Electrokinetic Scanning Probe. Issue 5 (29th December 2019)

• Record Type: Journal Article
• Authors: Ostromohov, Nadya; Rofman, Baruch; Bercovici, Moran; Kaigala, Govind
• Is Part Of: Small. Volume 16:Issue 5(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-12-29
• Subjects: electroosmotic flow -- electrophoresis -- electroosmotic flow (EOF) -- scanning probes -- surface analysis; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201904268
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: The theoretical analysis and experimental demonstration of a new concept are presented for a non‐contact scanning probe, in which transport of fluid and molecules is controlled by electric fields. The electrokinetic scanning probe (ESP) enables local chemical and biochemical interactions with surfaces in liquid environments. The physical mechanism and design criteria for such a probe are presented, and its compatibility with a wide range of processing solutions and pH values are demonstrated. The applicability of the probe is shown for surface patterning in conjunction with localized heating and 250‐fold analyte stacking. Abstract : The non‐contact electrokinetic scanning probe has the ability to locally deliver and extract ionic species and fluids to and from substrates using a wide range of liquid‐processing solutions in conjunction with localized heating and analyte stacking, which opens the door to a range of new applications in deposition and extraction of biomolecules.