# US 7,745,206 B2 · AFM for simultaneous recognition of multiple factors

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,745,206 B2
- Document ID: US7745206B2
- Status: Granted
- Kind: B2
- Application number: 12/022,072
- Filed: 2008-01-29
- Published: 2008-09-04
- Granted: 2010-06-29
- Earliest claimed: 2007-01-29
- Assignees: Arizona State University
- Inventors: Hongda Wang; Stuart Lindsay
- Web page: https://patentgrep.com/patent/US7745206B2

## CPC

- G01Q 60/42: Functionalisation
- G01Q 30/04: Display or data processing devices
- G01Q: SCANNING-PROBE TECHNIQUES OR APPARATUS; APPLICATIONS OF SCANNING-PROBE TECHNIQUES, e.g. SCANNING PROBE MICROSCOPY [SPM]

## Abstract

An atomic force microscope and a method for detecting interactions between a probe and two or more sensed agents on a scanned surface and determining the relative location of two or more sensed agents is provided. The microscope has a scanning probe with a tip that is sensitive to two or more sensed agents on said scanned surface; two or more sensing agents tethered to the tip of the probe; and a device for recording the displacement of said probe tip as a function of time, topographic images, and the spatial location of interactions between said probe and the two or more sensed agents on said surface.

## Claims

### Claim 1

An atomic force microscope for detecting interactions between a probe and first and second sensed agents on a scanned surface, said microscope comprising:
a scanning probe having a tip that is sensitive to a property of said scanned surface;
first and second sensing agents tethered to the tip of the probe, said first and second sensing agents being sensitive to said first and second sensed agents, respectively, said first sensing agent being different from said second sensing agent; and
means for recording a displacement of said probe tip as a function of time, recording topographic images, and recording the spatial location of interactions between said probe and said first and second sensed agents on said scanned surface.

### Claim 2 (depends on 1)

The atomic force microscope of claim 1, wherein the two or more sensing agents are biomolecules.

### Claim 3 (depends on 2)

The atomic force microscope of claim 2, wherein the biomolecules are selected from the group consisting of: an antibody, a polypeptide, a nucleic acid, a lipid, a carbohydrate, or a ligand.

### Claim 4 (depends on 1)

The atomic force microscope of claim 1, wherein at least one of the two or more sensing agents is an aptamer.

### Claim 5 (depends on 1)

The atomic force microscope of claim 1, wherein at least one of the two or more sensing agents is an antibody.

### Claim 6 (depends on 1)

The atomic force microscope of claim 1, wherein at least one of the two or more sensing agents is a lectin.

### Claim 7 (depends on 1)

The atomic force microscope of claim 1, wherein said probe is adapted to oscillate with a mechanical Q factor equal to or less than 20.