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Bhawna Tiwari
Researcher at Indraprastha Institute of Information Technology
Publications - 18
Citations - 88
Bhawna Tiwari is an academic researcher from Indraprastha Institute of Information Technology. The author has contributed to research in topics: Ring oscillator & Transistor. The author has an hindex of 5, co-authored 15 publications receiving 52 citations.
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Journal ArticleDOI
Oxide TFT Rectifiers on Flexible Substrates Operating at NFC Frequency Range
Bhawna Tiwari,Pydi Ganga Bahubalindruni,Ana Santa,Jorge Martins,Priyanka Mittal,João Goes,Rodrigo Martins,Elvira Fortunato,Pedro Barquinha +8 more
TL;DR: In this article, the experimental characterization of different rectifier circuits using indium-gallium-zincoxide thin-film transistor technologies either at NFC or a high frequency range (13.56 MHz) of RFID was presented.
Journal ArticleDOI
Rail-to-Rail Timing Signals Generation Using InGaZnO TFTs For Flexible X-Ray Detector
Pydi Ganga Bahubalindruni,Bhawna Tiwari,Maria Pereira,Ana Santa,Jorge Martins,Ana Rovisco,Vitor Grade Tavares,Rodrigo Martins,Elvira Fortunato,Pedro Barquinha +9 more
TL;DR: These circuits, based on a-IGZO thin-film transistors with a simple staggered bottom gate structure, allow row and column selection of a sensor matrix embedded in a flexible radiation sensing system and show an improved performance compared to the conventional logic gates with diode connected load and pseudo CMOS counterparts.
Journal ArticleDOI
Low-Voltage High-Speed Ring Oscillator With a-InGaZnO TFTs
Bhawna Tiwari,Pydi Ganga Bahubalindruni,Angelo Santos,Ana Santa,Catia Figueiredo,Maria Ester Pereira,Rodrigo Martins,Elvira Fortunato,Pedro Barquinha +8 more
TL;DR: In this paper, a high-speed ring oscillator (RO) with amorphous Indium-Gallium-Zinc-Oxide Thin-film transistors (a-IGZO TFTs) is presented.
Proceedings ArticleDOI
A High Speed Programmable Ring Oscillator Using InGaZnO Thin-Film Transistors
Bhawna Tiwari,Jorge Martins,Shivam Kalla,Shashwat Kaushik,Ana Santa,Pydi Ganga Bahubalindruni,Vitor Grade Tavares,Pedro Barquinha +7 more
TL;DR: In this article, a programmable ring oscillator (RO) using Indium-gallium-zinc oxide thin-film transistors (IGZO TFTs) is presented.
Journal ArticleDOI
Threshold voltage extraction techniques adaptable from sub-micron CMOS to large-area oxide TFT technologies
TL;DR: Simple and accurate threshold voltage (VTH) extraction techniques, which can be directly adaptable to various semiconductor technologies ranging from deep sub-micron complementary metal–oxide–semiconductor to large-area thin-film transistor devices are proposed.