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Phonon-polaritonics: enabling powerful capabilities for infrared photonics
- S. Foteinopoulou, G. Devarapu, G. Subramania, S. Krishna, D. Wasserman
- 17 October 2019
Abstract Here, we review the progress and most recent advances in phonon-polaritonics, an emerging and growing field that has brought about a range of powerful possibilities for mid- to far-infrared…
Broadband near-unidirectional absorption enabled by phonon-polariton resonances in SiC micropyramid arrays
Inspired by moth eyes, nature's most powerful antireflex, we present a sub-wavelength SiC micropyramid design, which operates in the Reststrahlen band of SiC, namely the spectral band of strong…
Mid-IR near-perfect absorption with a SiC photonic crystal with angle-controlled polarization selectivity.
The study reveals an intricate relationship between absorption efficiency and the energy velocity of light propagation, that is far more complex than hitherto believed and suggests that absorption peaks away from the photonic-crystal band edge where energy velocity is minimum.
Broadband Mid-IR superabsorption with aperiodic polaritonic photonic crystals
We propose an approach for broadband near-perfect absorption with aperiodic-polaritonic photonic crystals (PCs) operating in the phononpolariton gap of the constituent material. In this frequency…
ODX - A fitness tracker-based device for continuous bacterial growth monitoring.
- V. V. Yallapragada, Uday Gowda, David Wong, L. O’Faolain, M. Tangney, G. Devarapu
- BiologyAnalytical chemistry
- 3 September 2019
The ODX device is an ultra-portable and low-cost device that can be used inside bacterial incubators for real-time monitoring even while shaking is in progress and has wide range of applications in biotechnology research and industry.
Thermally stable hybrid cavity laser based on silicon nitride gratings.
The experimental results of a thermally stable Si3N4 external cavity (SiN EC) laser with high power output and the lowest SiN EC laser threshold to the authors' knowledge are shown, showing the possibility for this device to be integrated in dense wavelength-division multiplexing (WDM) and heat-intensive optical interconnects technologies.
Compact photonic-crystal superabsorbers from strongly absorbing media
We present a route to near-perfect absorption in compact photonic-crystal (PC) structures constructed from strongly absorbing media that are typically highly reflective in bulk form. Our analysis…
Mobilefuge: A low-cost, portable, open source, 3D-printed centrifuge that can be used for purification of saliva samples for SARS-CoV2 detection
The invention of the 3D printed centrifuge (Mobilefuge), which can be useful for carrying out low-cost LAMP based detection of SARS-Cov2 virus in saliva, will aid the efforts to contain the spread of COVID-19 by lowering the costs of testing equipment.
Low-loss, compact, spot-size-converter based vertical couplers for photonic integrated circuits
In recent years, the monolithic integration of new materials such as SiN, Ge and LiNbO3 on silicon (Si) has become important to the Si photonics community due to the possibility of combining the…
HistoEnder: a 3D printer-based histological slide autostainer that retains 3D printer functions
Automated microscope slide stainers are usually very expensive and unless the laboratory performs heavy histological work it is difficult to justify buying a 2000-10000€ machine. As a result,…