Fabrication of biopolymer cantilevers

Object Details

View

GRØN DYST 2010 Technical University of Denmark

Fabrication of biopolymer cantilevers
Paper
Author:Nikolaj Feidenhans'l (Department of Micro- and Nanotechnology, Technical University of Denmark, Denmark)
Nis Fisker-Bødker (Department of Micro- and Nanotechnology, Technical University of Denmark, Denmark)
Supervisor:Stephan Keller (Department of Micro- and Nanotechnology, Technical University of Denmark, Denmark)
Date: 2010-06-25     Track: Main     Session: 1
DOI:10.4122/1.1000000121
DOI:10.4122/1.1000000122

With our novel production method biopolymer micro cantilevers can be manufactured cheap and easily, rendering the measurement of degradability a matter of a few days. Our micro cantilevers are made of the PLLA (poly-l-lactide), measure 100 x 500 x 10 µm (width, length, height) but are positioned on a supporting body chip to allow handling with tweezers. As biopolymers are to fragile to process with standard silicon techniques we developed a fabrication method using nanoimprint lithography, where the chip structure is defined by pressing a stamp into the biopolymer layer. This has previously only been done with ordinary plastics. The degradation is then evaluated by placing the chip in a solution and measuring its resonance frequency, which depend on the cantilever mass. As proof of concept this measurement was also performed.