Yo TANAKA and colleagues have developed a valve formed by heat-sealing the ultra- thin glass of 6 μm thickness in a circular chamber of 3 mm diameter and 50 μm depth. It works with aqueous solution as well as with methanol, ethanol and acetone at maximum flow rates of 0,8 microliter per minute.
RIKEN news release, May 27, 2014
RIKEN group develops peristaltic pump for 100% glass-based microfluidics