Figure 1
A collection of microfabricated stainless steel pens. Various features have been incorporated in different pens, including reservoirs, support struts, and trenches to increase capillation forces. The ability to lithographically create features of arbitrary shape and small size gives significant design flexibility. Although the resolution of our lithography was limited to 30 microns, more sophisticated equipment should easily approach 1 micron. Bar, 1 mm.
