NDLI: A Nanostructured Thermosensitive Smart Surface With Integrated Microheater for Wettability Control

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Londe, Ghanashyam Chunder, Anindarupa Zhai, Lei Hyoung, J. Cho
Copyright Year	2008
Abstract	This paper describes the design and fabrication of a switchable thermosensitive polymer with an integrated microheater as a smart surface platform for wettabilty control. The thermoresponsive surface is synthesized on a glass substrate using the polymer poly(N-isopropylacrylamide) (PNIPAAm) which can change its wettability when subjected to change in temperature. PNIPAAm is hydrophilic when the surface temperature is less than the lower critical solution temperature (LCST) range of about 28–33 °C and is hydrophobic above the LCST range. The PNIPAAm surface is heated by spiral gold microheaters which are fabricated on the lower side of the glass substrate. The contact angle change with change in temperature is tested using a standard goniometer. Time response analysis of the surface is presented. This smart surface can be used as an active or adaptive component for microflow regulation and can be potentially integrated into large scale lab-on-chip (LOC) systems.
Starting Page	1021
Ending Page	1025
Page Count	5
File Format	PDF
ISBN	9780791848746
DOI	10.1115/IMECE2008-68732
e-ISBN	9780791838402
Volume Number	Volume 13: Nano-Manufacturing Technology; and Micro and Nano Systems, Parts A and B
Conference Proceedings	ASME 2008 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2008-10-31
Publisher Place	Boston, Massachusetts, USA
Access Restriction	Subscribed
Subject Keyword	Design Temperature Manufacturing Polymers Glass
Content Type	Text
Resource Type	Article

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