Coating processes – Electrical product produced – Piezoelectric properties
Reexamination Certificate
2011-01-11
2011-01-11
Barr, Michael (Department: 1711)
Coating processes
Electrical product produced
Piezoelectric properties
C422S083000
Reexamination Certificate
active
07867552
ABSTRACT:
Methods can be adapted for design of a sensitive monolayer for detection of hydrogen sulphide at room temperature with SAW/BAW devices. The sensitive monolayer can be synthesized based on chemical compounds, which belongs to a class of thiacalix[n]arenas, mercapto halides, mercapto alcohols and chloromethylated thiacalix[n]arenas. The sensitive monolayer can be directly immobilized or anchored at the surface of a piezoelectric quartz substrate in a covalently bonded manner by means of direct printing process. The piezoelectric quartz substrate can be activated in basic medium or in acid medium before the immobilization of the sensitive monolayer in order to increase the population of OH groups. Thus, the synthesized sensitive monolayer exhibits a high site density, fast response and long-term stability for H2S sensing.
REFERENCES:
patent: 6951690 (2005-10-01), Katz et al.
patent: 2008/0229831 (2008-09-01), Serban et al.
Sensing CO2 in a Chemically Modified Porous Silicon Film; M. Rocchia, E. Garrone, F. Geobaldo, L. Boarino, M.J. Sailor; Phys. Stat. Sol. (2) 197, No. 2, 365-369 (2003)/DOI 10, 1002/pssa.200306526.
Covalently Anchored Supramolecular Monolayers on Quartz Surfaces for Use in SAW Sensors; P. A. Lieberzeit, W. Greibl, H. Stathopulos, F.L. Dickert, G. Fisherauer, W. Bulst; Elsevier Science, Sensors and Actuators B 113 (2006) 677-683.
The First Single-Step Immobilization of a Calix-[4]-arene onto the Surface of Silica; A. Katz, P. D. Costa, A.C.P. Lam, J. M. Notestein; American Chemical Society, Chem. Mater. 2002, 14, 3364-3368.
Surface Acoustic Wave Microsensors Based on Cyclodextrin Coatings; D. Li, M. Ma; Elsevier Science, Sensors and Actuators B 69 (2000) 75-84.
Recent Advances in the Functionalizations of The Upper Rims of Thiacalix[4]Arenes. A Review.; S. Parola, C. Desroches; Collect. Czech. Chem. Commun. (vol. 69 (2004).
Upper Rim Substituted Thiacalix[4]Arenes; O. Kasyan, D. Swierczynski, A. Drapailo, K. Suwinska, J. Lipkowski, V. Kalchenko; Science Direct, Tetrahedron Letters 44 (2003) 7167-7170.
Cobianu Cornel P.
Costea Stefan-Dan
Dumitru Viorel-Georgel
Serban Bogdan-Catalin
Varachiu Nicolae
Barr Michael
Fredrick Kris T.
Honeywell International , Inc.
Lopez Kermit D.
Ortiz Luis M.
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