scholarly journals Design and Numerical Evaluation of a Highly Selective CMOS-Compatible Mid-IR Thermal Emitter/Detector Structure Using Optical Tamm-States

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1032 ◽  
Author(s):  
Gerald Pühringer ◽  
Bernhard Jakoby
Keyword(s):  
Thermal Emission ◽  
Low Cost ◽  
Slab Waveguide ◽  
One Dimensional ◽  
Detector Structure ◽  
Thermal Emitter ◽  
Cmos Compatible ◽  
On Chip ◽  
Vertical Cavity ◽  
Selective Thermal Emitter

In this work we propose and evaluate a concept for a selective thermal emitter suitable for monolithic on-chip integration suitable for fabrication by conventional CMOS-compatible processes. The concept is based on our recently presented work on vertical-cavity enhanced resonant thermal emission (VERTE). Here we present the application of this concept to a slab waveguide structure, instead of depositing extended dielectric layers forming a one-dimensional photonic crystal. We optimize the dimension by certain design considerations and geneticalgorithm optimization and demonstrate effective absorbing/emitting properties (depending on different slab heights) of such a low-cost structure by exciting so-called optical Tamm-states on the metal-dielectric interface.

scholarly journals Photonic Crystals: Shaping the Flow of Thermal Radiation

2009 ◽  
Vol 1162 ◽  
Author(s):  
Ivan Čelanović ◽  
Michael Ghebrebrhan ◽  
Yi Xiang Yeng ◽  
John Kassakian ◽  
Marin Soljačić ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Thermal Emission ◽  
Resonant Cavity ◽  
Broad Band ◽  
Selective Emitter ◽  
Spatial Properties ◽  
Resonant Modes ◽  
Thermal Emitters ◽  
Thermal Emitter ◽  
Vertical Cavity

AbstractIn this paper we explore theory, design, and fabrication of photonic crystal (PhC) based selective thermal emitters. In particular, we focus on tailoring spectral and spatial properties by means of resonant enhancement in PhC's. Firstly, we explore narrow-band resonant thermal emission in photonic crystals exhibiting strong spectral and directional selectivity. We demonstrate two interesting designs based on resonant Q-matching: a vertical cavity enhanced resonant thermal emitter and 2D silicon PhC slab Fano-resonance based thermal emitter. Secondly, we examine the design of 2D tungsten PhC as a broad-band selective emitter. Indeed, based on the resonant cavity coupled resonant modes we demonstrate a highly selective, highly-spectrally efficient thermal emitter. We show that an emitter with a photonic cut-off anywhere from 1.8 μm to 2.5 μm can be designed.

scholarly journals Highly Selective CMOS-Compatible Mid-Infrared Thermal Emitter/Detector Slab Design Using Optical Tamm-States

Materials ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 929 ◽  
Author(s):  
Gerald Pühringer ◽  
Bernhard Jakoby
Keyword(s):  
Field Enhancement ◽  
Oxide Semiconductor ◽  
Co2 Absorption ◽  
Original Design ◽  
Mid Infrared ◽  
One Dimensional ◽  
Sensing Applications ◽  
Thermal Emitter ◽  
Cmos Compatible ◽  
Silicon Slab

In this work, we propose and evaluate a concept for a selective thermal emitter based on Tamm plasmons suitable for monolithic on-chip integration and fabrication by conventional complementary metal oxide semiconductor (CMOS)-compatible processes. The original design of Tamm plasmon structures features a purely one-dimensional array of layers including a Bragg mirror and a metal. The resonant field enhancement next to the metal interface corresponding to optical Tamm states leads to resonant emission at the target wavelength, which depends on the lateral dimensions of the bandgap structure. We demonstrate the application of this concept to a silicon slab structure instead of deploying extended one dimensional layers thus enabling coupling into slab waveguides. Here we focus on the mid-infrared region for absorption sensing applications, particularly on the CO2 absorption line at 4.26 µm as an example. The proposed genetic-algorithm optimization process utilizing the finite-element method and the transfer-matrix method reveals resonant absorption in case of incident modes guided by the slab and, by Kirchhoff’s law, corresponds to emittance up to 90% depending on different choices of the silicon slab height when the structure is used as a thermal emitter. Although we focus on the application as an emitter in the present work, the structure can also be operated as an absorber providing adjusted lateral dimensions and/or exchanged materials (e.g., a different choice for metal).

Multispectral Photonic Crystal Photo Sensor

2006 ◽  
Vol 952 ◽  
Author(s):  
Xiaochen Sun ◽  
Juejun Hu ◽  
Ching-yin Hong ◽  
Jeff Viens ◽  
Rupa Das ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Photonic Crystal ◽  
Amorphous Silicon ◽  
Low Cost ◽  
Resonant Cavity ◽  
High Quantum Efficiency ◽  
One Dimensional ◽  
Photo Sensor ◽  
Cmos Compatible ◽  
1D Photonic Crystal

ABSTRACTA novel photo sensor pixel using a one-dimensional (1D) photonic crystal structure incorporating photoconductive layers has been realized. The fabricated device exploits mode discrimination to provide simultaneous multispectral photo sensing capability. Resonant cavity enhancement (RCE) design allows the use of very thin photoconductive layer to achieve dramatically suppressed shot noise, as well as high quantum efficiency. Low cost amorphous silicon is used to be photoconductive material and the simply fabrication process is completely CMOS-compatible. Detectivities as high as 2.6×1010 cmHz1/2W−1 and 2.0×1010 cmHz1/2W−1 at the two pre-selected wavelengths, 632nm and 728nm, were achieved, respectively.

scholarly journals Optimal Design of Wavelength Selective Thermal Emitter for Thermophotovoltaic Applications

2017 ◽  
Vol 10 (1) ◽  
Author(s):  
Alok Ghanekar ◽  
Mingdi Sun ◽  
Zongqin Zhang ◽  
Yi Zheng
Keyword(s):  
Optimal Design ◽  
Silicon Dioxide ◽  
Radiative Properties ◽  
Optimal Designs ◽  
Emitter Temperature ◽  
One Dimensional ◽  
Radiated Energy ◽  
Dielectric Gratings ◽  
Thermal Emitter ◽  
Selective Thermal Emitter

We theoretically and numerically demonstrate optimal design of wavelength selective thermal emitter using one-dimensional (1D) and two-dimensional (2D) metal-dielectric gratings for thermophotovoltaic (TPV) applications. Proposed design consists of tungsten (W) and silicon dioxide (SiO2) gratings which can withstand high temperatures. Radiative properties of 1D grating were calculated using a numerical method, while effective medium approximation was used for 2D gratings. Optimal designs were obtained such that output power is maximum for GaSb photovoltaic (PV) cell at emitter temperature of 1500 K and radiated energy for longer wavelengths is limited to a low value. A constrained optimization was performed using genetic algorithm (GA) to arrive at optimal design.

scholarly journals Design and Manufacturing of a Disposable, Cyclo-Olefin Copolymer, Microfluidic Device for a Biosensor †

Sensors ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 1178 ◽  
Author(s):  
Jorge Prada ◽  
Christina Cordes ◽  
Carsten Harms ◽  
Walter Lang
Keyword(s):  
Microfluidic Device ◽  
Heating Temperature ◽  
Low Cost ◽  
Reaction Chamber ◽  
Microfluidic System ◽  
Heating Process ◽  
Design And Manufacturing ◽  
On Chip ◽  
Working Parameters ◽  
Auto Fluorescence

This contribution outlines the design and manufacturing of a microfluidic device implemented as a biosensor for retrieval and detection of bacteria RNA. The device is fully made of Cyclo-Olefin Copolymer (COC), which features low auto-fluorescence, biocompatibility and manufacturability by hot-embossing. The RNA retrieval was carried on after bacteria heat-lysis by an on-chip micro-heater, whose function was characterized at different working parameters. Carbon resistive temperature sensors were tested, characterized and printed on the biochip sealing film to monitor the heating process. Off-chip and on-chip processed RNA were hybridized with capture probes on the reaction chamber surface and identification was achieved by detection of fluorescence tags. The application of the mentioned techniques and materials proved to allow the development of low-cost, disposable albeit multi-functional microfluidic system, performing heating, temperature sensing and chemical reaction processes in the same device. By proving its effectiveness, this device contributes a reference to show the integration potential of fully thermoplastic devices in biosensor systems.

scholarly journals On-Chip Narrowband Thermal Emitter for Mid-IR Optical Gas Sensing

ACS Photonics ◽  
2017 ◽  
Vol 4 (6) ◽  
pp. 1371-1380 ◽  
Author(s):  
Alexander Lochbaum ◽  
Yuriy Fedoryshyn ◽  
Alexander Dorodnyy ◽  
Ueli Koch ◽  
Christian Hafner ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Thermal Emitter ◽  
Optical Gas Sensing ◽  
On Chip

On-Chip Fabrication of None-Dead-Volume Microtips for ESI-MS Applications

2007 ◽  
Vol 121-123 ◽  
pp. 611-614
Author(s):  
Che Hsin Lin ◽  
Jen Taie Shiea ◽  
Yen Lieng Lin
Keyword(s):  
Surface Tension ◽  
Low Cost ◽  
Microfluidic Channel ◽  
Dead Volume ◽  
Esi Ms ◽  
Rapid Fabrication ◽  
Chip Fabrication ◽  
Novel Method ◽  
On Chip ◽  
Highly Uniform

This paper proposes a novel method to on-chip fabricate a none-dead-volume microtip for ESI-MS applications. The microfluidic chip and ESI tip are fabricated in low-cost plastic based materials using a simple and rapid fabrication process. A constant-speed-pulling method is developed to fabricate the ESI tip by pulling mixed PMMA glue using a 30-μm stainless wire through the pre-formed microfluidic channel. The equilibrium of surface tension of PMMA glue will result in a sharp tip after curing. A highly uniform micro-tip can be formed directly at the outlet of the microfluidic channel with minimum dead-volume zone. Detection of caffeine, myoglobin, lysozyme and cytochrome C biosamples confirms the microchip device can be used for high resolution ESI-MS applications.

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