Manipulating the size of liquid droplets in digital microfluidics
US8936708B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2013 |
| Grant date | Jan 20, 2015 |
| Priority date | — |
| Expiry date | Jul 19, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/0475
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Liquid droplet manipulation instrument has electrode array for inducing movement of a droplet by electrowetting, substrate supporting the array and control with electrode selector connected to a voltage control. The selector selects each electrode and provides each with a controlled voltage. The control includes central processing unit for providing the selected electrode with an individual voltage pulse which is a drive voltage or a ground voltage or a stop voltage. The control defines a path for movement of a liquid portion of a larger volume that covers more than one electrode by the simultaneous selection of a group of two or more subsequent drive electrodes and to provide each selected drive electrode with a drive voltage pulse along the path. The control simultaneously provides a group of two or more electrodes adjacent to or identical with the pulsed drive electrodes, with a ground or stop voltage pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.