Fabrication of micro-mechanical sensors with the polymer SU-8

S. Keller, Maria Tenje, N. Noeth, S. Dohn, G. Blagoi, D. Haefliger, A. Boisen

Research output: Contribution to conferencePaper, not in proceedingpeer-review

Abstract

In this paper, we present the design and fabrication of biosensors based on SU-8 cantilevers with a thickness ≤ 5μm. The processing of the polymer was optimized to reduce initial bending of the devices which is essential for optical read-out of the cantilever deflection. Solvent absorption in the SU-8 had to be minimized to reduce drift of the cantilever bending during measurements in liquid. The shelf-life of the sensors was improved to enable storage for several months. Further, we introduced methods for process integrated metallization, backside passivation and surface functionalization allowing the fabrication of a variety of cantilever-based sensors.
Original languageEnglish
Publication statusPublished - 2009
Externally publishedYes
EventEurosensors XXIII - Lausanne, Switzerland
Duration: 2009 Sept 62009 Sept 9

Conference

ConferenceEurosensors XXIII
Country/TerritorySwitzerland
CityLausanne
Period2009/09/062009/09/09

Subject classification (UKÄ)

  • Medical Engineering

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