Zobrazeno 1 - 10
of 177
pro vyhledávání: '"Dubey Vishesh"'
Autor:
Jayakumar Nikhil, Dullo Firehun T., Dubey Vishesh, Ahmad Azeem, Ströhl Florian, Cauzzo Jennifer, Guerreiro Eduarda Mazagao, Snir Omri, Skalko-Basnet Natasa, Agarwal Krishna, Ahluwalia Balpreet Singh
Publikováno v:
Nanophotonics, Vol 11, Iss 15, Pp 3421-3436 (2022)
The article elucidates the physical mechanism behind the generation of superior-contrast and high-resolution label-free images using an optical waveguide. Imaging is realized by employing a high index contrast multi-moded waveguide as a partially coh
Externí odkaz:
https://doaj.org/article/c9d0e631ba67407fb17f14c0bb65d32f
Autor:
Jayakumar Nikhil, Dullo Firehun T., Dubey Vishesh, Ahmad Azeem, Ströhl Florian, Cauzzo Jennifer, Guerreiro Eduarda Mazagao, Snir Omri, Skalko-Basnet Natasa, Agarwal Krishna, Ahluwalia Balpreet Singh
Publikováno v:
Nanophotonics, Vol 11, Iss 20, Pp 4601-4601 (2022)
Externí odkaz:
https://doaj.org/article/543ec177f996494fbfba317e928b84f2
Autor:
Jayakumar, Nikhil, Dullo, Firehun T, Dubey, Vishesh, Ahmad, Azeem Ahmad, Cauzzo, Jennifer, Guerreiro, Eduarda Mazagao, Snir, Omri, Skalko-Basnet, Natasa, Agarwal, Krishna, Ahluwalia, Balpreet Singh
Chip-based Evanescent Light Scattering (cELS) utilizes the multiple modes of a high-index contrast optical waveguide for near-field illumination of unlabeled samples, thereby repositioning the highest spatial frequencies of the sample into the far-fi
Externí odkaz:
http://arxiv.org/abs/2108.10575
Autor:
Ahmad, Azeem, Dubey, Vishesh, Jayakumar, Nikhil, Habib, Anowarul, Butola, Ankit, Nystad, Mona, Acharya, Ganesh, Basnet, Purusotam, Mehta, Dalip Singh, Ahluwalia, Balpreet Singh
High space-bandwidth product with high spatial phase sensitivity is indispensable for a single-shot quantitative phase microscopy (QPM) system. It opens avenue for widespread applications of QPM in the field of biomedical imaging. Temporally low cohe
Externí odkaz:
http://arxiv.org/abs/2012.06674
Autor:
Butola, Ankit, Kanade, Sheetal Raosaheb, Bhatt, Sunil, Dubey, Vishesh Kumar, Kumar, Anand, Ahmad, Azeem, Prasad, Dilip K, Senthilkumaran, Paramasivam, Ahluwalia, Balpreet Singh, Mehta, Dalip Singh
Quantitative phase microscopy (QPM) is a label-free technique that enables to monitor morphological changes at subcellular level. The performance of the QPM system in terms of spatial sensitivity and resolution depends on the coherence properties of
Externí odkaz:
http://arxiv.org/abs/2007.02397
Autor:
Priyadarshi, Anish, Dullo, Firehun Tsige, Wolfson, Deanna L., Ahmad, Azeem, Jayakumar, Nikhil, Dubey, Vishesh, Tinguely, Jean-Claude, Ahluwalia, Balpreet Singh, Murugan, Ganapathy Senthil
Publikováno v:
2021
Total internal reflection fluorescence microscopy (TIRF) has enabled low-background, live-cell friendly imaging of cell surfaces and other thin samples thanks to the shallow penetration of the evanescent light field into the sample. The implementatio
Externí odkaz:
http://arxiv.org/abs/2006.07275
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Autor:
Usmani, Kashif, Ahmad, Azeem, Joshi, Rakesh, Dubey, Vishesh, Butola, Ankit, Mehta, Dalip Singh
Coherence properties and wavelength of light sources are indispensable for optical coherence microscopy/tomography as they greatly influence the signal to noise ratio, axial resolution, and penetration depth of the system. In the present letter, we i
Externí odkaz:
http://arxiv.org/abs/1904.04245
Autor:
Butola, Ankit, Prasad, Dilip K., Ahmad, Azeem, Dubey, Vishesh, Qaiser, Darakhshan, Srivastava, Anurag, Senthilkumaran, Paramsivam, Ahluwalia, Balpreet Singh, Mehta, Dalip Singh
Optical coherence tomography (OCT) is being increasingly adopted as a label-free and non-invasive technique for biomedical applications such as cancer and ocular disease diagnosis. Diagnostic information for these tissues is manifest in textural and
Externí odkaz:
http://arxiv.org/abs/1812.02487
High temporal stability is the primary requirement of any quantitative phase microscope (QPM) systems for the early stage detection of various human related diseases. The high temporal stability of the system provides accurate measurement of membrane
Externí odkaz:
http://arxiv.org/abs/1812.01057