Ramasamy Perumal

Sri Sivasubramaniya Nadar College of Engineering

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Maduraimuthu Djanaguiraman

Tamil Nadu Agricultural University

P. V. Vara Prasad

Kansas State University

Sivasubramani Vediyappan

Xinjiang Technical Institute of Physics & Chemistry

Ignacio A. Ciampitti

Kansas State University

V. Prasad

Christopher R. Little

Kansas State University

Muthu Senthil Pandian

Sri Sivasubramaniya Nadar College of Engineering

I. Ciampitti

Tesfaye Tesso

Kansas State University

Kirubaveni Savarimuthu

Anna University, Chennai

Cooperative Institutions

Sri Sivasubramaniya Nadar College of Engineering

Kansas State University

Tamil Nadu Agricultural University

Sri Ramachandra Institute of Higher Education and Research

Anna University, Chennai

Amrita Vishwa Vidyapeetham

West Virginia State University

Universidad Autónoma de Coahuila

Virginia State University

West Virginia University

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Crystal growth and characterization of semi-organic 2-amino-5-nitropyridinium bromide (2A5NPBr) single crystals for third-order nonlinear optical (NLO) applications

Applied Physics A (2017)

Sivasubramani Vediyappan Arumugam Raja Karuppasamy Pichan Ramachandran Kasthuri Muthu Senthil Pandian

Crystal (programming language)

Photoconductivity

Etch pit density

10.1007/s00339-017-1394-3

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Citations (48)

Chemical Texturing Used to Reduce The Reflectance of the Multi-Crystalline Silicon Wafer For Improving Optical Properties and Solar Cell Efficiency

Research Square (Research Square) (2021)

Madhesh Raji Kesavan Venkatachalam Srinivasan Manikkam Ramasamy Perumal

Abstract The aim of this work is to improve the optical properties in the multi-crystalline silicon (mc-Si) by acid texturization. Generally, HF and HNO 3 are using the mc-Si wafer acid texturization process and it is toxic chemical acids. In this work, H 2 O 2 is used instead of HNO 3 because of H 2 O 2 less toxic chemical compared to HNO 3 . In this work, we have used the different types of chemical acids in different ratios for etching. Here, we have used HF: H 2 O 2 : CH 3 COOH=3:2:2, HF: H 2 O 2 : KMnO 4 =3:2:0.2 M and HF: H 2 O 2 : HNO 3 : KMnO 4 =3:2:2:0.2M for etching with the etching time of 60 sec. The HF: H 2 O 2 : KMnO 4 =3:2:0.2M gives the better results as obtained from optical microscope, UV- Visible reflectance studies and X-ray diffraction (XRD) studies. The etched mc-Silicon wafer surface was analyzed by the optical microscope and Scanning Electron Microscope (SEM). The FTIR results indicate the reduction of oxidation in the etched samples. Moreover, the HF: H 2 O 2 : KMnO 4 =3:2:0.2M textured wafers have the advantages of lower reflectance and increased etching of the mc-Silicon wafer.

Isotropic etching

10.21203/rs.3.rs-934808/v1

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Impact of Drought and High‐temperature Stresses on Growth and Development Stages, Physiological, Reproductive, and Yield Traits on Pearl Millet

Agronomy monograph/Agronomy (2024)

Maduraimuthu Djanaguiraman A. S. Priyanka Sivaprakasam Jidhu Vaishnavi Ramasamy Perumal Ignacio A. Ciampitti

10.1002/9780891184034.ch9

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Citations (1)

The Biology and Control of Sorghum Diseases

Agronomy monograph/Agronomy (2018)

Christopher R. Little Ramasamy Perumal I. Ciampitti V. Prasad

10.2134/agronmonogr58.2015.0073

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Citations (1)

Sesamum

Springer eBooks (2010)

Padma Nimmakayala Ramasamy Perumal M. Sujatha Umesh K. Reddy

10.1007/978-3-642-14871-2_16

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Citations (22)

Experimental Study on Flexible ZnO Based Nanogenerator Using Schottky Contact for Energy Harvesting Applications

IEEE Transactions on Nanotechnology (2017)

Kirubaveni Savarimuthu Govindaraj Rajamanickam Radha Shankararajan Ramasamy Perumal Arokiyadoss Rayarfrancis

This paper presents the synthesis and implementation of a metal-insulator-semiconductor-type energy harvester. The proposed harvester generates power from ambient vibration. The flexible nanogenerator (NG) is developed from well- aligned ZnO nanorods (NRs) on kapton substrate with ITO sputtered bottom contact using the low-temperature hydrothermal method. PMMA insulation region is coated over NRs with silver (Ag) as top electrode to reduce the external screening effect thereby improving the output signal strength. The crystalline and morphological properties of the NRs are studied using X-ray diffraction, field emission scanning electron microscopy analysis, Fourier transform infrared spectroscopy, and photoluminescence.The current-voltage characteristics of the ZnO NRs exhibited a clear rectifying behavior, attributed to the formation of a Schottky contact between ZnO and Ag contact with an insulation of PMMA layer. An experimental study to evaluate the device performance is carried out using tip excitation method. The synthesized NG generates open-circuit voltage of 400 mV, circuit current across optimum load of 10 kΩ is 30 μA, and giving a maximum power density of 9 μ Wcm ^-2 at a force of 0.5 N at 12 Hz. Furthermore, the impedance analysis is performed for estimating the relationship between screening effects and RC time constant (T RC).

Nanogenerator

Kapton

Nanorod

10.1109/tnano.2017.2688337

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Citations (25)

Crystal growth and characterization of an efficient semi-organic nonlinear optical (NLO) donor-π-acceptor single crystal: 2-amino-5-nitropyridinium nitrate (2A5NPN) grown by slow evaporation solution technique (SEST)

Journal of Materials Science Materials in Electronics (2017)

Sivasubramani Vediyappan M. Vijayan Muthu Senthil Pandian Ramasamy Perumal Martin Britto Dhas Sathyadhass Ambalapushpam

Crystal (programming language)

Hyperpolarizability

Photoconductivity