{"product_id":"characterization-of-pdms-as-encapsulation-for-implantable-mems-systems-von-di-sun","title":"Characterization of PDMS as Encapsulation for Implantable MEMS Systems","description":"\u003cp\u003eModifications to a novel multi-layered polydimethylsiloxane (PDMS) encapsulation process that include improvements to the substrate cleaning procedure and roller casting application method were developed to produce a robust non-hermetic micropackage technology for chronic micro implant systems. Packaged interdigitated electrodes subjected to accelerated lifetime tests at 85 degree C in a saline environment had an average lifetime of 156.6 days, which exceeded the previous average lifetime by 22.3 days and suggests a packaging lifetime in the human body greater than 2 years and perhaps as long as 5 years. In order to understand the unexpectedly long lifetime, material characterization experiments were performed on PDMS films deposited by dip, spin and roller-casting. The results show that roller casting increases the mass density, decreases the vapor permeability, and increases bonding strength on FR4 PCB substrates by +2%, - 14%, +19%, respectively relative to the other deposition methods.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783659565441\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9783659565441","offer_id":39434291347549,"sku":"9783659565441","price":54.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/a9bc55c2-25a2-4f1a-8fe3-26c9dbf0b23f.jpg?v=1769491763","url":"https:\/\/shop.autorenwelt.de\/en\/products\/characterization-of-pdms-as-encapsulation-for-implantable-mems-systems-von-di-sun","provider":"Autorenwelt Shop","version":"1.0","type":"link"}