scholarly journals Novel Approaches Towards Highly Selective Self-Powered Gas Sensors

2015 ◽  
Vol 120 ◽  
pp. 623-627 ◽  
Author(s):  
M.W.G. Hoffmann ◽  
O. Casals ◽  
A.E. Gad ◽  
L. Mayrhofer ◽  
C. Fàbrega ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Novel Approaches ◽  
Self Powered

scholarly journals From Gas Sensors to Biomimetic Artificial Noses

Chemosensors ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 32 ◽  
Author(s):  
Paolo Pelosi ◽  
Jiao Zhu ◽  
Wolfgang Knoll
Keyword(s):  
Gas Sensors ◽  
Olfactory System ◽  
Recent Literature ◽  
State Of The Art ◽  
Olfactory Receptors ◽  
Electronic Circuits ◽  
Gas Detectors ◽  
Extreme Sensitivity ◽  
Novel Approaches ◽  
Human Nose

Since the first attempts to mimic the human nose with artificial devices, a variety of sensors have been developed, ranging from simple inorganic and organic gas detectors to biosensing elements incorporating proteins of the biological olfactory system. In order to design a device able to mimic the human nose, two major issues still need to be addressed regarding the complexity of olfactory coding and the extreme sensitivity of the biological system. So far, only 50 of the approximately 300–400 functioning olfactory receptors have been de-orphanized, still a long way from breaking the human olfactory code. On the other hand, the exceptional sensitivity of the human nose is based on amplification mechanisms difficult to reproduce with electronic circuits, and perhaps novel approaches are required to address this issue. Here, we review the recent literature on chemical sensing both in biological systems and artificial devices, and try to establish the state-of-the-art towards the design of an electronic nose.

Solution-processed Au@rGO/GaN nanorods hybrid-structure for self-powered UV, visible photodetector and CO gas sensors

2019 ◽  
Vol 19 (8) ◽  
pp. 938-945 ◽  
Author(s):  
Maddaka Reddeppa ◽  
Sekhar Babu Mitta ◽  
T. Chandrakalavathi ◽  
Byung-Guon Park ◽  
G. Murali ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Hybrid Structure ◽  
Solution Processed ◽  
Uv Visible ◽  
Self Powered ◽  
Co Gas

Ultra-High Selective Gas Sensors: novel approaches and future developments

2014 ◽  
Author(s):  
M.W.G. Hoffmann ◽  
J.D. Prades ◽  
L. Mayrhofer ◽  
F. Ramirez ◽  
T.T. Jaervi ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Future Developments ◽  
Novel Approaches

Self-Powered Solar Diode Gas Sensors

2014 ◽  
Author(s):  
A.E. Gad ◽  
M.W.G. Hoffmann ◽  
J.D. Prades ◽  
F. Ramirez ◽  
R. Fiz ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Self Powered

Novel approaches for highly selective, room-temperature gas sensors based on atomically dispersed non-precious metals

2020 ◽  
Vol 8 (45) ◽  
pp. 23784-23794
Author(s):  
Renbing Tian ◽  
Shiyan Wang ◽  
Xuefeng Hu ◽  
Jian-Guo Zheng ◽  
Peng Ji ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Room Temperature ◽  
Precious Metals ◽  
Catalytic Reactions ◽  
Atom Economy ◽  
Novel Approaches

Atomically dispersed (AD) materials have incredible catalytic ability and offer atom economy with 100% metal utilization during catalytic reactions.

Emerging applications driving innovations in gas sensing

Sensor Review ◽  
2017 ◽  
Vol 37 (2) ◽  
pp. 118-126
Author(s):  
Robert Bogue
Keyword(s):  
Gas Sensors ◽  
Gas Sensing ◽  
Diverse Range ◽  
Content Type ◽  
Research Activities ◽  
Wide Range ◽  
Technical Details ◽  
Self Powered ◽  
Organic Gases ◽  
The Military

Purpose This paper aims to show how a range of new and emerging applications are driving technological innovations in gas sensing. Design/methodology/approach Following a short introduction, this paper first considers developments relating to the needs of the military and security sectors. Wearable gas sensors, energy harvesting and self-powered gas sensors are then discussed. The role of gas sensors in mobile phones is then considered, together with details of new developments in sensors for carbon-dioxide, particulates and formaldehyde. Finally, brief conclusions are drawn. Findings This paper shows that a technologically diverse range of gas sensors is being investigated and developed in response to a number of new and emerging requirements and applications. The gas sensors respond to numerous inorganic and organic gases and vapours over a wide range of application-specific concentrations and are based on a multitude of often innovative sensing techniques, technologies and materials. Originality/value This paper provides technical details of a selection of gas sensor research activities and product developments that reflect the needs of a range of new and emerging applications.

Novel Approaches to Low-Voltage Scanning Electron Microscopy

1990 ◽  
Vol 48 (1) ◽  
pp. 366-367
Author(s):  
Arthur V. Jones
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Low Voltage ◽  
Electron Optics ◽  
Current Interest ◽  
New Concepts ◽  
Opportune Time ◽  
Novel Approaches ◽  
Voltage Scanning ◽  
Scanning Electron

In comparison with the developers of other forms of instrumentation, scanning electron microscope manufacturers are among the most conservative of people. New concepts usually must wait many years before being exploited commercially. The field emission gun, developed by Albert Crewe and his coworkers in 1968 is only now becoming widely available in commercial instruments, while the innovative lens designs of Mulvey are still waiting to be commercially exploited. The associated electronics is still in general based on operating procedures which have changed little since the original microscopes of Oatley and his co-workers.The current interest in low-voltage scanning electron microscopy will, if sub-nanometer resolution is to be obtained in a useable instrument, lead to fundamental changes in the design of the electron optics. Perhaps this is an opportune time to consider other fundamental changes in scanning electron microscopy instrumentation.

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