scholarly journals Highly Sensitive Multi-Channel IDC Sensor Array for Low Concentration Taste Detection

Sensors ◽  
2015 ◽  
Vol 15 (6) ◽  
pp. 13201-13221 ◽  
Author(s):  
Md. Rajibur Khan ◽  
Shin-Won Kang
Keyword(s):  
Sensor Array ◽  
Low Concentration ◽  
Highly Sensitive ◽  
Taste Detection

scholarly journals Highly Sensitive p + n Metal Oxide Sensor Array for Low-Concentration Gas Detection

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2710
Author(s):  
Jianghua Luo ◽  
Yishan Jiang ◽  
Feng Xiao ◽  
Xin Zhao ◽  
Zheng Xie
Keyword(s):  
Electron Microscopy ◽  
Metal Oxide ◽  
Gas Sensors ◽  
Sensor Array ◽  
Gas Sensing ◽  
Sensor Arrays ◽  
Low Concentration ◽  
Highly Sensitive ◽  
Doped Zno ◽  
P Type

Nowadays, despite the easy fabrication and low cost of metal oxide gas sensors, it is still challenging for them to detect gases at low concentrations. In this study, resistance-matched p-type Cu2O and n-type Ga-doped ZnO, as well as p-type CdO/LaFeO3 and n-type CdO/Sn-doped ZnO sensors were prepared and integrated into p + n sensor arrays to enhance their gas-sensing performance. The materials were characterized by scanning electron microscopy, transmittance electron microscopy, and X-ray diffractometry, and gas-sensing properties were measured using ethanol and acetone as probes. The results showed that compared with individual gas sensors, the response of the sensor array was greatly enhanced and similar to the gas response product of the p- and n-type gas sensors. Specifically, the highly sensitive CdO/LaFeO3 and CdO/Sn-ZnO sensor array had a high response of 21 to 1 ppm ethanol and 14 to 1 ppm acetone, with detection limits of <0.1 ppm. The results show the effect of sensor array integration by matching the two sensor resistances, facilitating the detection of gas at a low concentration.

Highly sensitive free-base-porphyrin-based thin-film optical waveguide sensor for detection of low concentration NO2 gas at ambient temperature

2018 ◽  
Vol 53 (15) ◽  
pp. 10822-10834 ◽  
Author(s):  
Hannikezi Abudukeremu ◽  
Nuerguli Kari ◽  
Yuan Zhang ◽  
Jiaming Wang ◽  
Patima Nizamidin ◽  
...  
Keyword(s):  
Thin Film ◽  
Ambient Temperature ◽  
Optical Waveguide ◽  
Free Base ◽  
Low Concentration ◽  
Highly Sensitive ◽  
Waveguide Sensor

A phthalocyanine sensor array based on sensitivity and current changes for highly sensitive identification of three toxic gases at ppb levels

2020 ◽  
Vol 44 (31) ◽  
pp. 13240-13248
Author(s):  
Xueqian Duan ◽  
Yingze Zhang ◽  
Haoyuan Wang ◽  
Fangna Dai ◽  
Guangwu Yang ◽  
...  
Keyword(s):  
Sensor Array ◽  
Toxic Gases ◽  
Change Direction ◽  
Highly Sensitive ◽  
Wide Range ◽  
Current Change ◽  
Two Parameters

The first phthalocyanine-based sensor array by the combination of two parameters, namely current change direction and sensitivity, for accurate discrimination and wide range of detection of three toxic gases at ppb levels.

Highly Sensitive Pressure Sensor Array With Photothermally Reduced Graphene Oxide

2015 ◽  
Vol 36 (2) ◽  
pp. 180-182 ◽  
Author(s):  
Rouzbeh Kazemzadeh ◽  
Kimball Andersen ◽  
Lazarus Motha ◽  
Woo Soo Kim
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Pressure Sensor ◽  
Sensor Array ◽  
Reduced Graphene ◽  
Highly Sensitive ◽  
Sensitive Pressure

Highly Sensitive Detection of Inorganic Contamination

2009 ◽  
Vol 145-146 ◽  
pp. 101-104 ◽  
Author(s):  
Burkhard Beckhoff ◽  
Andreas Nutsch ◽  
Roswitha Altmann ◽  
G. Borionetti ◽  
C. Pello ◽  
...  
Keyword(s):  
Detection Limits ◽  
Analytical Techniques ◽  
Total Reflection ◽  
Inorganic Contaminants ◽  
Research Activity ◽  
Joint Research ◽  
X Ray ◽  
Low Concentration ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

As the detection of inorganic contaminants is of steadily increasing importance for the improvement of yields in microelectronic applications, the aim of one of the joint research activity within the European Integrated Activity of Excellence and Networking for Nano- and Micro-Electronics Analysis (ANNA, site: www.ANNA-i3.org) is the development and assessment of new methodolo¬gies and metrologies for the detection of low concentration inorganic contaminants in silicon and in novel materials. A main objective consist in the benchmarking of various analytical techniques avail¬able in the laboratories of the participating ANNA partners, including the improvement of the res¬pective detection limits as well as the quantitation reliablity of selected analytical techniques such as total-reflection x-ray fluorescence (TXRF) analysis.

scholarly journals Fiber-optic multi-sensor array for detection of low concentration volatile organic compounds

2013 ◽  
Vol 21 (17) ◽  
pp. 20119 ◽  
Author(s):  
Md. Rajibur Rahaman Khan ◽  
Byoung-Ho Kang ◽  
Sang-Won Lee ◽  
Su-Hwan Kim ◽  
Se-Hyuk Yeom ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Sensor Array ◽  
Fiber Optic ◽  
Low Concentration ◽  
Volatile Organic

Highly sensitive NO2 sensor array based on undecorated single-walled carbon nanotube monolayer junctions

2008 ◽  
Vol 93 (11) ◽  
pp. 113111 ◽  
Author(s):  
Sunglyul Maeng ◽  
Seungeon Moon ◽  
Sanghyeob Kim ◽  
Hong-Yeol Lee ◽  
So-Jeong Park ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Sensor Array ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Highly Sensitive ◽  
No2 Sensor

scholarly journals A Soft Pressure Sensor Array Based on a Conducting Nanomembrane

Micromachines ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 933
Author(s):  
Daekwang Jung ◽  
Kyumin Kang ◽  
Hyunjin Jung ◽  
Duhwan Seong ◽  
Soojung An ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
High Performance ◽  
Sensor Array ◽  
Pressure Sensors ◽  
Strain Range ◽  
High Sensitivity ◽  
Critical Issue ◽  
Mechanical Stimuli ◽  
Highly Sensitive ◽  
Accumulated Strain

Although skin-like pressure sensors exhibit high sensitivity with a high performance over a wide area, they have limitations owing to the critical issue of being linear only in a narrow strain range. Various strategies have been proposed to improve the performance of soft pressure sensors, but such a nonlinearity issue still exists and the sensors are only effective within a very narrow strain range. Herein, we fabricated a highly sensitive multi-channel pressure sensor array by using a simple thermal evaporation process of conducting nanomembranes onto a stretchable substrate. A rigid-island structure capable of dissipating accumulated strain energy induced by external mechanical stimuli was adopted for the sensor. The performance of the sensor was precisely controlled by optimizing the thickness of the stretchable substrate and the number of serpentines of an Au membrane. The fabricated sensor exhibited a sensitivity of 0.675 kPa−1 in the broad pressure range of 2.3–50 kPa with linearity (~0.990), and good stability (>300 Cycles). Finally, we successfully demonstrated a mapping of pressure distribution.

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