A novel chemical sensor using CH3Si(OCH3)3 sol-gel thin film coated quartz-resonator microbalance

Nanto, Hidehito; Tsubakino, Shiro; Habara, Masaaki; Kondo, Kouichi; Morita, Takashi; Douguchi, Yoshiteru; Nakazumi, Hiroyuki; Waite, Ruth I.

doi:10.1016/s0925-4005(97)80008-1

Cited by 20 publications

(2 citation statements)

References 7 publications

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“…The output pattern of a sensor array with partially overlapping specificities is recognized by a neural network or multivariate analysis. Although there are a variety of gas sensors such as semiconductor gas sensors, − QCM gas sensors, − SAW (surface acoustic wave) gas sensors, − cantilever-type gas sensors, , FPW (flexural plate wave) gas sensors, conducting polymer gas sensors, − carbon black polymer gas sensors, − MOS (metal oxide semiconductor) gas sensors, − MS (mass spectrometry), − IMS (ion mobility spectrometry) high-speed gas chromatographs, optical gas sensors, − and electrochemical gas sensors, more information is required to achieve reliable discrimination. Thus, time constant as well as amplitude information has been studied to use an element of a pattern vector.…”

Section: 3 Extraction Of Time Constant331 Diffusion Model and Its Mod...mentioning

confidence: 99%

Chemical Sensing in Spatial/Temporal Domains

Nakamoto

Ishida

2008

Chem. Rev.

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Section: 3 Extraction Of Time Constant331 Diffusion Model and Its Mod...mentioning

confidence: 99%

Chemical Sensing in Spatial/Temporal Domains

Nakamoto

Ishida

2008

Chem. Rev.

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“…(6)(7)(8)(9)(10)(11)(12)(13) We have reported that a novel aroma-sensing method that uses the principal component analysis and neural-network pattern recognition of transient responses measured using synthetic-polymer-fi lm-coated quartz resonator gas sensors is useful in distinguishing the aromas of various types of coffee, wine and alcohol. (9,12,13) Recently, we have proposed that harmful gases such as ammonia, trimethylamine and triethylamine can be detected by measuring SPR using angle modulation. The technique of using a synthetic polymer fi lm as a molecular recognition membrane is applied in an SPR sensor.…”

Section: Introductionmentioning

confidence: 99%

Multichannel Odor Sensor Utilizing Surface Plasmon Resonance

2009

Sensors and Materials

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A multichannel odor sensor based on surface plasmon resonance (SPR) is demonstrated. Each thin fi lm of acrylic acid and N,N-dimethylacetamide as a molecular recognition membrane is deposited on a gold thin-film/glass substrate by plasma chemical vapor deposition (CVD). The sensor with an acrylic acid thin fi lm as the molecular recognition membrane exhibits an excellent selectivity for ammonia gas and the sensor with an N,N-dimethylacetamide thin fi lm exhibits an excellent selectivity for acetic acid gas. Two types of odor sensor that can simultaneously detect ammonia and acetic acid gases with excellent selectivities are prepared on one chip substrate, and their gas sensing characteristics are studied.

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Multi‐Channel Piezoelectric Crystal Gas Sensor with Principal Component Analysis for Organic Solvent Pollutants from Polymer Plants

Wang

Shih

2006

J Chinese Chemical Soc

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A multi-channel piezoelectric (PZ) quartz crystal gas sensor coated with various organic adsorbents and a home-made microcomputer interface for data processing have been fabricated for the detection of various organic vapors such as methanol, formic acid, propionaldehyde, carbon disulfide and N,N-dimethyl formamide which are generally used as solvents in the polymer industry. The home-made computer interface includes a digital Altera and an Intel-8255 data processing system. The Principal Component Analysis (PCA) method was employed to analyze the frequency response signals from each channel with different coating materials and was applied to select the appropriate coating materials for these organic vapors. A dataset for the multi-channel sensor with 29 PZ quartz crystals for these organic vapors was collected. Six representative coating materials such as C60-polyphenyl acetylene (C60-PPA), polyethylene glycol, Nafion, triphenyl phosphine, cryptand-22 and polyvinyl pyrrolidone were selected after comparing the correlation between the 29 coating materials and the first four principal component (PC) factors of the PCA analysis. The 5 organic vapors can be effectively distinguished clearly by the six-channel piezoelectric crystal sensor and which can be obviously found from the PCA Scores Map. Furthermore, different organic vapors tend to have distinguishing profile discrimination maps with the six channel PZ crystal sensor. The profile discrimination maps can be applied as fingerprints for these organic molecules. The six-channel PZ crystal sensor has quite good detection limits for these organic vapors. Furthermore, the multivariate linear regression (MLR) analysis was also employed to compute the concentrations of methanol and carbon disulfide in the mixture of organic vapors.

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A novel chemical sensor using CH3Si(OCH3)3 sol-gel thin film coated quartz-resonator microbalance

Cited by 20 publications

References 7 publications

Chemical Sensing in Spatial/Temporal Domains

Chemical Sensing in Spatial/Temporal Domains

Multichannel Odor Sensor Utilizing Surface Plasmon Resonance

Multi‐Channel Piezoelectric Crystal Gas Sensor with Principal Component Analysis for Organic Solvent Pollutants from Polymer Plants

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