Microcantilever sensors with chemically selective coatings of ionic liquids

Eunhyea Chung; Nickolay Lavrik; Panos Datskos; Joanna Mcfarlane; Sheng Dai; Costas Tsouris

doi:10.1002/aic.11293

Microcantilever sensors with chemically selective coatings of ionic liquids

AIChE Journal ◽

10.1002/aic.11293 ◽

2007 ◽

Vol 53 (10) ◽

pp. 2726-2731 ◽

Cited By ~ 2

Author(s):

Eunhyea Chung ◽

Nickolay Lavrik ◽

Panos Datskos ◽

Joanna Mcfarlane ◽

Sheng Dai ◽

...

Keyword(s):

Ionic Liquids ◽

Microcantilever Sensors ◽

Chemically Selective

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Functionalization of Microcantilever Sensors Using Inkjet Drop-on-Demand

First International Conference on Integration and Commercialization of Micro and Nanosystems, Parts A and B ◽

10.1115/mnc2007-21216 ◽

2007 ◽

Cited By ~ 1

Author(s):

Nicholas J. Post ◽

George T.-C. Chiu

Keyword(s):

Functional Layer ◽

Biochemical Sensors ◽

Microcantilever Sensors ◽

On Demand ◽

Drop On Demand ◽

Microcantilever Arrays ◽

Drive Pulse ◽

Analyte Detection ◽

Chemically Selective

Chemical and biochemical sensors based on microcantilever arrays have emerged as new platforms for sensitive analyte detection. A critical step in the manufacture of microcantilever sensors is the functionalization process, where a chemically selective layer is deposited onto the surface of the cantilever. Inkjet drop-on-demand has been recognized as a befitting technology for depositing these layers because of the ability to repeatedly deposit precise amounts of fluid. This paper presents experimental results of applying inkjet printing to functionalize microcantilever sensors. Methods for tuning inkjet drive pulse are presented along with characterization of drop displacement. Strategies for printing the functional layer are presented and system capabilities are demonstrated by depositing black ink onto cantilevers.

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Atom-probe analysis of the solid-liquid interface

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100139755 ◽

1995 ◽

Vol 53 ◽

pp. 676-677

Author(s):

J.A. Panitz

Keyword(s):

Molecular Level ◽

Selective Adsorption ◽

Electronic Devices ◽

Atom Probe ◽

Chemical Agent ◽

Hostile Environment ◽

Solid Interface ◽

Solid Liquid Interface ◽

Solid Liquid ◽

Chemically Selective

The first few atomic layers of a solid can form a barrier between its interior and an often hostile environment. Although adsorption at the vacuum-solid interface has been studied in great detail, little is known about adsorption at the liquid-solid interface. Adsorption at a liquid-solid interface is of intrinsic interest, and is of technological importance because it provides a way to coat a surface with monolayer or multilayer structures. A pinhole free monolayer (with a reasonable dielectric constant) could lead to the development of nanoscale capacitors with unique characteristics and lithographic resists that surpass the resolution of their conventional counterparts. Chemically selective adsorption is of particular interest because it can be used to passivate a surface from external modification or change the wear and the lubrication properties of a surface to reflect new and useful properties. Immunochemical adsorption could be used to fabricate novel molecular electronic devices or to construct small, “smart”, unobtrusive sensors with the potential to detect a wide variety of preselected species at the molecular level. These might include a particular carcinogen in the environment, a specific type of explosive, a chemical agent, a virus, or even a tumor in the human body.

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