The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2016
Filed:
Aug. 11, 2011
Patrick Unwin, Birdingbury, GB;
Neil Ebejer, St. Julians, GB;
Patrick Unwin, Birdingbury, GB;
Neil Ebejer, St. Julians, GB;
The University of Warwick, Coventry West Midlands, GB;
Abstract
Apparatus comprises a pipet comprising first and second channels separated by a septum and having a tip at which each of the first and second channels is open; an electrolyte solution contained within both the first and second channels of the pipet; a first electrode extending into the electrolyte in the first channel of the pipet; a second electrode extending into the electrolyte in the second channel of the pipet; means for applying a potential difference between the first and second electrodes; means for measuring alternating current components of a current flowing to or from the first electrode; means for applying an oscillatory perturbation to the pipet; and means responsive to the alternating current measured to be flowing to or from the first electrode to adjust a position of the pipet such as to control a separation between the tip of the pipet and a surface of interest.