Zobrazeno 1 - 10
of 58
pro vyhledávání: '"E. M. Logothetis"'
Autor:
E. M. Logothetis, Z Zhou, D. R. Brown, M. Zanini, Fernando H. Garzon, Rangachary Mukundan, Jaco Visser, Eric L. Brosha
Publikováno v:
Sensors and Actuators B: Chemical. 69:171-182
We have demonstrated a new type of mixed potential, zirconia-based sensor that utilizes dense, thin films of either La–Sr–Co–O or La–Co–O perovskite transition metal oxide vs. a Au counter electrode to generate an EMF that is proportional t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21d5e8c13d745da2c3aad371844470c5
https://doi.org/10.1016/s0925-4005(00)00543-8
https://doi.org/10.1016/s0925-4005(00)00543-8
Autor:
A.D. Brailsford, E. M. Logothetis
Publikováno v:
Sensors and Actuators B: Chemical. 52:195-203
Based on the insight gained from the analysis of a previously developed model of metal oxide gas sensors and its comparison with results of experimental studies of automotive ZrO 2 oxygen sensors, this paper discusses our present understanding of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40e37b52fde40704c55eb88b321914a4
https://doi.org/10.1016/s0925-4005(98)00273-1
https://doi.org/10.1016/s0925-4005(98)00273-1
Publikováno v:
Sensors and Actuators B: Chemical. 49:93-100
A first principles model is described for the operation of electrochemical type sensors designed to measure combustibles in air. It is based on the general principles presented in previous publications (A.D. Brailsford, E.M. Logothetis, Sens. Actuato
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55b25df3a13a24e4a49e0eaf4ab4e755
https://doi.org/10.1016/s0925-4005(98)00093-8
https://doi.org/10.1016/s0925-4005(98)00093-8
Publikováno v:
Sensors and Actuators B: Chemical. 45:27-33
A model for the transient response of a mass-transfer limited electrochemical gas sensor is developed to describe the sensor behavior in the presence of a mixture of oxygen and one oxidizable (and possibly oxygenated) generic hydrocarbon, C l H m O n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6260c06cc6b545159924dee14b8953dd
https://doi.org/10.1016/s0925-4005(97)00262-1
https://doi.org/10.1016/s0925-4005(97)00262-1
Publikováno v:
Sensors and Actuators B: Chemical. 44:321-326
Zirconia oxygen sensors are used extensively to monitor the air-to-fuel ratio of internal combustion engines. The basic physical and chemical processes involved in the sensing operation have been examined in detail to develop a first-principles model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af065b44f1f81b22d993f5e9d9cc0b75
https://doi.org/10.1016/s0925-4005(97)00137-8
https://doi.org/10.1016/s0925-4005(97)00137-8
Publikováno v:
Sensors and Actuators B: Chemical. 42:15-26
The emf of commercial automotive zirconia oxygen sensors exposed to O 2 /CO/CO 2 /N 2 or O 2 /H 2 /H 2 O/N 2 gas mixtures was measured as a function of R ′=(2P O 2 /P CO ) or (2P O 2 /P H 2 ) at several temperatures. A step-like transition from hig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69588cc8bd696d232994a8ca142051d1
https://doi.org/10.1016/s0925-4005(97)80307-3
https://doi.org/10.1016/s0925-4005(97)80307-3
Publikováno v:
Sensors and Actuators B: Chemical. 36:392-397
We present an extension of the first-principles model for the steady state response of electrochemical (e.g. zirconia) gas sensors. In earlier work, it was assumed that only one electrochemical reaction couples the electrical and the chemical parts o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea459977df3065272f7314506b43605b
https://doi.org/10.1016/s0925-4005(97)80103-7
https://doi.org/10.1016/s0925-4005(97)80103-7
Publikováno v:
Sensors and Actuators B: Chemical. 34:407-411
A first-principles model of the operation of an electrochemical metal oxide gas sensor had been previously used to analyze the response when the sensor was exposed to a simple gas mixture (e.g. O 2 /CO/CO 2 ). Here, the model is extended to study the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b288d790d49e5dd995e945e3428efab8
https://doi.org/10.1016/s0925-4005(96)01850-3
https://doi.org/10.1016/s0925-4005(96)01850-3
Publikováno v:
Sensors and Actuators B: Chemical. 28:139-142
Platinum loading and metal dispersion have been measured in the outer, sensing electrodes of four commercial heated exhaust-gas oxygen (HEGO) sensors which have previously been thoroughly characterized. The Pt dispersion is determined by methanation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00ce976c317f29d4f6a0ce7274d26362
https://doi.org/10.1016/0925-4005(95)80039-5
https://doi.org/10.1016/0925-4005(95)80039-5
Autor:
O.W. Bynum, M. Zanini, L. Brewer, R.E. Soltis, Jaco Visser, D. W. Hoffman, E. M. Logothetis, M.A. Richard, A. Kovalchuk, Lajos Rimai, U. Bonne
Publikováno v:
Sensors and Actuators A: Physical. 48:187-192
A differential catalytic microcalorimeter has been fabricated using silicon micromachining techniques. The steady-state device response to different combustible gases was investigated in the laboratory as a function of concentration of the combustibl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82550f09b2c8113eea636c97f13b0fa4
https://doi.org/10.1016/0924-4247(95)01000-9
https://doi.org/10.1016/0924-4247(95)01000-9