Results 81 to 90 of about 3,296,247 (272)

Monitoring of gas emissions at landfill sites using autonomous gas sensors [PDF]

, 2010
Executive Summary This report details the work carried out during the Smart Plant project (2005-AIC-MS-43-M4). As part of this research, an autonomous platform for monitoring greenhouse gases (methane (CH4), carbon dioxide (CO2)) has been developed,
Beirne, Stephen, Kiernan, Breda M., Diamond, Dermot, Fay, Cormac   +3 more
core   +3 more sources

Entropy‐Driven Design of Low‐Melting‐Point Alloys via Compositionally Complex Strategy

Advanced Engineering Materials, EarlyView.
Conventional low‐melting‐point alloys (LMPAs) are limited by a narrow compositional space and inherent property trade‐offs. This review presents an entropy‐driven design strategy that overcomes these limitations, ushering in a new class of low‐melting‐point compositionally complex alloys (LMCCAs).
Yinghui Shang, Jianxiang Zhao, Zhaoqi Chen, Hao Gong, Yinsen Yan, Junlei Tao, Yong Yang   +6 more
wiley   +1 more source

Absorbance based light emitting diode optical sensors and sensing devices [PDF]

, 2008
The ever increasing demand for in situ monitoring of health, environment and security has created a need for reliable, miniaturised sensing devices. To achieve this, appropriate analytical devices are required that possess operating characteristics of ...
O'Toole, Martina, Dermot Diamond, O\u27Toole, Martina, Martina O’Toole, Diamond, Dermot, Martina O’Toole   +5 more
core   +2 more sources

Pulse-driven MEMS gas sensor combined with machine learning for selective gas identification

Microsystems & Nanoengineering
The sensing and identification of trace gases are essential for ensuring chemical safety and protecting human health. This study introduces a low-power electronic nose system that utilizes a single sensor driven by repeated pulsed power inputs, offering ...
Wenxin Luo, Fa Dai, Yijun Liu, Xin Wang, Mingjie Li   +4 more
doaj   +1 more source

Study and Characterization of Silicon Nitride Optical Waveguide Coupling with a Quartz Tuning Fork for the Development of Integrated Sensing Platforms

Sensors
This work demonstrates an ultra-compact optical gas-sensing system, consisting of a pigtailed laser diode emitting at 1392.5 nm for water vapor (H2O) detection, a silicon nitride (Si3N4) optical waveguide to guide the laser light, and a custom-designed ...
Luigi Melchiorre, Ajmal Thottoli, Artem S. Vorobev, Giansergio Menduni, Angelo Sampaolo, Giovanni Magno, Liam O’Faolain, Vincenzo Spagnolo   +7 more
doaj   +1 more source

Cavity-enhanced light-induced thermoelastic spectroscopy for trace-gas sensing

Optics Express
We report a trace gas sensing technique of cavity-enhanced light-induced thermoelastic spectroscopy (CE-LITES) with a Fabry–Pérot (F-P) optical cavity and a high-quality-factor resonant quartz tuning fork (QTF). Pound-Drever-Hall (PDH) locking method is used to lock the laser to the optical cavity.
Dongqing Zhang, Hui Zhang, Hongqiang Fan, Mengpeng Hu, Haoran Wang, Junfeng Zhou, Jinguang Lv, Jingqiu Liang, Qiang Wang   +8 more
openaire   +2 more sources

Printed Integrated Logic Circuits Based on Chitosan‐Gated Organic Transistors for Future Edible Systems

Advanced Functional Materials, EarlyView.
Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco, Valerio Francesco Annese, Valerio Galli, Ilaria Penna, Debora Russo, Marina Veronesi, Rita Scarpelli, Stefania Sabella, Mario Caironi   +8 more
wiley   +1 more source

Non-dispersive infra-red (NDIR) measurement of carbon dioxide at 4.2μm in a compact and optically efficient sensor [PDF]

, 2013
Non-dispersive infra-red (NDIR) gas detection has enjoyed widespread uptake as a result of development of devices in the standard miniature format for gas sensors, consisting of a cylinder with external dimensions of 20mm diameter x 16.5mm height.
Hodgkinson, Jane, Tatam, Ralph P., Ho, Wah On, Saffell, John R., Smith, Richard   +4 more
core   +1 more source

Analysis of landfill gas migration by use of autonomous gas monitoring platforms [PDF]

, 2012
Autonomous gas sensing platforms have been developed to facilitate the long-term continuous monitoring of landfill gas concentrations. The analysis of a municipal landfill site in Ireland forms part of an on-going collaboration with the Environmental ...
Collins, Fiachra, Orpen, Dylan, Diamond, Dermot, Fay, Cormac   +3 more
core   +2 more sources

Morphology-controlled synthesis of MoSe$_2$ nanostructures for highly sensitive and low-temperature NO$_2$ gas sensor applications

Communications in Physics
The development of highly sensitive and selective gas sensors is essential for detecting toxic gases such as NO$_2$ at trace levels. In this study, MoSe$_2$ nanostructures with tunable morphologies were synthesized via a hydrothermal method by adjusting
Viet Nhat Nguyen, Thi Hong Van Nguyen, Duc Chien Nguyen, Van Duy Nguyen, Duc Hoa Nguyen, Manh Hung Chu   +5 more
doaj   +1 more source