Sankar Ganesh Ramaraj

ORCID: 0000-0002-6837-9112
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About
Contact & Profiles
Research Areas
  • Gas Sensing Nanomaterials and Sensors
  • Analytical Chemistry and Sensors
  • Conducting polymers and applications
  • Advanced Photocatalysis Techniques
  • Multicomponent Synthesis of Heterocycles
  • Advanced Chemical Sensor Technologies
  • TiO2 Photocatalysis and Solar Cells
  • Acoustic Wave Resonator Technologies
  • Graphene research and applications
  • Advanced biosensing and bioanalysis techniques
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Electrochemical sensors and biosensors
  • Advanced Nanomaterials in Catalysis
  • Solid-state spectroscopy and crystallography
  • Synthesis and Biological Evaluation
  • Advanced Sensor and Energy Harvesting Materials
  • Plasmonic and Surface Plasmon Research
  • Synthesis and biological activity
  • ZnO doping and properties
  • Perovskite Materials and Applications
  • Ga2O3 and related materials
  • Thermal properties of materials
  • Photonic and Optical Devices
  • Sulfur-Based Synthesis Techniques
  • Advanced Fiber Optic Sensors

Saveetha University
2022-2025

The University of Tokyo
2022-2025

Yan'an University
2023-2024

Japan Advanced Institute of Science and Technology
2020-2022

SRM Institute of Science and Technology
2017-2020

SRM University
2017

Shizuoka University
2017

Abstract Semiconducting materials are pivotal in various fields, such as solar cells, LEDs, photovoltaic etc. A nature‐friendly chitosan is a good film‐forming, water‐soluble polymer that modified to small band‐gap for optoelectronic applications. Choline chloride:ethylene glycol:glycerin (1:1:1) deep eutectic solvent (DES)‐modified activated carbon incorporated into the matric and this composite fabricated thin films via spin coating methodology. The obtained subjected multiple studies...

10.1002/pat.6470 article EN cc-by Polymers for Advanced Technologies 2024-06-01

High sensitivity : achieves a maximum wavelength of 143 000 nm per RIU, making it highly effective for detecting small refractive index changes in analytes.

10.1039/d4na00812j article EN Nanoscale Advances 2024-12-17

Doping plays a significant role in affecting the physical and chemical properties of two-dimensional (2D) dichalcogenide materials. Controllable doping is one major factors modification electronic mechanical 2D MoS2 materials have gained attention gas sensing owing to their high surface-to-volume ratio. However, low response recovery time hinder application practical sensors. Herein, we report enhanced Nb-doped sensor synthesized through vapor deposition (PVD) toward NO2 at different...

10.1021/acsomega.1c07274 article EN cc-by-nc-nd ACS Omega 2022-03-15

Abstract Reactant solubility, which dictates achievable concentrations, and the stability of reaction intermediates (excited states), solvents modulate potential energy landscape influence rates. Consequently, solvent selection is pivotal in optimizing process productivity, economic feasibility, environmental footprint. At present, organic synthesis pivots around idea sustainability. In particular, PEG‐400, a popular phase transfer catalyst, considered greener as it can be reused several...

10.1002/pat.6433 article EN cc-by Polymers for Advanced Technologies 2024-05-29

Morphology plays a vital role in dye-sensitized solar cells (DSSCs) due to their high surface area, dye adsorption and electron transport. In this study, we have designed fabricated titanate nanotube photoanodes by simple one-step hydrothermal method. High-resolution transmission microscope (HRTEM) analysis revealed the transformation of nanoparticles morphology. Brauner-Emmett-Teller (BET) method showed enhanced area pore diameter nanotubes. TiO2 photoanode excellent energy conversion...

10.1016/j.matlet.2024.136981 article EN cc-by-nc-nd Materials Letters 2024-07-11

Spin waves (SWs), an ultra-low power magnetic excitation in ferro or antiferromagnetic media, have tremendous potential as transport less data carriers for post-CMOS technology using their wave interference properties. The concept of magnon originates from optical interference, resulting a historical taboo maintaining identical wavevector interference-based devices. This makes the attainment on-chip design reconfigurability challenging owing to difficulty phase tuning via external fields....

10.1038/s41598-023-31607-7 article EN cc-by Scientific Reports 2023-03-24

Abstract This study investigates the synthesis, analysis, and utility of films comprising deep eutectic solvent (DES) grafted activated charcoal (AC) within a polyvinyl alcohol (PVA) matrix for optoelectronic device applications. The fabrication process involves dispersion DES functionalization AC into PVA solution, followed by casting onto substrates with controlled drying. Comprehensive characterization encompassing X‐ray diffraction (XRD), scanning electron microscopy (SEM), UV–vis...

10.1002/pat.6422 article EN cc-by Polymers for Advanced Technologies 2024-05-01

Addressing the degradation of persistent organic pollutants like Bisphenol A (BPA) and Rhodamine B (RhB) with a photocatalyst that is both cost-effective environmentally friendly notable challenge. This...

10.1039/d4im00105b article EN cc-by Industrial Chemistry and Materials 2024-01-01

Detection of parts-per-trillion (ppt)-level acetone gas molecules at room temperature using suspended graphene on SiO2 micropillars has rarely been achieved solid-state devices or surface acoustic wave (SAW) sensors. This paper presents the effect and as a guiding sensing layer to detect gas. The integration with introduces coupled resonance arising from interaction between mechanical vibrations micropillars. leads formation hybrid modes when natural frequencies align. coupling mechanism...

10.1021/acssensors.4c02344 article EN ACS Sensors 2025-02-13

Substitutional doping and different nanostructures of ZnO have rendered it an effective sensor for the detection volatile organic compounds in real-time atmosphere. However, low selectivity sensors limits their applications. Herein, hafnium (Hf)-doped (Hf-ZnO) are developed by hydrothermal method high hazardous NOX gas atmosphere, substantially portraying role concentration on enhancement structural, optical, sensing behavior. microspheres with 5% Hf showed excellent detected 22 parts per...

10.1021/acs.iecr.2c00890 article EN cc-by Industrial & Engineering Chemistry Research 2022-04-22

To improve the quality of modern life in current society, low-power, highly sensitive, and reliable healthcare technology is necessary to monitor human health real-time. In this study, we fabricated partially suspended monolayer graphene surface acoustic wave gas sensors (G-SAWs) with a love-mode effectively detect ppt-level acetone molecules at room temperature. The sputtered SiO2 thin film on black 36°YX-LiTaO3 (B-LT) substrate acted as guiding layer, reducing noise insertion loss. G-SAWs...

10.1039/d3na00914a article EN cc-by Nanoscale Advances 2023-01-01
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