A Simple Vacuum Pump

Vacuum Gauge to Vacuum Pump Valve

A simple light-driven transmembrane proton pump.

Light-induced lipophilic porphyrin/aqueous acceptor charge separation across a single lipid-water interface can pump protons across the lipid bilayer when the hydrophobic weak acids, carbonylcyanide m-chlorophenylhydrazone and its p-trifluoromethoxyphenyl analogue, are present. These compounds act as proton carriers across lipid bilayers. In their symmetric presence across the bilayer, the posi...

Simple vacuum experiments for undergraduate student laboratories

duate ts, the s and , leak tector ble to An overview of typical simple experiments, intended for didactic laboratory vacuum classes for undergra students majoring in Physics, Physics Engineering and Material Sciences, is presented. For all the experimen students perform actual measurements of characteristics of different vacuum components or material propertie compare the obtained results with ...

Emergency power source for an ion vacuum pump.

This note describes a simple high-voltage dc generator which serves as an emergency power source for an ion vacuum pump during power interruptions, or failure of the main supply.

MEMS Micro-vacuum Pump for Portable Gas Analyzers

There are many advantages to miniaturizing systems for chemical and biological analysis. Recent interest in this area has led to the cre ation of several research programs, including a Micro Gas Analyzer (MGA) project at MIT. The goal of this project is to develop an inexpensive, portable, real-time, and low-power approach for detect ing chemical and biological agents. Elements entering the MGA...