Invention Grant
- Patent Title: DNA sequencing using multiple metal layer structure with different organic coatings forming different transient bondings to DNA
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Application No.: US15349285Application Date: 2016-11-11
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Publication No.: US10267784B2Publication Date: 2019-04-23
- Inventor: Ali Afzali-Ardakani , Stefan Harrer , Binquan Luan , Hongbo Peng , Stephen M. Rossnagel , Ajay K. Royyuru , Gustavo A. Stolovitzky , Philip S. Waggoner
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Agent Vazken Alexanian
- Main IPC: G01N27/447
- IPC: G01N27/447 ; G01N33/487 ; C12Q1/68 ; B82Y15/00 ; C12Q1/6869

Abstract:
A nanodevice includes a reservoir filled with conductive fluid and a membrane separating the reservoir. A nanopore is formed through the membrane having electrode layers separated by insulating layers. A certain electrode layer has a first type of organic coating and a pair of electrode layers has a second type. The first type of organic coating forms a motion control transient bond to a molecule in the nanopore for motion control, and the second type forms first and second transient bonds to different bonding sites of a base of the molecule. When a voltage is applied to the pair of electrode layers a tunneling current is generated by the base in the nanopore, and the tunneling current travels via the first and second transient bonds formed to be measured as a current signature for distinguishing the base. The motion control transient bond is stronger than first and second transient bonds.
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