrite synthesized by a new coprecipitation technique using urea; A. Kundu, Chandan Upadhyay and H. C. Verma; Physics Letters A 311, (2003) 410.

9.   Effect of preparation conditions on formation of nanophase Ni–Zn ferrites through hydrothermal technique, Chandan Upadhyay, Devabrata Mishra, H. C. Verma, S. Anand and R. P. Das; Journal of Magnetism and Magnetic Materials 260, (2003) 188.

8.   Evidence of impact at Permian-Triassic boundary as revealed by Mössbauer Spectroscopy, H.C. Verma, Chandan Upadhyay, R.P. Tripathi, N. Bhandari, A.D. Shukla; Hyperfine Interactions 141-142, (2002) 357.

7.   Thermal decomposition pattern and particle size determination of iron minerals associated with Cretaceous-Tertiary boundary at Gubbio, H.C. Verma, Chandan Upadhyay, Amita Tripathi, R.P Tripathi and N. Bhandari; Meteoritics & Planetary Science 37, (2002) 901.

6.   Global Appearance of magnetic and superparamagnetic iron phase in K/T boundary clays, N.Bhandari, H.C. Verma, Chandan Upadhyay, Amita Tripathi and R.P. Tripathi; Geol. Soc. Amer. Spl. Pap 351, (2002) 445.

5.   Preparation and characterization of Cu(II), Ni(II) or Co(II) ion-doped goethite samples and their conversion to magnetite in NH3–FeSO4–H2O medium, M. Mohapatra, S. Anand, R. P. Das, Chandan Upadhyay and H. C. Verma; Hydrometallurgy 66, (2002) 125.

4.   Aqueous reduction of crystalline goethite under ammoniacal conditions, M. Mohapatra, S. Anand, R. P. Das, Chandan Upadhyay and H. C. Verma; Hydrometallurgy 65, (2002) 227.

3.   Cation Distribution in Co-Ti doped Barium Hexaferrite, Chandan Upadhyay, H.C. Verma, D.K. Rai and J.Kumar;  Indian J. Physics  75A (4), (2001) 405

2.   Mössbauer studies of nanosize Mn1-xZnxFe2O4, Chandan Upadhyay, H.C. Verma, C. Rath, K.K.  Sahu, S. anand, R.P. Das and N.C. Mishra; Journal of Alloy & Compound 326, (2001) 94.

1.   Appearance of Superparamagnetism on heating nanosize Mn0.65Zn0.35Fe2O4; Chandana Rath, N. C. Mishra, S.A. Anand, R.P. Das, K.K. Sahu, Chandan Upadhyay and H.C. Verma; Applied Physics Letters 76, (2000) 475.
 
 
General Articles
1.   Magnetic Nanoparticles: Issues and Perspective, H.C. Verma and Chandan Upadhyay; Directions 6(2) (2004) 63.
 
Conferences/Symposia/Workshops Presentations:  (Partial)
 
20.  Effect of small B site Fe stuffing on crystal structure and low-temperature spin dynamics of Ho2Ti2O7 Spin ice, P. Yadav and Chandan Upadhyay, National Seminar of Crystallography-45, Indian Institute of Technology (BHU), Varanasi.
 
19. Green synthesis of silver nanoparticles using prunus amygdalus extract and their antimicrobial activity, S.K. Srikar, D.D. Giri, C. Upadhyay, P.K. Mishra, S.N. Upadhyay, International Conference on Key Emerging Materials (ICKEM), March 21-23, 2015, Singapore.
 
18. Green synthesis of silver nanoparticles using a single-step method, S.K. Srikar, D.D. Giri, C. Upadhyay, P.K. Mishra, S.N. Upadhyay, International Conference on Emerging Trends in Biotechnology (ICETB), November 6-9, 2014, Delhi India.
 
17.  A unique approach to the synthesis of Graphene Oxide Paper and its surface decoration with various Nanoparticles for potential applications. S. Umrao, S. Abraham, Chandan Upadhyay, B.P. Asthana and A. Srivastava, International Conference and Workshop on Nanostructured Ceramics and other Nanomaterials (ICWNCN), March 13-16, 2012, Delhi India. 
​
16.  Raman and Mössbauer spectroscopic characterisation of sulphate minerals from the mars analogue sites at Rio-Tinto and Jarso ravine Spain. F. Rull, I. Fleischer, J. Martinez-Frias, A. Sanz, C. Upadhyay and G. Klingelhöfer 39th Luner and planetary science conference March 10-14, 2008 Houston Texas USA. http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1616.pdf

15. Jarosite at meridiani planum and weathering rinds at gusev crater: interpretation of Mössbauer spectra obtained during the mars exploration rover mission, G. Klingelhoefer, I. Fleischer, C. Upadhyay, D. Rodionov, C. Schroder, M. blumers, R.V. Morris, M. Pathofer, R. Jung-Pothmann, N. Tahir, T. Hager and W. Tremel; International Conference on Application of Mössbauer Effect (ICAME-2007) October 14-19 (2007) IIT Kanpur (India).

 14.  Formation BaCO3 nanoparticles in C12E5 stabilised microemulsions: The role of pre-structures G. Shanmugavadivelu, Chandan Upadhyay and W. F.C. Sager; 43rd Meeting of the German Colloid Society, October 8-10, 2007 Mainz, Germany. (Poster)

13.  Crystallization  of  BaCO3  nanoparticles   in   nonionic   water-in-oil   Microemulsions,  G. Shanmugavadivelu, Chandan Upadhyay, W. F.C. Sager, 21st  Conference of the European Colloid and Interface Society (ECIS 2007). September 10-14, 2007, Geneva, Switzerland. (Poster)

12.  Ergebnisse der Mars-Exploration-Rover Mössbauer- Spektrometer aus dem Jahr 2006; I. Fleischer, C. Schröder, D. Rodionov, M. Blumers, Jordi G. Lopez, J. F. Sanchez, M. Hahn, Chandan Upadhyay and G Klingelhöfer DPG Conferences, March 26-30, 2007 Regensburg, Germany. (Poster)

11.  Weathering of iron-bearing minerals and rocks under extraterrestrial conditions investigated by Mössbauer spectroscopy, XRD, XRF, and other methods, Klingelhöfer, G., C. Schröder, W. Tremel, I. Fleischer, and Chandan. Upadhyay (2007), 4th Colloquium of the SPP 1115 “Mars and the Terrestrial Planets”, February 19-20, 2007 Berlin, Germany. (Poster)

10  Classification of Martian Jarosite. Chandan Upadhyay, G. Klingelhöfer, I. Fleischer,  C. Schröder, D. Rodionov, M. Panthöfer, R. Jung-Pothmann, N. Tahir, T. Hager and W. Tremel, 38th Luner and planetary science conference March 12-16, 2007 Houston Texas USA. http://www.lpi.usra.edu/meetings/lpsc2007/pdf/1835.pdf

9.  Iron II- III Minerals: International Conference on Application of Mössbauer Effect (ICAME-2005) Sept. 2005, Univ. of Montpellier, France.

8.  Magnetic Nanoparticles: Synthesis, Properties and their Biological Applications. April 2004 Tata Institute of Fundamental Research (TIFR) Bombay India

7.  Size dependent cation Inversion in Nanosized ZnFe2O4. Condensed Matter Physics Workshop - March 2003, IIT Kanpur India.

6.  Evidence of impact at Permian-Triassic boundary as revealed by Mössbauer Spectroscopy – International Conference on Application of Mössbauer Effect (ICAME-2001) Sept. 2001 Univ. of Oxford, UK.

5.  Nanoscience: Issues and Perspectives. Conference of Research Students, May 2001, BHU, Varanasi, India.

4.  Magnetic reordering in ultrafine ZnFe2O4. Condensed Matter Physics Workshop - March 2001, IIT Kanpur India.

3.  Unusual magnetic ordering in nanosize zinc ferrite, Material Research Society of India, Annual Meeting, January 2001, SINP Calcutta, India.

2.  Nano-sized iron phases at the K/T and P/T bounderies revealed by Mössbauer Spectroscopy,  H.C. Verma, Chandan. Upadhyay, R.P. Tripathi, A. Tripathi, A.D. Shukla and N.Bhandari, 32nd  Luner and planetary science conference March 12-16, 2007 Houston Texas USA.  http://www.lpi.usra.edu/meetings/lpsc2001/pdf/1270.pdf

1. Mössbauer Spectroscopy of K/T Boundary Clays: Characteristics of Iron Bearing Minerals.  N. Bhandari, H.C. Verma, Amita Tripathi, Chandan. Upadhyay and R.P. Tripathi, catastrophic events and mass extinctions: Impact and Beyond, July 9-12 2000 Vienna, Austria.  www.lpi.usra.edu/meetings/impact2000/pdf/3031.pdf

 

 

Name & Roll No. Research Interests Contact Status 

PhD Completed

  
Mr. Rajiv Kr Pandey  Organic Electronics     Thesis Completed (as Co-Supervisor)
Mr. Pappu Kumar Harijan Multiferroic Nanoparticles pappukmr10@gmail.com Thesis Completed
Ms. Pinki Singh Multifunctional Nanoparticles for multimodal applications. psingh.rs.mst13@itbhu.ac.in Thesis Completed 
Ms. Richa Mishra  Organic Electronics    Thesis Completed (as Co-Supervisor)
Mr. Pramod Kumar Yadav Strongly correlated quantum systems with competing or frustrated interaction. pyadav.rs.mst13@itbhu.ac.in Thesis Completed
Ms. Manjari Shukla Study of spin disordered systems. manjaris.rs.mst15@iitbhu.ac.in Thesis Completed
Mr. Rajnikant Upadhyay Frustrated Magnetism    Thesis Completed

 

PhD Ongoing
Mr. Amit Bar Applications of Layered Double Hydroxides    Ongoing
Ms. Rachana Sain Spin Dynamics of Mesoscopic Magnetic Systems    Ongoing
Mr. Sanjeev Kumar 2-D systems for Water Remediation    Ongoing
Mr. Sudarshan Sarkar LDHs for Water Remediation    Ongoing
Ms. Sunayana Bora Hybrid Materials for Pollutant Detection.    Ongoing

 
       

 

M. Tech. Students

  
   

 

  
       
       
       

Chairman
Chairman, Curriculum Review Committee (2019-2024)

Member (Institute & Departmental Committees) 
Member, Academic Senate, IIT(BHU) (2012-2017)
Member, Undergraduate Curriculum Review Committee (UG-CRC), IIT(BHU) [2014-2019]
Member, Undergraduate Curriculum Monitoring Committee (UG-CMC), IIT (BHU) [2014-2019]
Member, Humanities Core Group, IIT (BHU) [2014-2019]
Member, Department of Architecture, Design and Planning Core Group, IIT (BHU) [2018-2020]
Member, Web Management and E-mail Services, committee (WMES), IIT (BHU) [2013-Feb 2106]
Member, Undergraduate Manual Drafting Committee, IIT (BHU) [2012-2013]
Convener, Department Undergraduate Committee, Department of Architecture, Design and Planning, IIT(BHU) (2019-2020)
Convener, Department Undergraduate Committee, SMST, IIT(BHU) (2014-2016)
Convener, School Faculty Council (2014-2016)
Member, Department Faculty Affairs Committee, SMST, IIT (BHU) (2018-)
Member, Department Faculty Affairs Committee, Department of Architecture, Design and Planning, IIT(BHU) (2019-2020)
Member, Department Postgraduate Committee, SMST, IIT(BHU)
Member, Department Undergraduate Committee, SMST, IIT(BHU)
Department Research Council, SMST, IT-BHU (2011-2012)
Department Purchase Committee, SMST, IIT-BHU [Multiple times]
Sports Council, Student Gymkhana, IT-BHU (2008-2010)
Co-opted Member
Department Research Council, SMST, IT-BHU (2008-2011)

Other Responsibilities
Secretary (Academic Affairs), Physics Society; Dept. of Physics IIT Kanpur – 2001.
Student Member, Senate Post Graduate Committee; IIT Kanpur – 2001- 2002.

Events Organized
- Short-term course on Materials Characterization for Engineers; IIT (BHU), Varanasi, India 17-21 June 2019: Course Convenor
- Short-term course on Materials Characterization for Engineers; IIT (BHU), Varanasi, India 24-29 December 2018: Course Co-Convenor
- Short-term course on Geometrical & Mathematical Crystallography with Application to Structural studies; IIT (BHU), Varanasi, India 14-19 February 2017: Course Convenor
- 45th National Seminar on Crystallography, IIT (BHU), Varanasi, India 9-12 July 2017: Co-Convenor
- Short-term course on Geometrical & Mathematical Crystallography with Application to Structural studies; IIT (BHU), Varanasi, India 14-19 February 2017: Course Convenor
- IUCr School Symmetry Relationships between Crystal Structures with Application to Structural Phase Transitions; IIT (BHU), Varanasi, India 27-31 October 2014: Organising Secretary

Doctor of Philosophy: Seven (Completed),  Five (ongoing)

Title: “Self assembly of poly (3, 3’’’-dialkylquaterthiophene) through facile techniques and its device application.”  by Rajiv Pandey (as co-supervisor)
Title: “Structural and Magnetic studies on Nano-structured (1-x)BiFeO3-xPbTiO3 Multiferroic solid solution” by Pappu Kumar
Title: “Studies on superparamagnetic silver-coated magnetite core-shell nanostructures for multimodal applications” by Pinki Singh
Title: “Development of novel interfacial technique for formation of guided assembly of functional conducting polymers & nanocomposite for device applications” by Richa Mishra (as co-supervisor)
Title: “Study of Dielectric and Magnetic Properties of Magnetically Frustrated R2Ti2O7 (R= Ho, Dy) and Their Doped Derivatives by Pramod Yadav
Title: "Role of Chemical Pressure on the Magnetic and Electronic Properties of Magnetically Frustrated Holmium Titanates and Germanates” by Manjari Shukla

Title: Role of Mn on the magnetic and electronic properties of magnetically frustrated Ising Dy2Ti2O7 and XY-Er2Ti2O7 pyrochlores” by Rajnikant Upadhyay
 

Master of Dental Surgery: Eight (completed),  One (Ongoing) 

1. Title: Evaluation of tribology of nanoparticles coated TMA orthodontic wire in stainless steel brackets under dry and Wet conditions: An in-vitro study by Dr. Shruti Sharma

2. Title: An Evaluation of Abrasive Effects of toothbrushes and toothpaste on orthodontic materials and natural tooth under Simulated Conditions by Dr. Sunil Kumar Rath

3. Title: Studies on surface modification of orthodontic wires by Nanoparticles: a case study in the context of TMA/SS wires by Dr. Bimlesh Kumar Singh

4. Title: Role of particle size of the nanoparticle coating on frictional behavior of orthodontics wires by Dr. Indumathi

5. Title: Integration of Nanobioadhesion in Orthodontic Bonding by Dr. Mohana Nethi

6. Title: "Effect of Incorporating Silver and Copper Nanoparticles on Mechanical and Antimicrobial Properties of Maxillofacial Silicone Elastomer. An in-vitro study" by Dr. Pinki Gupta

7. Title: Effect of Silver and Titanium Dioxide nanoparticle incorporation on mechanical, physical, and antimicrobial properties of maxillofacial silicone elastomers before and after outdoor weathering, an In-Vitro study. by Dr. Abhishek Sarkar

8. Title: Integration of Nanobio adhesion in Orthodontic Bonding-an In-Vivo and in-Vitro study by Dr. Arya K. Das
 

  
Master of Technology: Twenty-eight (completed), Four (ongoing)  

1.    Synthesis of self-assembled Nanoparticles, by Ms. Shilpee Jain (July 2009)
2.    Optical Properties of Photonic Bandgap Materials with Defects of different Materials and Grading Profiles, by Ms. Sarita Bharti (July 2010)
3.    Synthesis and Characterization Organic Multilayer and Dye-Sensitized Photovoltaic Cells, by Mr. Parikshit S. Bhandiwad  (July 2010)
4.    Synthesis and Characterization of Core-Shell Magnetic Nanoparticles, by Mr. Sachin Kumar (July 2012)
5.    Preparation of Fe3O4 Polyaniline nanocomposite for EMI Shielding application by Mr. Apoorav Joshi (July 2012)
6.    Studies of Multifunctional Materials as Imaging Agents, by Ms. Pragya Shukla (July 2013)
7.    Role of synthesis parameter on the morphology of -Fe2O3,  by Mr. Ashok Kr. Naik (July 2013)
8.    Synthesis and Characterization of (Magnetite/Silver) Core /Shell Nanoparticles for Biomedical Applications, by Ms. Seema Shankhwar (July 2014)
9.    Structural Health Monitoring using Piezoelectric Sensor, by Mr. Saurabh Katiyar (July 2014)
10.  Particle size-dependent structural studies in distorted spinels, by Ms. Pragya Singh (July 2015)
11.  Microwave absorption in Ni-Zn ferrite nanoparticles, by Mr. Abhimanyu Arunkumar Shah (July 2015)
12.  Graphene-based supercapacitor and its characterizations by Mr. Prashant Singh (July 2016)
13.  Size and Morphology Control of Ni0.5Zn0.5Fe2O4 by Mr. B. Rakesh (July 2016)
14.  Development of magnetic nanoparticles conducting polymer composite for Microwave absorption by Mr. Devansh Sharma (July 2017)
15.  Synthesis and structural characterization of asymmetric Nicle-Zinc ferrites by Ms. Rupam Kumari (July 2017)
16.  Studies on the effect of some plant extracts as corrosion inhibitors by Mr. Kamal Kishor (July 2017)
17.  Microemulsion-assisted synthesis and characterization of uncoated and silver-coated iron oxide nanoparticles by Ms. Purnima Bharti. (July 2018)
18.  Electronic structure of RE2XO5 (RE=Ho, Dy; X=Ge, Ti ) by Mr. Ayush Voleti (September 2019)
19.  Synthesis of Goethite nanoflakes and associated characterizations by Ms. Aradhna Tiwari (July 2019)
20.  Synthesis and Characterization of Iron-oxy-hydroxides by Ratnadeepa Shingre (August 2020)
21.  Prototype for water remediation using Iron-oxy-hydroxides by Jishnu Rijmon (October 2020) 
22.  Layered double hydroxides for water remediation by Sudarshan Sarkar (July 2021) 
23.  Simulation of RADAR Absorption Characteristics by Kaoustav Pal (July 2021) 
24.  Layered double hydroxides for CO2 capture by Vineeth K. Raju (July 2021)
25.  Machine Learning in Materials Science by Raghunayak Ramavath (July 2022)
26.  Largescale assembly of 2-D Materials by Mohit Anand (July 2022)
27.  Electromagnetic absorption properties of M25 grade concrete mix design using Vector Network Analyzer (VNA) by Sandeep Ekka (July 2023)
28.  Machine Learning based prediction of Space group number of cubic crystal system by (July 2023)

 

 

1. Title:  Synthesis of Ni-Zn, Co-Zn and Ni-Co-Zn ferrites and studies effect of shape, size and composition on their microwave properties as PI.

Funding Agency: DLJ, Jodhpur, India Period: 2012-2015 Amount: 9.5 Lakhs

2. Title: DNA Based Molecular Electronics as Co-PI

Funding Agency: Department of Bio-Technology Period: 2013-2016 Amount: 30.0 Lakhs

3. Title: Study of relaxation mechanism of magnetic nanoparticles as PI

Funding Agency: Indian Institute of Technology (BHU) Period: 2017-2019 Amount: 15.0 Lakhs

4. Title: Development of prototype for water remediation using layered double hydroxides as PI

Funding Agency: Design and Innovation Centre, IIT (BHU), Varanasi Period: 2017-2019 Amount: 2.0 Lakhs

5. Title: University with potential of excellence as Participating Member

Funding Agency: University Grant Commission, Period: 2012-2018 Amount: 5000.0 Lakhs

6. Title: Development of Pyrochlore oxides as electrode materials as PI

Funding Agency: CERD, Indian Institute of Technology (BHU) Varanasi Period: 2018-2019 Amount: 4.5 Lakhs

7. Title: FIST-II support to SMST, IIT (BHU) Varanasi as Co-PI

Funding Agency: Department of Science and Technology, India Period: 2019-2024 Amount: 390.0 Lakh

8. Title: High Performance Rare Earth Free Nanocomposite Permanent Magnets for Advanced Motors and

Alternative Energy Applications as Co-PI

Funding Agency: Science and Engineering Research Board, India Period: 2019-2022 Amount: 56.90 Lakhs

9. Title: Defects Analyses of Compound Semiconductor wafers as PI

Funding Agency: Applied Materials India Pvt. Ltd  Period: 2021-2022 Amount: 10.20 Lakhs

10. Title: Correlation studies of copper artifacts (2500-200BCE) from Varanasi region and copper mining and smelting in tribal areas of Singhbhum as PI

Funding Agency: Ministry of Education: 2022-2024 Amount: 15.20 Lakhs

 

Ph.D. students and postdocs, having National Fellowships, are invited to join in the subject area of  Nanostructures, Computational Materials Science, and Quantum Materials.