Journal
MATERIALS RESEARCH BULLETIN
Volume 69, Issue -, Pages 65-70Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2015.02.025
Keywords
Surfaces; Electron microscopy; Infrared spectroscopy; Microstructure; Surface properties
Categories
Funding
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [NRF-2010-0027963]
- Agency for Defense Development through Chemical and Biological Defense Research Center [CBD-12]
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Recent progress in health diagnostics has led to the development of simple and inexpensive systems. Thread-based microfluidic devices allow for portable and inexpensive field-based technologies enabling medical diagnostics, environmental monitoring, and food safety analysis. However, controlling the flow rate of wool thread, which is a very important part of thread-based microfluidic devices, is quite difficult. For this reason, we focused on thread-based microfluidics in the study. We developed a method of changing the wettability of hydrophobic thread, including wool thread. Thus, using natural wool thread as a channel, we demonstrate herein that the manipulation of the liquid flow, such as micro selecting and micro mixing, can be achieved by applying plasma treatment to wool thread. In addition to enabling the flow control of the treated wool channels consisting of all natural substances, this procedure will also be beneficial for biological sensing devices. We found that wools treated with various gases have different flow rates. We used an atmospheric plasma with O-2, N-2 and Ar gases. (C) 2015 Elsevier Ltd. All rights reserved.
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