User profiles for Piyush Raj

Piyush Raj

- Verified email at jhu.edu - Cited by 251

Piyush Raj

- Verified email at alphaori.sg - Cited by 57

Label-free spectroscopic SARS-CoV-2 detection on versatile nanoimprinted substrates

D Paria, KS Kwok, P Raj, P Zheng, DH Gracias… - Nano …, 2022 - ACS Publications
Widespread testing and isolation of infected patients is a cornerstone of viral outbreak
management, as underscored during the ongoing COVID-19 pandemic. Here, we report a large-…

Furin‐mediated self‐assembly of olsalazine nanoparticles for targeted Raman imaging of tumors

Y Yuan, P Raj, J Zhang, S Siddhanta… - Angewandte …, 2021 - Wiley Online Library
Olsalazine (Olsa) is a broad‐spectrum anti‐cancer agent acting as a DNA‐methylation
inhibitor. When conjugated to 2‐cyano‐6‐aminobenzothiazole and a peptide substrate specific …

Raman and quantitative phase imaging allow morpho-molecular recognition of malignancy and stages of B-cell acute lymphoblastic leukemia

SK Paidi, P Raj, R Bordett, C Zhang… - Biosensors and …, 2021 - Elsevier
Acute lymphoblastic leukemia (ALL) is one of the most common malignancies that account
for nearly one-third of all pediatric cancers. The current diagnostic assays are time-consuming…

A Dual‐Modal Single‐Antibody Plasmonic Spectro‐Immunoassay for Detection of Small Molecules

P Zheng, L Wu, P Raj, T Mizutani, M Szabo… - Small, 2022 - Wiley Online Library
Small molecules play a pivotal role in regulating physiological processes and serve as
biomarkers to uncover pathological conditions and the effects of therapeutic treatments. However, …

Targeted Enzyme Activity Imaging with Quantitative Phase Microscopy

S Tanwar, L Wu, N Zahn, P Raj, B Ghaemi… - Nano …, 2023 - ACS Publications
Quantitative phase imaging (QPI) is a powerful optical imaging modality for label-free, rapid,
and three-dimensional (3D) monitoring of cells and tissues. However, molecular imaging of …

Optical diffraction tomography and Raman spectroscopy reveal distinct cellular phenotypes during white and brown adipocyte differentiation

P Anantha, Z Liu, P Raj, I Barman - Biosensors and Bioelectronics, 2023 - Elsevier
White adipose tissue (WAT) and brown adipose tissue (BAT) are the primary types of fats in
humans, and they play prominent roles in energy storage and thermogenesis, respectively. …

Leveraging Nanomechanical Perturbations in Raman Spectro‐Immunoassays to Design a Versatile Serum Biomarker Detection Platform

P Zheng, P Raj, L Wu, M Szabo, WA Hanson… - Small, 2022 - Wiley Online Library
While immunoassays are pivotal to medical diagnosis and bioanalytical chemistry, the
current landscape of public health has catalyzed an important shift in the requirements of …

Coarse Raman and optical diffraction tomographic imaging enable label-free phenotyping of isogenic breast cancer cells of varying metastatic potential

SK Paidi, V Shah, P Raj, K Glunde, R Pandey… - Biosensors and …, 2021 - Elsevier
Identification of the metastatic potential represents one of the most important tasks for molecular
imaging of cancer. While molecular imaging of metastases has witnessed substantial …

Raman spectroscopy and machine learning reveals early tumor microenvironmental changes induced by immunotherapy

SK Paidi, J Rodriguez Troncoso, P Raj… - Cancer research, 2021 - AACR
This study provides first-in-class evidence that optical spectroscopy allows sensitive
detection of early changes in the biomolecular composition of tumors that predict response to …

Stable High‐Conductivity Ethylenedioxythiophene Polymers via Borane‐Adduct Doping

…, TD Lee, C Ganley, S Tanwar, P Raj… - Advanced Functional …, 2022 - Wiley Online Library
Efficient doping of polymer semiconductors is required for high conductivity and efficient
thermoelectric performance. Lewis acids, eg, B(C 6 F 5 ) 3 , have been widely employed as …