Author
R.Ravi Kumar Reddy
Bio: R.Ravi Kumar Reddy is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Potentiometric sensor & Crystalline silicon. The author has an hindex of 2, co-authored 2 publications receiving 142 citations.
Papers
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TL;DR: Enzyme solution-oxidized porous silicon-crystalline silicon structure was used to detect changes in pH during the hydrolysis of tributyrin as a shift in the capacitance-voltage (C-V) characteristics.
102 citations
TL;DR: In this paper, an enzymatic, porous silicon (PS) based potentiometric method for estimating triglycerides is reported, where Lipase, an enzyme which hydrolyses triglycerides was immobilised on PS which was prepared from p-type (1 − 0 − 0) crystalline silicon and was thermally oxidized.
42 citations
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TL;DR: This work reviews the status of the various nanostructure-based biosensors and use of the self-assembly techniques and nano-electromechanical systems (NEMS) in bios Sensors is discussed.
506 citations
TL;DR: The use of porous silicon (PSi) as a sensor for detection of various analytes is reviewed in this article, where the authors provide a critical assessment of the development of PSi as a promising material for chemical and biosensing applications.
Abstract: The use of porous silicon (PSi) as a sensor for detection of various analytes is reviewed. The optical or electrical properties of PSi are key sensing parameters that have been used in many chemical and biological sensing applications. PSi is a promising candidate due to ease of fabrication, large surface area, various accessible pore sizes and morphologies, controllable surface modification and its compatibility with conventional silicon processing technology. The adsorption of chemical or biological molecules into the pores modifies the electrical and/or optical properties, allowing convenient and sensitive measurement approach. In this review, we provide a critical assessment of the development of PSi as a promising material for chemical and biosensing applications. Formation procedures of PSi with various pore sizes and morphologies are firstly given. Surface properties and structural characteristics of the material are briefly described. The recent progress on utilization of such porous structures in chemical and biosensing applications is then addressed in the context of surface chemistry effects and nanostructures, measuring approaches, operating concepts and device sensitivity and stability. Finally, concluding remarks with existing challenges that hinder the material for commercial use are highlighted.
250 citations
TL;DR: This paper gives a brief survey on biologically sensitive FEDs (field-effect devices) and introduces some recent approaches in this field.
Abstract: This paper gives a brief survey on biologically sensitive FEDs (field-effect devices) and introduces some recent approaches in this field. Basic concepts, functional principles and current trends in research and development for namely, ISFETs (ion-sensitive field-effect transistors), capacitive EIS (electrolyte-insulator-semiconductor) sensors and LAPS (light-addressable potentiometric sensor) structures will be presented.
217 citations
TL;DR: The present review describes the fabrication of nano-porous silicon and its biosensing capabilities for detection of various analytes including, but not limited to, glucose, DNA, antibodies, bacteria and viruses.
163 citations
TL;DR: The potential of different porous silicon photonic crystals for biosensing in the context of its surface chemistry and nanostructure is discussed, both of which need to be optimized to obtain sensitive and stable devices.
155 citations