P
Piyush Dak
Researcher at Purdue University
Publications - 24
Citations - 594
Piyush Dak is an academic researcher from Purdue University. The author has contributed to research in topics: Nanomedicine & Non-volatile memory. The author has an hindex of 8, co-authored 24 publications receiving 509 citations. Previous affiliations of Piyush Dak include Western Digital & SanDisk.
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Journal ArticleDOI
Two-dimensional Layered MoS2 Biosensors Enable Highly Sensitive Detection of Biomolecules
Joonhyung Lee,Piyush Dak,Yeonsung Lee,Heekyeong Park,Woong Choi,Muhammad A. Alam,Sunkook Kim +6 more
TL;DR: The experimental demonstration and the theoretical framework provide a comprehensive description of the performance potential of dielectric-free MoS2-based biosensor technology.
Journal ArticleDOI
High-Mobility Transistors Based on Large-Area and Highly Crystalline CVD-Grown MoSe2 Films on Insulating Substrates.
Jong-Soo Rhyee,Junyeon Kwon,Piyush Dak,Jin Hee Kim,Seung Min Kim,Jozeph Park,Young Ki Hong,Won Geun Song,I. Omkaram,Muhammad A. Alam,Sunkook Kim +10 more
TL;DR: Large-area and highly crystalline CVD-grown multilayer MoSe2 films exhibit a well-defined crystal structure (2H phase) and large grains reaching several hundred micrometers and suggest that high mobility materials will be indispensable for various future applications such as high-resolution displays and human-centric soft electronics.
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Nanotextured superhydrophobic electrodes enable detection of attomolar-scale DNA concentration within a droplet by non-faradaic impedance spectroscopy.
Aida Ebrahimi,Piyush Dak,Eric Salm,Susmita Dash,Suresh V. Garimella,Rashid Bashir,Muhammad A. Alam +6 more
TL;DR: This work has developed a fast, low cost, non-faradaic impedance sensing method for detection of synthetic DNA molecules in DI water at attomolar levels by beating the diffusion limit through evaporation of a micro-liter droplet of DNA on a nanotextured superhydrophobic electrode array.
Journal ArticleDOI
Droplet-based Biosensing for Lab-on-a-Chip, Open Microfluidics Platforms.
Piyush Dak,Aida Ebrahimi,Vikhram V. Swaminathan,Carlos Duarte-Guevara,Rashid Bashir,Muhammad A. Alam +5 more
TL;DR: The key challenges that must be addressed to make label-free, droplet-based biosensors commercially viable are identified and a number of promising research directions are summarized.
Journal ArticleDOI
Non-faradaic impedance characterization of an evaporating droplet for microfluidic and biosensing applications
TL;DR: A general numerical/analytical theory of non-faradaic impedance of an evaporating droplet, and validated the model by experiments involving droplets of various analyte concentrations deposited on a surface defined by coplanar electrodes.