Multiaxis sensing using metal organic frameworks

Patent metadata

Field	Value
Publication number	US-9546887-B1
Application number	US-201414573990-A
Country	US
Kind code	B1
Filing date	Dec 17, 2014
Priority date	Dec 19, 2013
Publication date	Jan 17, 2017
Grant date	Jan 17, 2017

Abstract

A sensor device including a sensor substrate; and a thin film comprising a porous metal organic framework (MOF) on the substrate that presents more than one transduction mechanism when exposed to an analyte. A method including exposing a porous metal organic framework (MOF) on a substrate to an analyte; and identifying more than one transduction mechanism in response to the exposure to the analyte.

First claim

What is claimed is:

1. A sensor device comprising:
a sensor substrate; and
a thin film comprising a porous organic metal framework (MOF) on the sensor substrate that is configured to present more than one transduction mechanism when exposed to an analyte, which thereby enables multi-axis sensing.

2. The sensor device of claim 1 , wherein the more than one transduction mechanism comprises more than one of electrical conductivity, strain, acoustic modification, optical absorption or optical emission.

3. The sensor device of claim 1 , wherein the device comprises a surface acoustic wave sensor device and the sensor substrate is a piezoelectric substrate.

4. The sensor device of claim 3 , wherein a first of the more than one transduction mechanism is an acoustic modification and a second of the more than one transduction mechanism is optical absorption.

5. The sensor device of claim 1 , wherein the sensor substrate is a cantilever beam.

6. The sensor device of claim 5 , wherein one of the more than one transduction mechanism is strain on a material of the cantilever beam.

7. The sensor device of claim 6 , wherein one of the more than one transduction mechanism is optical absorption.

8. The sensor device of claim 1 , wherein one of the more than one transduction mechanism is a change in an electrical property.

9. The sensor device of claim 1 , wherein the MOF is modified with a guest species.

10. A method comprising:
exposing a porous metal organic framework (MOF) on a substrate to an analyte; and
identifying more than one transduction mechanism in response to the exposure to the analyte, thereby enabling multi-axis sensing.

11. The method of claim 10 , wherein the more than one transduction mechanism comprises more than one of electrical conductivity, strain, acoustic modification, optical absorption or optical emission.

12. The method of claim 10 , wherein the substrate is a piezoelectric substrate of a surface acoustic wave sensor.

13. The method of claim 12 , wherein a first of the more than one transduction mechanism is an acoustic modification and a second of the more than one transduction mechanism is optical absorption.

14. The method of claim 10 , wherein the substrate is a cantilever beam.

15. The method of claim 14 , wherein one of the more than one transduction mechanism is strain on a material of the cantilever beam.

16. The method of claim 10 , wherein one of the more than one transduction mechanism is optical absorption.

17. The method of claim 10 , wherein one of the more than one transduction mechanism is a change in an electrical property.

18. The method of claim 10 , wherein the MOF is modified with a guest species.

Assignees

• Sandia Corp

Inventors

• Talin Albert Alec
• Allendorf Mark D
• Leonard Francois
• STAVILA Vitalie

Classifications

• B01D2253/204

  Metal organic frameworks (MOF's) · CPC title

• G01N2291/02809

  Concentration of a compound, e.g. measured by a surface mass change · CPC title

• G01N27/125

  Composition of the body, e.g. the composition of its sensitive layer · CPC title

• G01N33/0027

  concerning the detector · CPC title

• B01J20/226

  Coordination polymers, e.g. metal-organic frameworks [MOF], zeolitic imidazolate frameworks [ZIF] (preparation of metal complexes containing carboxylic acid moieties C07C51/418; MOF's per se C07F) · CPC title