Wednesday, 2 November 2005 - 9:40 AM
302f
Self-Assembled Radio Frequency (Rf) Shielded Non-Invasively Trackable Micro Containers
Timothy Leong
1, Barjor Gimi
2, Zhiyong Gu
1, Zaver Bhujwalla
2, and
David H. Gracias1. (1) Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 125 Maryland Hall, 3400 N Charles Street, Baltimore, MD 21218, (2) Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University (JHU) School of Medicine, Baltimore, MD 21205
This paper describes the parallel self-assembly of 200 micron scale perforated, metallic containers, with arbitrarily patterned faces, from 2D photolithographically patterned precursors. After self-assembly, the containers were filled with hydrogels, biological constituents or spherical beads that could be released by dissolution or agitation. The containers can be tracked in capillaries and microfluidic channels as a result of an RF shielding effect, providing a characteristic hypointensity within the microcontainer.
Web Page:
www.jhu.edu/chbe/gracias/
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