Abstract
A method for creating angled structures for use in microvalve devices applicable to control of liquid flow is presented. This technique utilizes a modified LIGA process with successive angled and rotated exposures into free standing acrylic sheets to form a tapered valve seat structure. These valve seats are integrated with bulk micromachined silicon diaphragms and tapered PMMA valve bosses to complete the microvalve. The long term goal of this research effort is to develop a normally-closed, low power, microfabricated valve for use in an implantable drug delivery system. This paper reports on the design and fabrication of microvalves using off-axis LIGA exposures. Flow testing and fluid handling characterization results are also presented.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 25 August 1997 Accepted: 22 October 1997
Rights and permissions
About this article
Cite this article
Tsuei, T., Wood, R., Khan Malek, C. et al. Tapered microvalves fabricated by off-axis X-ray exposures. Microsystem Technologies 4, 201–204 (1998). https://doi.org/10.1007/s005420050131
Issue Date:
DOI: https://doi.org/10.1007/s005420050131