Gupta’s Advanced Functional ‘Hybrid’ nanoMaterials  and Device Group

(Frontier Carbons: Graphene & its’ Variants, CNanotubes, Dispersed Nanodiamond) and Nanocomposites

Welcome to our Webpage! The group is headed by Prof. Sanju Gupta.

Research Overview

We are an experimental condensed-matter materials physics and briefly, experimental biophysics group with leading activities on multifunctional and hybrid nanomaterials and nancomposites comprising frontier carbons, conducting polymers and transition metal oxides motivated by the demand for improved or entirely new functional materials for a range of potential & emerging technologies including electrochemical energy storage devices and nano-bio interfaces. Graphene, the 2D system notoriously hard-to-handle nanomaterial that could turn out to be the material of the new millennium, holds great promise to the point where the material itself and their derivatives could, in the future, help to drive down the economy of electrochemical energy storage devices as potential electrochemical electrodes for super-/ultracapacitors and battery anodes, among others. Our current research involves synthesis, processing, characterization, and applications specifically taregting alternative clean energy devices and nano-bio interactions. We investigate the dynamical electrochemical processes at the solid/liquid interface by inelastic light scattering (resonance Raman scattering) to probe their surface/interfacial charge transfer dynamics and to gain an insight into the associated structural changes as well as fine tuning the energy bandgap and continue to explore other characterization tools such as scanning electrochemical microscopy at micro- and nanoscale. A major focus of our research would be on improving the performance of electrochemical electrodes by design and synthesis of novel strategies for advanced graphene-based hybrid systems and development of alternative advanced characterizations. We are also studying carbon nanotubes, in their combination with graphene-based materials forming three-dimensional hybrid networks and ultra dispersed nanodiamond as novel multifunctional materials and their radiation resilience. In regard to polymers (polypyrrole and polyaniline), the works include electrochemical synthesis of nanostructures (nanofibers and nanocontainers) at molecular level via anodic oxidation (p-doping) and characterization, all relevant to forming nanocomposites with graphene and derivatives such as graphene oxide, reduced graphene oxide and carbon nanotubes. Raman spectroscopy and Raman mapping of van der Waals (vdW) solids built from 2D layers of transition metal dichalcogenides (TMDs; MoS2, MoSe2, WS2, WSe2), h-BN is studied with a viewpoint of forming heterostructures and superlattices with graphene to develop new electronic devices (and photovoltaics targeting their photophysical properties). Our research involves science and engineering aspects of many novel advanced low-dimensional carbons and analogues. To achieve above mentioned goals, we use a range of analytical characterization techniques (SEM (EDS), XRD, RS (mapping), UV-Vis, IR, AFM, HRTEM (SAED), I-V (RT), and Electrochemical), either in-house or through collaborations, to probe their surface as well as average bulk structure and property in order to establish microscopic structure-processing-property-function correlations. When it seems appropriate, I plan to participate in technology transition to benefit society, such as through intellectual property and possibly formation of a LLC.

Research Targets
graphene(s) and variants (GO and rGO)                                                                                                                                                                                                                          

graphene-based nanomaterials - synthetic approaches

- electrochemical electrode materials for super (ultra)capacitors and battery anodes as alternative energy storage devices and probing dynamic electrochemical processes                                                                                                                                                                                           

- conducting polymer nanostructures and nanocomposites with Cnanotubes

materials physics and chemistry of C-based systems

hybrids and nanocomposites     

nano-bio interaction / interfaces / electron transfer kinetics

Currently advising (Graduate, Undergraduate and Gatton Academy high school students)Seeking enthusiastic & highly motivated students at all level

Mayme Van Meveren (Graduate MS, DHS), Eli Heintzman (UG, 3rd Yr.), Carson Price (UG, Freshman),

Harry Heyworth (Gatton Academy Sr.), Aline Irihamye (Gatton Academy Sr.)

For more details, please see our research page.    - UNDER CONSTRUCTION!