This work introduces capillary flow in paper microfluidics that features a flow rate Q that is constant in time, t, and independent of the viscosity of liquid sample, µ liquid : Q≠f(t, µ liquid). Compared to conventional paper microfluidics, we enclose the paper in solid walls and add a long and narrow air vent as outlet of the capillary pump, such that the flow rate is dominated by the downstr...

In recent years, there is a surge in the popularity of using insulin pump or continuous subcutaneous insulin infusion (CSII) therapy, as opposed to multiple daily injections (MDI) by insulin syringe or an insulin pen. Some case studies have suggested that insulin delivery failure may be caused by the precipitation of insulin within the infusion set. Speculation also exists that the flow of insu...

Austin J Baird: Modeling valveless pumping mechanisms (Under the direction of Laura Miller) Several mechanisms of valveless pumping are studied numerically. The discussion begins with an introduction into the two well-known driving mechanisms of flow in valveless tubes: impedance pumping and peristalsis. Flow generated from peristalsis and impedance pumping is examined using the immersed bounda...

The emission to the atmosphere of soil fumigants such as chloropicrin represents a potentially important human exposure pathway. Commonly, determining the air concentration of fumigants is carried out by pumping air through sorbent tubes which chemically retain the fumigant. In order to obtain an accurate measurement, it is essential that the fumigant does not break through the sorbent tubes, s...

0017-9310/$ see front matter 2009 Elsevier Ltd. A doi:10.1016/j.ijheatmasstransfer.2009.09.006 * Corresponding author. Tel.: +44 (0) 20 7594 6215 E-mail addresses: [email protected] (D.A. ac.uk (A.S. Holmes), [email protected] (K.R. Pu This paper describes a new experimental method for measuring stator heat transfer in a rotor–stator disc system using an electrical heater array. Th...