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1,895 results on '"Gayathri, R"'

108. Design of Reliable Dense Wavelength Division Multiplexing System for Metropolitan Area Network

Author

Sheela Sobana Rani, K., Gayathri, R., Lavanya, R., Uthayasuriyan, K., Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Smys, S., editor, Bestak, Robert, editor, and Rocha, Álvaro, editor

Published
2020
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124. A generic approach for aligning liquid crystals using solution-processed 2D materials on ITO-free surfaces.

Author

Pisharody, Gayathri R., Sahoo, Priyabrata, Mishra, Abhishek Kumar, Rao, D. S. Shankar, Matte, H. S. S. Ramakrishna, and Prasad, S. Krishna

Abstract

Conducting and alignment layers are critical for industrial scale manufacture of quality liquid crystal (LC) devices. To date, the conventional approaches utilize ITO-based electrodes as the conducting layer and rubbed polyimide as the aligning layer. However, usage of ITO has issues like scarcity of indium reserves, high cost, and toxicity, whereas employing rubbed polyimide demands high-temperature baking and mechanical rubbing that causes debris generation and electrostatic charges. Although offering a new outlook, CVD-based 2D materials provided a non-traditional route for fabricating the alignment layers. Furthermore, the previous studies are restricted to ITO-based conducting substrates and also calamitic molecules. However, from the utility point of view, the uniform alignment realized over only small areas necessitates alternative approaches to fabricate interfacial layers on non-ITO-based substrates utilizing solution-processed routes and deploying non-calamitic LCs also. Here, a generalized approach is presented to address the above-mentioned issues by considering an aluminium-doped zinc oxide (AZO) conducting layer and a hexagonal boron nitride (h-BN) alignment layer deposited via the electrophoretic deposition technique. Upon fabrication of LC devices using h-BN/AZO, large-area (>3 cm2) unidirectional alignment of LC molecules is observed. The method works equally effectively for bent-core molecules also. The alignment quality is established by azimuthal angle dependence of transmission and birefringence intensity analysis. Several critical parameters were found to be comparable between h-BN/AZO and PI/ITO devices; like operating voltage (∼1 V), switching response (in ms), image retention aspect, and ionic parameters (e.g., ionic concentration on the order of 1019 m−3). This study underscores the potential of h-BN/AZO as a promising candidate for display technologies. [ABSTRACT FROM AUTHOR]

Published
2024
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127. Prefix Tree Based MapReduce Approach for Mining Frequent Subgraphs

Author

Movva, Supriya, Prata, Saketh, Sampath, Sai, Gayathri, R. G., Akan, Ozgur, Editorial Board Member, Bellavista, Paolo, Editorial Board Member, Cao, Jiannong, Editorial Board Member, Coulson, Geoffrey, Editorial Board Member, Dressler, Falko, Editorial Board Member, Ferrari, Domenico, Editorial Board Member, Gerla, Mario, Editorial Board Member, Kobayashi, Hisashi, Editorial Board Member, Palazzo, Sergio, Editorial Board Member, Sahni, Sartaj, Editorial Board Member, Shen, Xuemin (Sherman), Editorial Board Member, Stan, Mircea, Editorial Board Member, Xiaohua, Jia, Editorial Board Member, Zomaya, Albert Y., Editorial Board Member, Kumar, Navin, editor, and Venkatesha Prasad, R., editor

Published
2019
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129. Spatial and Temporal Variability of Some Coastal Water Parameters at Selected Locations on the East Coast of India

Author

Gayathri, R., Ranga Rao, V., Madeswaran, P., Padmavathi, V., ManjuPriya, R., Arunvel, M., Kishore Baabu, S. R., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Solari, Giovanni, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Murali, K., editor, Sriram, V., editor, Samad, Abdus, editor, and Saha, Nilanjan, editor

Published
2019
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149. Comment on 'Interpretation of the Lempel-Ziv Complexity Measure in the context of Biomedical Signal Analysis'

Author

Balasubramanian, Karthi, Prabhu, Gayathri R, and Nagaraj, Nithin

Subjects
Nonlinear Sciences - Chaotic Dynamics, Physics - Data Analysis, Statistics and Probability
Abstract

In this Communication, we express our reservations on some aspects of the interpretation of the Lempel-Ziv Complexity measure (LZ) by Mateo et al. in "Interpretation of the Lempel-Ziv complexity measure in the context of biomedical signal analysis," IEEE Trans. Biomed. Eng., vol. 53, no. 11, pp. 2282-2288, Nov. 2006. In particular, we comment on the dependence of the LZ complexity measure on number of harmonics, frequency content and amplitude modulation. We disagree with the following statements made by Mateo et al. 1. "LZ is not sensitive to the number of harmonics in periodic signals." 2. "LZ increases as the frequency of a sinusoid increases." 3. "Amplitude modulation of a signal doesnot result in an increase in LZ." We show the dependence of LZ complexity measure on harmonics and amplitude modulation by using a modified version of the synthetic signal that has been used in the original paper. Also, the second statement is a generic statement which is not entirely true. This is true only in the low frequency regime and definitely not true in moderate and high frequency regimes., Comment: Submitted for review to IEEE Transactions on Biomedical Engineering

Published
2013

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