R. Deshpande
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View article: Enhancing Digital Microfluidics: A Comprehensive Investigation into the Performance of Slippery Liquid-Infused Porous Surfaces
Enhancing Digital Microfluidics: A Comprehensive Investigation into the Performance of Slippery Liquid-Infused Porous Surfaces Open
Slippery liquid-infused porous surfaces (SLIPS), formed by infusing porous Teflon with liquid lubricants, hold immense potential for applications in the field of digital microfluidics by enabling efficient droplet manipulation, preventing …
View article: ENHANCING REAL-TIME OBJECT DETECTION IN LOW-LIGHT CONDITIONS USING ZERO-DCE AND SUPER-RESOLUTION GANs: A YOLO-BASED APPROACH
ENHANCING REAL-TIME OBJECT DETECTION IN LOW-LIGHT CONDITIONS USING ZERO-DCE AND SUPER-RESOLUTION GANs: A YOLO-BASED APPROACH Open
Low-light conditions significantly degrade the performance of real-time object detection systems. This study proposes a novel pipeline that integrates Zero-Reference Deep Curve Estimation (Zero-DCE), which has been used to enhance the low-…
View article: Application Of Spring Boot Microservice Architecture for Scaling Banking Applications
Application Of Spring Boot Microservice Architecture for Scaling Banking Applications Open
This paper discusses the use of a microservice architecture with Spring Boot and Spring Cloud for scaling banking applications. It aims to identify the constraints of conventional monolithic banking platforms and then design architectural …
View article: A Correlative Study of Plasmonic Metasurfaces by Electron Energy-Loss Spectroscopy and Optical Spectroscopy: From Nanoscale Hotspots to Macroscale Optical Response
A Correlative Study of Plasmonic Metasurfaces by Electron Energy-Loss Spectroscopy and Optical Spectroscopy: From Nanoscale Hotspots to Macroscale Optical Response Open
We present a dual probe study of plasmonic metasurfaces using both electron energy-loss spectroscopy and optical spectroscopy. By fabricating plasmonic metasurfaces on ultrathin membranes, we enable both optical reflection and transmission…
View article: Report on the AAPM grand challenge on deep generative modeling for learning medical image statistics
Report on the AAPM grand challenge on deep generative modeling for learning medical image statistics Open
Background The findings of the 2023 AAPM Grand Challenge on Deep Generative Modeling for Learning Medical Image Statistics are reported in this Special Report. Purpose The goal of this challenge was to promote the development of deep gener…
View article: Design and large-scale nanofabrication of plasmonic solar light absorbers
Design and large-scale nanofabrication of plasmonic solar light absorbers Open
Surface plasmon resonances have been exploited for many applications due to their tunability, which is directly related to the geometry of nanostructures. Based on their dimension and material stack, the resonances can be tailored to achie…
View article: Assessing the capacity of a denoising diffusion probabilistic model to reproduce spatial context
Assessing the capacity of a denoising diffusion probabilistic model to reproduce spatial context Open
Diffusion models have emerged as a popular family of deep generative models (DGMs). In the literature, it has been claimed that one class of diffusion models -- denoising diffusion probabilistic models (DDPMs) -- demonstrate superior image…
View article: AmbientFlow: Invertible generative models from incomplete, noisy measurements
AmbientFlow: Invertible generative models from incomplete, noisy measurements Open
Generative models have gained popularity for their potential applications in imaging science, such as image reconstruction, posterior sampling and data sharing. Flow-based generative models are particularly attractive due to their ability …
View article: Understanding the light induced hydrophilicity of metal-oxide thin films
Understanding the light induced hydrophilicity of metal-oxide thin films Open
Photocatalytic effects resulting in water splitting, reduction of carbon dioxide to fuels using solar energy, decomposition of organic compounds, and light-induced hydrophilicity observed on surfaces of various metal oxides (MOx), all rely…
View article: Investigating the robustness of a learning-based method for quantitative phase retrieval from propagation-based x-ray phase contrast measurements under laboratory conditions
Investigating the robustness of a learning-based method for quantitative phase retrieval from propagation-based x-ray phase contrast measurements under laboratory conditions Open
Quantitative phase retrieval (QPR) in propagation-based x-ray phase contrast imaging of heterogeneous and structurally complicated objects is challenging under laboratory conditions due to partial spatial coherence and polychromaticity. A …
View article: A Method for Evaluating Deep Generative Models of Images via Assessing the Reproduction of High-order Spatial Context
A Method for Evaluating Deep Generative Models of Images via Assessing the Reproduction of High-order Spatial Context Open
Deep generative models (DGMs) have the potential to revolutionize diagnostic imaging. Generative adversarial networks (GANs) are one kind of DGM which are widely employed. The overarching problem with deploying GANs, and other DGMs, in any…
View article: Metasurface-enabled broadband beam splitters integrated with quarter-wave plate functionality
Metasurface-enabled broadband beam splitters integrated with quarter-wave plate functionality Open
Metasurface-enabled broadband beam splitters integrated with quarter-wave plate functionality for simultaneous power splitting and circular-to-linear polarization conversion have been demonstrated.
View article: Plasmonic color printing based on third-order gap surface plasmons [Invited]
Plasmonic color printing based on third-order gap surface plasmons [Invited] Open
Metasurfaces for color printing rely on the resonant interaction of light with nanostructures, which translates to small physical resonator sizes for visible wavelengths, thus demanding very high fabrication accuracy that necessitates low-…
View article: NMR study of optically hyperpolarized phosphorus donor nuclei in silicon
NMR study of optically hyperpolarized phosphorus donor nuclei in silicon Open
We use above-bandgap optical excitation, via a 1047 nm laser, to hyperpolarize the $^{31}$P spins in low-doped (N$_D =6\times10^{15}$ cm$^{-3}$) natural abundance silicon at 4.2 K and 6.7 T, and inductively detect the resulting NMR signal.…
View article: Bifunctional metamirrors for simultaneous polarization splitting and focusing
Bifunctional metamirrors for simultaneous polarization splitting and focusing Open
Metasurfaces - artificial 2D sheet structures with sub-wavelength periodicity and dimensions of elements - are paving the way to improve traditional optical components by integrating multiple functionalities into one optically flat device.…
View article: A review of gap-surface plasmon metasurfaces: fundamentals and applications
A review of gap-surface plasmon metasurfaces: fundamentals and applications Open
Plasmonic metasurfaces, which can be considered as the two-dimensional analog of metal-based metamaterials, have attracted progressively increasing attention in recent years because of the ease of fabrication and unprecedented control over…
View article: Third-order gap plasmon based metasurfaces for visible light
Third-order gap plasmon based metasurfaces for visible light Open
Efficient control and manipulation of light using metasurfaces requires high fabrication accuracy that becomes progressively demanding when decreasing the operation wavelength. Considering gap surface plasmon (GSP) based metasurfaces, we d…
View article: TESTING THE ASTEROSEISMIC SCALING RELATIONS FOR RED GIANTS WITH ECLIPSING BINARIES OBSERVED BY KEPLER
TESTING THE ASTEROSEISMIC SCALING RELATIONS FOR RED GIANTS WITH ECLIPSING BINARIES OBSERVED BY KEPLER Open
Given the potential of ensemble asteroseismology for understanding fundamental properties of large numbers of stars, it is critical to determine the accuracy of the scaling relations on which these measurements are based. From several powe…
View article: Testing the asteroseismic scaling relations for Red Giants with Eclipsing Binaries Observed by Kepler
Testing the asteroseismic scaling relations for Red Giants with Eclipsing Binaries Observed by Kepler Open
Given the potential of ensemble asteroseismology for understanding fundamental properties of large numbers of stars, it is critical to determine the accuracy of the scaling relations on which these measurements are based. From several powe…
View article: The SDSS-III APOGEE Radial Velocity Survey Of M Dwarfs. I. Description Of The Survey And Science Goals
The SDSS-III APOGEE Radial Velocity Survey Of M Dwarfs. I. Description Of The Survey And Science Goals Open
We are carrying out a large ancillary program with the Sloan Digital Sky Survey, SDSS-III, using the fiber-fed multi-object near-infrared APOGEE spectrograph, to obtain high-resolution H-band spectra of more than 1200 M dwarfs. These obser…