Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Ranjith R Unnithan"'
Publikováno v:
Micro and Nano Engineering, Vol 24, Iss , Pp 100270- (2024)
A rapid and robust method to fabricate transmission diffractive optical elements in the visible wavelengths is presented. By additive manufacturing of a polymeric photo-resin using 2-photon lithography followed by encasing of the structure in another
Externí odkaz:
https://doaj.org/article/718e80844ec144c59152709e78ff3e92
Autor:
Tianzhi Li, Yang Yu, Yutong Liu, Ranjith R. Unnithan, Ryan J. McDermott, Dominique Schreurs, Robin Evans, Efstratios Skafidas
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-15 (2024)
Abstract Antennas that can operate across multiple communication standards have remained a challenge. To address these limitations, we propose a Field-Programmable Radio Frequency Surface (FPRFS), which is based on manipulating current flow on its su
Externí odkaz:
https://doaj.org/article/abf3d4595864497f80184e4dc41e2c61
Autor:
Gregory Tanyi, Daniel Peace, Mohammed Taha, Elliot Cheng, Xuan Hiep Dinh, Guanghui Ren, Christina Lim, Arnan Mitchell, Ranjith R. Unnithan
Publikováno v:
Advanced Photonics Research, Vol 5, Iss 7, Pp n/a-n/a (2024)
Photonic switches play a vital role in optical communications and computer networks for establishing and releasing connections of optical signals. With the growing demand for ultra‐compact switches in high‐speed optical computing and communicatio
Externí odkaz:
https://doaj.org/article/d1d643e6cead4df19f40c5f663f51060
Autor:
Dechuan Sun, Gregory Tanyi, Alan Lee, Chris French, Younger Liang, Christina Lim, Ranjith R. Unnithan
Publikováno v:
APL Photonics, Vol 9, Iss 6, Pp 066110-066110-7 (2024)
The mass production of augmented reality (AR) waveguides has been challenging due to the intricate nature of the fabrication technique and the high precision required for their optical characteristics. In this paper, we have presented a novel and low
Externí odkaz:
https://doaj.org/article/290d0b479c0d49c0a40904b4528a7836
Publikováno v:
Nano Select, Vol 4, Iss 5, Pp 346-352 (2023)
Abstract We present an electro‐optic modulator exploiting a metamaterial made of an array of vanadium dioxide nanorods operating in epsilon‐near‐zero regime as the active switching material in a silicon waveguide. The modulator takes advantage
Externí odkaz:
https://doaj.org/article/67dbf942800b4968ba17d9f2568141bf
Publikováno v:
Sensors, Vol 21, Iss 17, p 5948 (2021)
Advances in early insect detection have been reported using digital technologies through camera systems, sensor networks, and remote sensing coupled with machine learning (ML) modeling. However, up to date, there is no cost-effective system to monito
Externí odkaz:
https://doaj.org/article/7e7d8e61c66d4964b9959531688214d1
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 3, Pp 1-10 (2017)
We present design of plasmonic modulators using vanadium dioxide (VO2) as modulating material realized on silicon-on-insulator (SOI) wafer with only 200 nm × 140 nm modulating section within 1 μ m × 3 μm device footprint. By utilising the large r
Externí odkaz:
https://doaj.org/article/cdbb21767f474be9abcdaac026c7b413
Autor:
Noor E. Karishma Shaik, Bryce Widdicombe, Nandakishor Desai, Marimuthu Palaniswami, Ampalavanapillai Nirmalathas, Ranjith R. Unnithan
Publikováno v:
SPIE Future Sensing Technologies 2023.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8188c70e71f2a67dcbc12ec0d9da7622
https://doi.org/10.1117/12.2666952
https://doi.org/10.1117/12.2666952
Longwave infrared multispectral image sensor system using aluminum-germanium plasmonic filter arrays
Autor:
Noor E Karishma Shaik, Bryce Widdicombe, Dechuan Sun, Sam E John, Dongryeol Ryu, Nirmalathas Ampalavanapillai, Ranjith R Unnithan
A multispectral camera records image data in various wavelengths across the electromagnetic spectrum to acquire additional information that a conventional camera fails to capture. With the advent of high-resolution image sensors and color filter tech
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc636817dd683107b2e106b794669788
Autor:
Sigfredo Fuentes, Vasiliki Summerson, Claudia Gonzalez Viejo, Eden Tongson, Nir Lipovetzky, Kerry L. Wilkinson, Colleen Szeto, Ranjith R. Unnithan
Publikováno v:
Sensors, Vol 20, Iss 18, p 5108 (2020)
Bushfires are increasing in number and intensity due to climate change. A newly developed low-cost electronic nose (e-nose) was tested on wines made from grapevines exposed to smoke in field trials. E-nose readings were obtained from wines from five
Externí odkaz:
https://doaj.org/article/aa210bf6770c423487aa464e1e82a9a6