Faculty Directory

Dr. Sonalika Vaidya

Assistant Professor (Scientist-D)

We are looking for prospective PhD candidates (Self-funded) in the following areas:

  • Understanding growth behaviour using SAXS
  • Electrocatalysis

Our group is working in two areas. In one, we are focused on designing anisotropic, core-shell, self-assembled nanostructures with ideal and controllable morphology, size, and structure and formation of their oriented assemblies. The nanostructures designed are studied for their photocatalytic and electrocatalytic applications. In this regard, various structural parameters such as crystal structure, exposed surfaces influencing their performance are investigated.

Our other interest focuses on studying nucleation and growth of nanostructures using SAXS. Here, we are synergistically using model-independent and model-dependent approaches to evaluate size and shape of reverse micelles/nanostructures.


Research Interest

  • Design of anisotropic, core-shell and self-assembled nanostructures with ideal and controllable morphology, size, and structure and improved performance for solving persistent issues related to energy and environment.
  • Oriented/ ordered assemblies of nanostructures are formed on solid substrates. The effect of orientation and ordering are studied on their opto-electronic properties and catalytic behavior.
  • Small Angle X-ray scattering is used to study the nucleation and growth of nanostructures. In this aspect, we are currently trying to understand the effect of various parameters that are involved in the formation of microemulsions on size and shape of microemulsions. 

Research Highlights

  • Dr. Sonalika Vaidya's group have synergistically used model-independent approach and model-dependent approach to evaluate size and shape of reverse micelles and gold nanostructures. More details can be found in J. Molecular Liquids, 2021, 326, 115302 and Part. Part. Syst. Charact., 2022, 2100285.
  • Ms. Aditi Vijay from Dr. Sonalika Vaidya's group have showcased the role of crystal structure (for a system containing same element but crystallizing in different structures) on HER/OER. She demonstrated this with two of her studies. In one, she has showcased this with three stable phases of Bi-Fe-O viz. BiFeO3 (perovskite structure), Bi2Fe4O9 (Mullite structure), and Bi25FeO40 (sillenite structure) on electrocatalytic OER. Here effect of electric polarization on the catalytic performance of the oxide was also evaluated. More details can be found in Electrochimica Acta, 2022, 407, 139887. In second, she has synthesized SrTiO(perovskite structure) and SrO-(SrTiO3)n (n=1 and 2; Ruddlesden-Popper based perovskite oxides) and studied their effect on photocatalytic HER. More details can be found in Material Advances, 2022, 3, 5055. 

  • Dr. Sonalika Vaidya's group is involved in understanding the formation of nanostructures using SAXS. Recently in this aspect, we have studied the effect of variation of co-surfactant on the growth of copper oxalates synthesized using microemulsions. More details of this research can be found in Phys.Chem.Chem.Phys., 2019, 21, 336.

  • Ms. Aditi Vijay  from Dr. Sonalika Vaidya's group have recently formed uniform assemblies of nanocubes of SrTiO3 on the glass substrate with the particles oriented along the (200) plane. The photocatalytic hydrogen evolution performance of SrTiO3 was shown to increase when the particles were oriented to form assemblies along (200) plane. More details can be found in ChemNanoMat 2022, e202200283.

PhD Students


    Email: anu.ph21214@inst.ac.in

    Reg. No.: PH21214

    Working Since Aug, 2021

    Email: shaswati.ph21243@inst.ac.in

    Reg. No.: PH21243

    Working Since Jan, 2022
  • MS. Ruchi verma

    Email: ruchi.ph20260@inst.ac.in

    Reg. No.: PH20260

    Working Since Jan, 2021

PhD Students

  • Ms. Aditi Vijay

    Email: aditi.ph16208@inst.ac.in

    Reg. No.: PH16208

Research Associates

  • Dr. Pragya Shukla

    Email: pragya31shukla@gmail.com

    Reg. No.: RA-01-202116

Project - JRF/SRF

  • S Shanmuga Priya

    Email: priyaahsubramani@gmail.com

    Reg. No.: RP641921

International Students

  • Mrs. Min Min Hitke

    Email: minnminnhtike.sbo@gmail.com

    Reg. No.: RTF-DCS fellow for NAM S&T

Project Associates

  • Zakiullah Zaidi

    Email: zakiullah.zaidi@gmail.com

    Reg. No.: INSTProject02

  • Vipul Shrivastava

    Email: vps.0793@gmail.com

    Reg. No.: RP08-

Post Doc Fellows

  • Dr. Manu Sharma

    Email: manu.atray@gmail.com

    Reg. No.: PDF 1503

  1. Effect of Oriented Assemblies of SrTiO3 with Exposed (200) plane on Photocatalytic Hydrogen Evolution: Aditi Vijay; Shanmuga Priya S; Umberto Terranova; Madhusudan Maity; Sonalika Vaidya, (2022) ChemNanoMat, -: e202200283. DOI: https://doi.org/10.1002/cnma.202200283

  2. Relating the structure, properties, and activities of nanostructured SrTiO3 and SrO–(SrTiO3)n (n = 1 and 2) for photocatalytic hydrogen evolution: Aditi Vijay, Kadambari Bairagi and Sonalika Vaidya, (2022) Materials Advances, -: -. DOI: DOI: 10.1039/d2ma00097k

  3. Synergistic Role of Model-Independent and Model- Dependent Approaches for Determining Size and Shape of Au Nanostructures Using SAXS: Aditi Vijay, Ashwinder Kaur, and Sonalika Vaidya, (2022) Particle and Particle Systems Characterization, -: 2100285. DOI: DOI: 10.1002/ppsc.202100285

  4. Role of crystal structure and electrical polarization of an electrocatalyst in enhancing oxygen evolution performance: Bi-Fe-O system as a case study: Aditi Vijay, K.V. Ramanujachary, Samuel E. Lofland, Sonalika Vaidya, (2022) Electrochimica Acta, 407: 139887. DOI: https://doi.org/10.1016/j.electacta.2022.139887

  5. Tuning the Morphology and Exposed Facets of SrTiO3 Nanostructures for Photocatalytic Dye Degradation and Hydrogen Evolution: Aditi Vijay,Sonalika Vaidya, (2021) ACS Applied Nano Materials, . DOI: 10.1021/acsanm.0c03160

  6. Designing Nanostructured Materials through Self-Assembly and their Applications: Hitasha Shahi,Jasveer Kaur,Sonalika Vaidya, (2021) Journal of The Institution of Engineers (India): Series C, . DOI: https://doi.org/10.1007/s40032-021-00660-4

  7. Small-angle X-ray scattering as an effective tool to understand the structure and rigidity of the reverse micelles with the variation of surfactant: Sunaina,Surinder K Mehta,Ashok K Ganguli,Sonalika Vaidya, (2021) Journal of Molecular Liquids, 326: 115302. DOI: 10.1016/j.molliq.2021.115302

  8. New synthetic methodology to enhance Mg doping in SnS2: structural characterization and photocatalytic activity: Jasveer Kaur,Sunaina,Zakiullah Zaidi,Sonalika Vaidya, (2020) Bull Mater Sci, 43: 298. DOI: https://doi.org/10.1007/s12034-020-02280-7

  9. Understanding the role of ionic flux on the polarity of the exposed surfaces of ZnO: Aditi Vijay, Aritra Mukhopadhyaya, Vipul Shrivastava, Devanshi Bhardwaj,Ashok K Ganguli,Md. Ehesan Ali,Sonalika Vaidya, (2020) Phys. Chem. Chem. Phys., 22: 15427-15436. DOI: 10.1039/D0CP02095H

  10. Synthesis and Structure of Anderson Cluster based Organic-Inorganic Hybrid Solid [{Cu(2-pzc)(H2O)2{H7AlMo6O24}].17H2O and its dye adso: Arti Joshi,Sonalika Vaidya,Monika Singh, (2019) Journal of Chemical Science, 131: 1. DOI: https://doi.org/10.1007/s12039-018-1583-4

  11. Understanding the role of co-surfactant in microemulsion on the growth of copper oxalate using SAXS: Sunaina,Vaishali Sethi,Surinder K Mehta,Ashok K Ganguli,Sonalika Vaidya, (2019) Phys. Chem. Chem. Phys., 21: 336. DOI: 10.1039/c8cp05622f

  12. Hollow ZnO from assembly of nanoparticles: photocatalytic and antibacterial activity,: Z Zaidi, K Vaghasiya, A Vijay, M Sharma, RK Verma,Sonalika Vaidya, (2018) Journal of Materials Science, 53 (21): 14964-14974. DOI: 10.1007/s10853-018-2715-4

  13. Enhanced photocatalytic activity of g-C3N4-TiO2 nanocomposites for degradation of Rhodamine B dye: Manu Sharma,Sonalika Vaidya,Ashok K Ganguli, (2017) Journal of Photochemistry and Photobiology A: Chemistry, 335: 287–293. DOI: 10.1016/j.jphotochem.2016.12.002

  14. Ternary alloy nanocatalysts for hydrogen evolution reaction,: Soumen Saha,Sonalika Vaidya,Kandalam V Ramanujachary,Samuel E Lofland,Ashok K Ganguli, (2016) Bull. Mater. Sci, 39: 433–436. DOI: 10.1039/C7CP06316D

  15. Nanocrystalline silica from termite mounds: Sandeep Dhaka, Arabinda Barua,Sonalika vaidya,Ashok K Ganguli, (2014) Current Science, 106: 83.

  16. Core-shell (CS) Nanostructures and their applications based on magnetic and optical properties: Sonalika Vaidya, Arik Kar, Amitava Patra, Ashok Kumar Ganguli, (2013) Nanoscience And Nanotechnology, 2: 106-126. DOI: 10.1166/rnn.2013.1027

  17. Efficient entrapment of dye in hollow silica nanoparticles:direct evidence using fluorescence spectroscopy: Arabinda Barua,Sandeep Dhaka,Sonalika Vaidya,Ashok K Ganguli, (2013) J. Fluorescence, 23: 1287-1292. DOI: 10.1007/s10895-013-1262-2

  18. Optical Properties of Ag@TiO2 and CdS@TiO2 core-shell nanostructures,: Sonalika Vaidya,Amitava patra,Ashok K Ganguli, (2012) Science of Advanced Materials, 4: 631–636. DOI: 10.1166/sam.2012.1330

  19. Enhanced functionalization of Mn2O3@SiO2 core-shell nanostructures: Sonalika Vaidya,Pallavi Thapliyal,Ashok K Ganguli, (2011) Nanoscale Res. Lett., 6: 169-174. DOI: 10.1186/1556-276X-6-169

  20. Synthesis of core-shell nanostructures of Co3O4@SiO2 with controlled shell thickness (5-20 nm) and hollow shells of silica: Sonalika Vaidya,Pallavi Thapliyal,K V Ramanujachary,S E Lofland,Ashok K Ganguli, (2011) J. Nanosci. Nanotech, 11: 3405-3413. DOI: 10.1166/jnn.2011.3612

  21. Uptake of hydrophilic toxins in hollow silica shells obtained from core-shell nanostructures: Sonalika Vaidya,Pallavi Thapliyal,Ashok K Ganguli, (2011) Proc. Indian Natnl. Sci. Acad., 77: 99-103.

  22. CdS@TiO2 and ZnS@TiO2 core-shell nanocomposites: Synthesis and Optical Properties,: Sonalika Vaidya,Amitava Patra,Ashok K Ganguli, (2010) Colloids and Surfaces A: Physicochem. Eng. Aspects,, 363: 130–134. DOI: 10.1016/j.colsurfa.2010.04.030

  23. New Catanionic surfactants, phase stability and synthesis of ultrafine CdS nanoparticles: Rachna Khurana,Sonalika Vaidya,M. Manolata Devi,Ashok K Ganguli, (2010) J. Colloid Interface Sci,, 352: 470–475. DOI: 10.1016/j.jcis.2010.09.013

  24. Microemulsion – based synthesis of nanocrystalline materials: Ashok K. Ganguli, Aparna Ganguly,Sonalika Vaidya, (2010) Chem. Soc. Rev, 39: 474–485. DOI: 10.1039/B814613F

  25. Synthesis of homogeneous NiO@SiO2 core-shell nanostructures and the effect of shell thickness on the magnetic properties: Sonalika Vaidya, K V ramanujachary, S E Lofland,Ashok K Ganguli, (2009) Cryst. Growth Des, 9 (4): 1666-1670. DOI: 10.1021/cg800881p

  26. Controlling the size, morphology and aspect ratio of nanostructures using reverse micelles: A case study of copper oxalate monohydrate: Rajeev Ranjan,Sonalika Vaidya,Pallavi Thapliyal,M. Qamar,Jahangeer Ahmed,Ashok K Ganguli, (2009) Langmuir, 25(11): 6469–6475. DOI: 10.1021/la900063q

  27. Nanospheres, nanocubes and nanorods of nickel oxalate: Control of shape and size by surfactant and solvent: Sonalika Vaidya,Pankaj Rastogi,Suman Agarwal,Santosh K Gupta,Tokeer Ahmad,Anthony M Antonelli Jr.,K V Ramanujachary,S E Lofland,Ashok K Ganguli, (2008) J. Phys. Chem. C, 112: 12610–12615. DOI: 10.1021/jp803575h

  28. Tin dioxide nanoparticles: Reverse micellar synthesis and gas sensing properties: Jahangeer Ahmed,Sonalika Vaidya,Tokeer Ahmad,P. Sujatha Devi,Dipankar Das,Ashok K Ganguli, (2008) Mater. Res. Bull., 43: 264–271. DOI: 10.1016/j.materresbull.2007.03.013

  29. Microemulsion route to the synthesis of nanoparticles: Ashok K. Ganguli, Tokeer Ahmad,Sonalika Vaidya,Jahangeer Ahmed, (2008) Pure App. Chem., 80: 2451-2477. DOI: 10.1351/pac200880112451

  30. Nanocrystalline Oxalate/Carbonate Precursors of Ce and Zr and Their Decompositions to CeO2 and ZrO2 Nanoparticles: Sonalika Vaidya,Tokeer Ahmad,Suman Agarwal,Ashok K Ganguli, (2007) J. Am. Ceram. Soc., 90: 863–869. DOI: 10.1111/j.1551-2916.2007.01484.x

  31. Mimicking the Biomineralization of Aragonite (Calcium Carbonate) Using Reverse-Micelles under Ambient Conditions: Ashok K. Ganguli, Jahangeer Ahmed,Sonalika Vaidya,Tokeer Ahmad, (2007) J. Nanosci. Nanotech, 7: 1760-1767. DOI: 10.1166/jnn.2007.711

  32. Optimizing the hydrodynamic radii and polydispersity of reverse micelles in the Triton X-100/water/cyclohexane system using dynamic light scattering and other studies: Poonam Kaushik,Sonalika vaidya, Tokeer Ahmad,Ashok K Ganguli, (2007) Colloids and Surfaces A: Physicochem. Eng. Aspects, 293: 162–166. DOI: 10.1016/j.colsurfa.2006.07.024

  33. Zinc oxalate nanorods: a convenient precursor to uniform nanoparticles of ZnO: Tokeer Ahmad,Sonalika Vaidya,Niladri sarkar,Subhasis Ghosh,Ashok K Ganguli, (2006) Nanotechnology, 17: 1236–1240. DOI: 10.1088/0957-4484/17/5/012

  1. Nanostrucured Materials using Microemulsions: Sonalika Vaidya, (2021) Chemical Methods for Processing Nanomaterials, CRC Press., .

  2. Microemulsion methods for synthesis of nanostructured materials: Sonalika Vaidya,Asho K Ganguli, (2019) Comprehensive Nanoscience and Nanotechnology, Second Edition, Publisher: Elsevier, 2: 1. DOI: 10.1016/B978-0-12-803581-8.11321-9

  3. Core-shell nanostructures: A mini review: Sonalika Vaidya, (2013) 109-125.

  4. Numerical Problems in Chemistry: R R Misra, Neeti Misra,Sonalika Vaidya, (2011) .


  • Oriented assemblies of ferroelectric nanostructures with enhanced polarization for photocatalytic water splitting Three Years, CSIR
    Funding Amount: 16 Lakhs (completed)
    PI: Dr. Sonalika Vaidya
  • Ultra-fast effective treatment of Water contaminants using semiconducting nanomaterials Two Years, INST
    Funding Amount: 10 Lakhs (completed)
    PI: Dr. Sonalika Vaidya Co-PI: Dr. Monika Singh
  • Biological treatment of engineered nanomaterials-contaminated wastewater-feasibility and implication Two Years, INST
    Funding Amount: 10 Lakhs (completed)
    PI: Dr. Sonalika Vaidya Co-PI: Dr. Sharmistha Sinha
  • Self-assembled nanostructures for Photocatalysis Three Years, DST
    Funding Amount: 25 Lakhs (completed)
    PI: Dr. Sonalika Vaidya

  • 2010


    Department of Chemistry, IIT Delhi

  • 2004


    Department of Chemistry, IIT Delhi

  • 2002


    Hindu College, University of Delhi

  • Scientist D (Assistant Professor):Institute of Nano Science and Technology, Mohali, Punjab (January 2019 to Present till date )

  • Scientist C:Institute of Nano Science and Technology, Mohali, Punjab (May 2014 to December 2018 )

  • Assistant Professor:Department of Chemistry, Hindu College, University of Delhi (November 2010 to May 2014 )

  • CSIR SRF:Ext. Department of Chemistry, IIT Delhi (April 2010 to November 2010 )

  • Project Associate:Department of mechanical Engineering and Department of Chemistry, IIT Delhi (August 2009 to March 2010 )

Awards & Honours

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Professional Recognitions

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