Zobrazeno 1 - 10
of 68
pro vyhledávání: '"W.M. Sears"'
Publikováno v:
Sears, W M, MacKinnon, C D & Kraft, T M 2011, ' The effect of chain length on the dielectric and optical properties of oligothiophenes ', Synthetic Metals, vol. 161, no. 15-16, pp. 1566-1574 . https://doi.org/10.1016/j.synthmet.2011.05.020
The oligothiophene compounds T3-T7 inclusive have been synthesized by standard chemical procedures in order to measure the complex admittance versus frequency of their micro-crystalline powders as compressed into a co-axial tube capacitor. The result
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7acb43cce53c632d4a7d1f6d8e341d2
https://cris.vtt.fi/en/publications/ce031558-229f-4e88-92aa-f01845208239
https://cris.vtt.fi/en/publications/ce031558-229f-4e88-92aa-f01845208239
Autor:
W.M. Sears
Publikováno v:
Sensors and Actuators B: Chemical. 130:661-667
Commercial samples of bromine terminated polythiophene powder have been compacted to a mesoporous state in order to measure their electrical properties at different relative humidities by impedance spectroscopy, in this case the complex admittance ve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::673feb2095490c78667a25969d09c35c
https://doi.org/10.1016/j.snb.2007.10.028
https://doi.org/10.1016/j.snb.2007.10.028
Publikováno v:
Synthetic Metals. 158:50-58
A number of terthiophene derivatives have been synthesized by standard chemical procedures in order to measure the electrical properties of their micro-crystalline powders by impedance spectroscopy, in this case the complex admittance versus frequenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e53133a993c355097b19ec81cb88829
https://doi.org/10.1016/j.synthmet.2007.12.002
https://doi.org/10.1016/j.synthmet.2007.12.002
Autor:
W.M. Sears
Publikováno v:
Sensors and Actuators B: Chemical. 107:623-631
A pellet of bismuth iron molybdate, compressed to contain gold wire electrodes, was used to confirm protons or hydronium ions as the dominant carriers in a humid atmosphere, by DC polarization measurements. To do this a step voltage was applied to th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b0ea757ecb30fe2dc01ca5e470c22ac
https://doi.org/10.1016/j.snb.2004.11.029
https://doi.org/10.1016/j.snb.2004.11.029
Publikováno v:
Sensors and Actuators B: Chemical. 102:86-96
Mesoporous silicates are formed when organosilanes aggregate around octylamine micelles in aqueous solution, with the silicon part on the outside forming siloxane linkages that form the backbone of the structure. The octylamine is removed with an eth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47659267e19ed92f56f4367ffaa460db
https://doi.org/10.1016/j.snb.2003.11.020
https://doi.org/10.1016/j.snb.2003.11.020
The effect of oxygen stoichiometry on the humidity sensing characteristics of bismuth iron molybdate
Autor:
W.M. Sears
Publikováno v:
Sensors and Actuators B: Chemical. 67:161-172
The sensitivity of the four probe electrical conductance of compressed bismuth iron molybdate (Bi3FeO4(MoO4)2) powder to humid air was measured under conditions of varying degrees of chemical reduction at 24°C, 40°C and 60°C. It is expected that t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::090ef067bd333ccc722b6b67bda64d20
https://doi.org/10.1016/s0925-4005(00)00395-6
https://doi.org/10.1016/s0925-4005(00)00395-6
Autor:
W.M. Sears
Publikováno v:
Sensors and Actuators B: Chemical. 12:95-102
Conductance changes of sintered pellets of bismuth iron molybdate can be used to detect low concentrations of atmospheric reducing vapours such as ethanol. It is known that the conductance can be greatly affected by the stoichiometry (number of oxyge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18813d5cb4287590562ed8f3d34946b1
https://doi.org/10.1016/0925-4005(93)80004-u
https://doi.org/10.1016/0925-4005(93)80004-u
Publikováno v:
Sensors and Actuators B: Chemical. 2:283-289
The conductance versus time signatures of three types of thermally cycled gas sensors have been measured for a number of different reducing gases over a wide range of concentrations. A fast Fourier-transform data analysis technique is used to produce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dabd192135db2ecca9a7f0f92ea64d2d
https://doi.org/10.1016/0925-4005(90)80155-s
https://doi.org/10.1016/0925-4005(90)80155-s
Publikováno v:
Sensors and Actuators B: Chemical. 1:62-67
A new method of thermally cycling the Taguchi sensor #813 (Figaro Inc.) has been developed that greatly enhances its selectivity to propane over other gases. The sensor head of the TGS # 813 contains a tin oxide-coated ceramic tube connected to the o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37fe2114329cc2d5a1dd6c42de1bb81e
https://doi.org/10.1016/0925-4005(90)80173-w
https://doi.org/10.1016/0925-4005(90)80173-w
Autor:
S. Roy Morrison, W.M. Sears
Publikováno v:
The Journal of Physical Chemistry. 88:976-980
Mesures de la capture des trous par divers aldehydes, acides organiques et alcools sur des electrodes de CdSe recouvertes ou non de selenium. On montre que CH 2 O et (CHO) 2 sont oxydes en reagissant avec des trous photoproduits a partir de la bande
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f46583249a45cf735338fd064c96546d
https://doi.org/10.1021/j150649a026
https://doi.org/10.1021/j150649a026