Durga Gajula
YOU?
Author Swipe
View article: Effective and Sustainable Surface Microbial Control using Electric field treatment for Global Hygiene and Industrial Anti-biofouling
Effective and Sustainable Surface Microbial Control using Electric field treatment for Global Hygiene and Industrial Anti-biofouling Open
Surface microbial contamination presents enormous challenges to global hygiene and brings industries financial burdens. In this study, a novel electrophysical microbial control surface on the basis of electric field treatment with microsca…
Experimental demonstration of plasmon–plasmon scattering paves the way for electromagnetic wave-based digital logic concept Open
We report the experimental demonstration of plasmon–plasmon scattering at room temperature in the inversion layer of a patterned metal–oxide–semiconductor structure. This fundamental result paves the way for the development of plasmon–plas…
Low-Power AlGaN/GaN Triangular Microcantilever for Air Flow Detection Open
This paper investigates an AlGaN/GaN triangular microcantilever with a heated apex for airflow detection utilizing a very simple two-terminal sensor configuration. Thermal microscope images were used to verify that the apex region of the m…
Sub-bandgap photon-assisted electron trapping and detrapping in AlGaN/GaN heterostructure field-effect transistors Open
We have investigated photon-assisted trapping and detrapping of electrons injected from the gate under negative bias in a heterostructure field-effect transistor (HFET). The electron injection rate from the gate was found to be dramaticall…
View article: Indium Tin Oxide (ITO) based Ohmic Contacts on Bulk n-GaN Substrate
Indium Tin Oxide (ITO) based Ohmic Contacts on Bulk n-GaN Substrate Open
A transparent indium tin oxide (ITO) contact to bulk n-GaN and n-GaN thin film on c-face sapphire with a specific contact resistivity of 8.06 × 10 −4 Ω.cm 2 and 3.71 × 10 −4 Ω.cm 2 was measured, respectively. Our studies relied on an RF sp…
Effect of Strain on Properties of Metal Doped VO2 Based Thermal Sensors on Muscovite Substrate Open
In this work, VO2 based thermal sensing thin film synthesized on flexible muscovite substrates by direct oxidation of deposited vanadium metal, were investigated for the impact of doping and strain on their electrical properties. We invest…
PIEZORESISTIVE MICRO-PILLAR SENSOR FOR IN-PLANE FORCE SENSING FOR BIOLOGICAL APPLICATIONS Open
This work presents the design, fabrication, and testing of a pillar-based microforce sensor for in-plane force sensing.The novelty of the sensor lies in its design that combines a high aspect ratio SU-8 pillar with 6µm diameter, fabricated…
Infrared Transmission Characteristics of Phase Transitioning VO2 on Various Substrates Open
Infrared transmission characteristics of VO2 thin films synthesized on multiple substrates, using a low-pressure direct oxidation technique, have been characterized. Material characterization of these films indicates high material quality,…
Mechanical memory operations in piezotransistive GaN microcantilevers using Au nanoparticle-enhanced photoacoustic excitation Open
Nonlinear oscillations in micro- and nanoelectromechanical systems have emerged as an exciting research area in recent years due to their promise in realizing low-power, scalable, and reconfigurable mechanical memory and logic devices. Her…
Voltage triggered near-infrared light modulation using VO<sub>2</sub> thin film Open
Development of compact and fast modulators of infrared light has garnered strong research interests in recent years due to their potential applications in communication, imaging, and sensing. In this study, electric field induced fast modu…
Investigation of AlGaN/GaN HFET and VO2 Thin Film Based Deflection Transducers Embedded in GaN Microcantilevers Open
The static and dynamic deflection transducing performances of piezotransistive AlGaN/GaN heterojunction field effect transistors (HFET) and piezoresistive VO2 thin films, fabricated on GaN microcantilevers of similar dimensions, were inves…
Photoacoustic Detection of H2 and NH3 Using Plasmonic Signal Enhancement in GaN Microcantilevers Open
Photoacoustic (PA) detection of H2 and NH3 using plasmonic excitation in Pt- and Pd-decorated GaN piezotransistive microcantilevers were investigated using pulsed 520-nm laser illumination. The sensing performances of 1-nm Pt and Pd nanopa…
The Analysis of Dissolved Inorganic Carbon in Liquid Using a Microfluidic Conductivity Sensor with Membrane Separation of CO2 Open
Microfluidic lab on chip for measuring dissolved inorganic carbon with application to ocean chemical analysis and depth profiles. Miniaturised system using membrane separation of CO2 and concentration determination by conductivity for cons…
The Analysis of Dissolved Inorganic Carbon in Liquid Using a Microfluidic Conductivity Sensor with Membrane Separation of CO2 Open
Microfluidic lab on chip for measuring dissolved inorganic carbon with application to ocean chemical analysis and depth profiles. Miniaturised system using membrane separation of CO2 and concentration determination by conductivity for cons…
High Temperature AlGaN/GaN Membrane Based Pressure Sensors Open
A highly sensitive Gallium Nitride (GaN) diaphragm based micro-scale pressure sensor with an AlGaN/GaN heterostructure field effect transistor (HFET) deflection transducer has been designed and fabricated for high temperature applications.…