Title:
光・電気濡れに基づくマイクロフルイディクスの光学的駆動のための装置と方法
Document Type and Number:
Japanese Patent JP4614221
Kind Code:
B2
Abstract:
The invention is related to methods and apparatus that manipulate droplets in a microfluidic environment. Advantageously, embodiments of the invention manipulate droplets by controlling the electro-wetting characteristics of a surface with light, thereby inducing a gradient in the surface tension of a droplet. The gradient in the surface tension propels the droplet by capillary force. A variety of operations, such as transporting, joining, cutting, and creating can be performed. Advantageously, embodiments of the invention obviate the need to create a relatively large and complex control electrode array. A plurality of photoconductive cells or a layer of a photoconductive material selectively couples an electrode carrying an electrical bias to otherwise floating conductive cells in response to a beam of light. The electrical bias applied to the conductive cell generates a localized electric field, which can change the contact angle of the droplet, thereby permitting the droplet to be propelled.
Inventors:
WU,Ming,C.
Butterfly, pay wai
Butterfly, pay wai
Application Number:
JP2004525986A
Publication Date:
January 19, 2011
Filing Date:
May 30, 2003
Export Citation:
Assignee:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
International Classes:
B01J19/12; G01N37/00; B01L3/00; F04B19/00; G01N35/10
Domestic Patent References:
| JP61501723A | ||||
| JP2279343A | ||||
| JP5169669A | ||||
| JP8095356A | ||||
| JP2002507765A |
Attorney, Agent or Firm:
Sakaki Morishita