US 9,522,820 B2Granted

Processes for rapid microfabrication using thermoplastics and devices thereof

AssigneeThe Regents of the University of California

InventorsMichelle Khine, Chi-shuo Chen, Anthony Grimes, David Nate Breslauer, Luke Lee, Michael Dunlap, Ajay Gopinathan, Sayantani Ghosh

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Abstract

A method is provided to prepare one or more microfluidic channels on a receptive material by applying an image-forming material to a heat sensitive thermoplastic receptive material in a designed pattern and heating the material under conditions that reduce the size of the thermoplastic receptive material by at least about 60%. In an alternative aspect, the microfluidic channels on receptive material are prepared by etching a designed pattern into a heat sensitive thermoplastic material support and then heating the material under conditions that reduce the size of the thermoplastic receptive material by at least about 60%.

Claims9

Dependent claims

A method to prepare a textured metal surface, comprising the steps of:

a) depositing a metal film onto a heat sensitive thermoplastic receptive material;
and
b) reducing the heat sensitive thermoplastic receptive material with the metal film deposited thereon in plane with respect to at least one of width and length, by at least about 60%, wherein the metal film deposited on the heat sensitive thermoplastic receptive material forms wrinkles having a height or thickness, wherein a height or thickness of the wrinkles is over 500% the thickness of the metal film deposited on the heat sensitive thermoplastic receptive material prior to reducing in plane with respect to at least one of width and length;
thereby preparing a textured metal surface.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 12/742,598Filed 12 Nov 2008 · us provisional application
Priority: 13 Nov 2007
Published: US 2011/0122406 A126 May 2011
Granted: 20 Dec 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification27 codes

B01L 3/502707
By integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g.…
B01F 25/10
Flow mixers; Mixers for falling materials, e.g. solid particles: mixing by creating a vortex flow, e.g. by tangential introduction of flow components
B01F 25/433
Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction: mixing tubes wherein the shape of the tube influences…
B01F 25/4331
Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly…