Vertically aligned silicon nanowire mid-infrared carbon monoxide gas sensor

2019 ◽  
Author(s):  
Nourhan H. Rasheed ◽  
Christen Tharwat ◽  
Mohamed Swillam
Keyword(s):  
Carbon Monoxide ◽  
Gas Sensor ◽  
Silicon Nanowire ◽  
Mid Infrared ◽  
Vertically Aligned

Two dimensional MoS2 gas sensor to detect carbon monoxide (CO)

2021 ◽  
Author(s):  
Saurabh Rawat ◽  
Priyanka Bamola ◽  
Charu Dwivedi ◽  
Himani Sharma
Keyword(s):  
Carbon Monoxide ◽  
Gas Sensor ◽  
Two Dimensional

scholarly journals Optically transparent vertical silicon nanowire arrays for live-cell imaging

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Roey Elnathan ◽  
Andrew W. Holle ◽  
Jennifer Young ◽  
Marina A. George ◽  
Omri Heifler ◽  
...  
Keyword(s):  
High Efficiency ◽  
Silicon Nanowire ◽  
Live Cell ◽  
Si Nanowires ◽  
Contrast Imaging ◽  
Silicon Nanowire Arrays ◽  
Transparent Substrate ◽  
Optically Transparent ◽  
Vertically Aligned

AbstractProgrammable nano-bio interfaces driven by tuneable vertically configured nanostructures have recently emerged as a powerful tool for cellular manipulations and interrogations. Such interfaces have strong potential for ground-breaking advances, particularly in cellular nanobiotechnology and mechanobiology. However, the opaque nature of many nanostructured surfaces makes non-destructive, live-cell characterization of cellular behavior on vertically aligned nanostructures challenging to observe. Here, a new nanofabrication route is proposed that enables harvesting of vertically aligned silicon (Si) nanowires and their subsequent transfer onto an optically transparent substrate, with high efficiency and without artefacts. We demonstrate the potential of this route for efficient live-cell phase contrast imaging and subsequent characterization of cells growing on vertically aligned Si nanowires. This approach provides the first opportunity to understand dynamic cellular responses to a cell-nanowire interface, and thus has the potential to inform the design of future nanoscale cellular manipulation technologies.

Mid-infrared ChG-on-MgF2 waveguide gas sensor based on wavelength modulation spectroscopy

2021 ◽  
Author(s):  
Mingquan Pi ◽  
Chuantao Zheng ◽  
Huan Zhao ◽  
Zihang Peng ◽  
Jiaming Lang ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Wavelength Modulation Spectroscopy ◽  
Wavelength Modulation ◽  
Mid Infrared ◽  
Modulation Spectroscopy

Graphene gas sensor with mid-infrared plasmons tuned by reversible chemical doping

2021 ◽  
Author(s):  
Nestor Jr. Bareza ◽  
Bruno Paulillo ◽  
Kavitha K. Gopalan ◽  
Rose Alani ◽  
Valerio Pruneri
Keyword(s):  
Gas Sensor ◽  
Chemical Doping ◽  
Mid Infrared

scholarly journals A Catalytic Combustion-type Carbon Monoxide Gas Sensor Incorporating an Apatite-type Oxide

2016 ◽  
Vol 56 (9) ◽  
pp. 1634-1637 ◽  
Author(s):  
Ayaka Hosoya ◽  
Shinji Tamura ◽  
Nobuhito Imanaka
Keyword(s):  
Carbon Monoxide ◽  
Gas Sensor ◽  
Catalytic Combustion ◽  
Apatite Type

Two-component gas sensing with MIR dual comb spectroscopy

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Leonard Nitzsche ◽  
Jens Goldschmidt ◽  
Armin Lambrecht ◽  
Jürgen Wöllenstein
Keyword(s):  
Carbon Monoxide ◽  
Nitrous Oxide ◽  
Gas Sensing ◽  
Integration Time ◽  
Relative Precision ◽  
Acquisition Rate ◽  
Mid Infrared ◽  
Two Component ◽  
Absorption Features

Abstract A dual comb spectrometer is used as gas sensor for the parallel detection of nitrous oxide (N2O) and carbon monoxide (CO). These gases have overlapping absorption features in the mid-infrared (MIR) at a wavelength of 4.6 µm. With a spectra acquisition rate of 10 Hz, concentrations of 50 ppm N2O and 30 ppm CO are monitored with a relative precision of 6 × 10 − 3 6\times {10^{-3}} and 3 × 10 − 3 3\times {10^{-3}} respectively. The limit of detections are 91 ppb for N2O and 50 ppb for CO for an integration time of 25 s. The system exhibits a linear sensitivity from 2 ppm to 100 ppm with coefficients of determination of 0.99998 for N2O and 0.99996 for CO.

scholarly journals Antiresonant Hollow-Core Fiber-Based Dual Gas Sensor for Detection of Methane and Carbon Dioxide in the Near- and Mid-Infrared Regions

Sensors ◽  
2020 ◽  
Vol 20 (14) ◽  
pp. 3813 ◽  
Author(s):  
Piotr Jaworski ◽  
Paweł Kozioł ◽  
Karol Krzempek ◽  
Dakun Wu ◽  
Fei Yu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Gas Sensor ◽  
Gas Sensing ◽  
Simultaneous Detection ◽  
Hollow Core ◽  
Mid Infrared ◽  
Sensing Applications ◽  
Core Fiber ◽  
Sensor Configuration ◽  
Carbon Dioxide Co2

In this work, we present for the first time a laser-based dual gas sensor utilizing a silica-based Antiresonant Hollow-Core Fiber (ARHCF) operating in the Near- and Mid-Infrared spectral region. A 1-m-long fiber with an 84-µm diameter air-core was implemented as a low-volume absorption cell in a sensor configuration utilizing the simple and well-known Wavelength Modulation Spectroscopy (WMS) method. The fiber was filled with a mixture of methane (CH4) and carbon dioxide (CO2), and a simultaneous detection of both gases was demonstrated targeting their transitions at 3.334 µm and 1.574 µm, respectively. Due to excellent guidance properties of the fiber and low background noise, the proposed sensor reached a detection limit down to 24 parts-per-billion by volume for CH4 and 144 parts-per-million by volume for CO2. The obtained results confirm the suitability of ARHCF for efficient use in gas sensing applications for over a broad spectral range. Thanks to the demonstrated low loss, such fibers with lengths of over one meter can be used for increasing the laser-gas molecules interaction path, substituting bulk optics-based multipass cells, while delivering required flexibility, compactness, reliability and enhancement in the sensor’s sensitivity.

Sign in / Sign up

Export Citation Format

Share Document