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 Title: |
US5151110:
Molecular sieve sensors for selective detection at the nanogram level
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Bein, Thomas; Albuquerque, NM
Brown, Kelly D.; Albuquerque, NM
Frye, Gregory C.; Albuquerque, NM
Brinker, Charles J.; Albuquerque, NM
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| Assignee: |
University of New Mexico, Albuquerque, NM
other patents from UNIVERSITY OF NEW MEXICO (599775) (approx. 180)
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| Published / Filed: |
1992-09-29
/ 1990-09-11
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| Application Number: |
US1990000580373
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| IPC Code: |
Advanced:
B01D 53/02;
B01D 53/04;
G01N 27/00;
G01N 29/02;
G01N 30/00;
Core:
more...
IPC-7:
B01D 53/04;
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| ECLA Code: |
B01D53/02; G01N27/00B1B; G01N29/02F; S01N30/00; L01D253/106; L01D253/108; L01D253/110; L01D253/202; L01D253/304; L01D257/502; L01D257/702; S01N291/025G; S01N291/042C; S01N291/042E; S01N291/042H;
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| U.S. Class: |
Current:
095/140;
095/088;
095/143;
096/101;
096/154;
Original:
055/075;
055/067;
055/208;
055/386;
055/389;
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| Field of Search: |
055/208,270,274,389,197,386,18-21,74,75
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| Government Interest: |
The U.S. government has rights in this invention pursuant to Contract No. DE-AC-04-76DPO0789.
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| Priority Number: |
| 1990-09-11 |
US1990000580373 |
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| Abstract: |
The invention relates to a selective chemical sensor for selective detection of chemical entities even at the nanogram level. The invention further relates to methods of using the sensor. The sensor comprises: (a) a piezoelectric substrate capable of detecting mass changes resulting from adsorption of material thereon; and (b) a coating applied to the substrate, which selectively sorbs chemical entities of a size smaller than a preselected magnitude.
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| Attorney, Agent or Firm: |
Millen, White & Zelano ;
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| Primary / Asst. Examiners: |
Spitzer, Robert;
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| INPADOC Legal Status: |
Show legal status actions
Family Legal Status Report
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| Family: |
Show 3 known family members
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First Claim:
Show all 12 claims |
What is claimed is:
1. A method of selectively detecting the presence of a chemical entity within an environment comprising placing a selective chemical sensor in said environment and detecting mass changes of the piezoelectric surface resulting from sorption of material thereon, said chemical sensor comprising:
- (a) a piezoelectric substrate capable of detecting mass changes resulting from sorption of material thereon; and
- (b) a coating applied to said substrate, which selectively sorbs chemical entities of a size less than a preselected magnitude, wherein the chemical entity to be detected is CO or a hydrocarbon,
- wherein element (a) is a surface acoustic wave (SAW) device or a quartz crystal microbalance (QCM) device,
- wherein element (b) is a film containing zeolite crystals, wherein the pores within said zeolite crystals provide molecule sieving capability, and
- wherein said film is an inorganic silica matrix having zeolite crystals embedded therein.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 54 U.S. patent(s) that reference this one
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| Foreign References: |
None
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| Other References: |
Bein et al., "Molecular Sieve Sensors for Selective Detection at the Nanogram Level," Journal of the American Chemical Society, vol. 111, No. 19, pp. 7640-7641, Sep. 13, 1989.
(2 pages)
Cited by 10 patents
Lynch (editor), CRC Handbook of Materials Science, vol. 111, Nonmetallic Materials and Applications, CRC Press, Inc.: Boca Raton, FL, pp. 198-200 (1975).
Ku et al., Electrical Properties of Polymers, Hanser Publishers, Munich, pp. 7-17 (1987).
Ricco et al., "Determination of BET Surface Areas of Porous Thin Films Using Surface Acoustic Wave Devices," Langmuir, 5, pp. 273-276 (1989).
(4 pages)
Cited by 3 patents
Brinker et al., ed., "Better Ceramics Through Chemistry 111", Mat. Res. Soc. Symp. Proc., vol. 121, Materials Research Soc., pp. v-xiii Apr. 5-8, 1988.
Carey et al., "Multicomponent Analysis Using an Array of Piezoelectric Crystal Sensors," Analytical Chem., vol. 59, pp. 1529-1534 (1987).
(6 pages)
Cited by 10 patents
Carey et al., "Monitoring a Dryer Operation Using An Array of Piezoelectric Crystals", Analytical Chem. vol. 60, pp. 541-544 (1988).
(4 pages)
Cited by 6 patents
Frye et al., "Characterization of the Surface Area and Porosity of Sol-Gel Films Using SAW Devices", Mat. Res. Soc. Symp. Proc., vol. 121, Materials Research Company, pp. 349-354 (1988).
J. Am. Chem. Soc., 111, pp. 7640-7641 (1989).
(2 pages)
Cited by 10 patents
C&EN, Sep. 25, 1989, p. 32.
MRS Bulletin, May 1990, pp. 10-11.
Chemecology, vol. 19, No. 2, Mar. 1990, p. 5.
C&EN, Jan. 29, 1990, pp. 24-26.
"Advances in Sensor Technology Promise Reduce Risk From Toxic Substrates", News Release, Materials Research Society, pp. 1-5 (Apr. 1990).
Inside R&D, vol. 19, No. 16, Apr. 18, 1990.
Browne, "Gains Reported in Detecting Toxic Substances", The New York Times Science, Dec. 26, 1989.
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