From: Modular Microfluidic Filters Based on Transparent Membranes Date of download: 10/16/2017 Copyright © ASME. All rights reserved. From: Modular Microfluidic Filters Based on Transparent Membranes J. Electron. Packag. 2016;138(4):041002-041002-6. doi:10.1115/1.4034369 Figure Legend: Two methods of integrating the exchangeable filter device into a microfluidic filter system: (a) In the first method, the filter (circled) is sandwiched between PDMS adapters with supporting glass slides with capillary tubes attached. (b) Close-up view of the filter membrane, showing its periodic array of pores, each 6 μm in diameter. (c) In the second method of integration, the whole microfluidic structure, including microfluidic channels, is moulded in PDMS. In this photograph, the fluid-carrying channels are oriented left-to-right. The membrane filter would be inserted into the insertion slot perpendicular to the channels. (d) A closer view of the membrane filter in place.