Christopher D Sims

US Patent:

20110223545, Sep 15, 2011

Filed:

Jul 25, 2008

Appl. No.:

12/670349

Inventors:

Yuli Wang - Morrisville NC, US
Christopher E. Sims - Chapel Hill NC, US
Mark Bachman - Irvine CA, US

International Classification:

G03F 7/20

US Classification:

430325, 430322

Abstract:

Systems and methods directed to the use 1002F to build microdevices and biomedical devices. Through the addition of a photosensitizing agent, Epon epoxy resin 1002F can be linked in the presence of UV light, making it useful as a photoresist or as a micropatternable structural material. One embodiment comprises combining 1002F monomer resin with a solvent and a photoinitiator, placing the monomer solution on a surface, exposing the monomer solution to UV light through a mask to initiate linking, and stripping the unlinked polymer away. In another embodiment, 3-D structures are built using two or more layers of sensitized monomer films, each having different sensitivity to light, and the use of a mask containing opaque and semi-opaque regions.

US Patent:

20200231917, Jul 23, 2020

Filed:

Jul 29, 2019

Appl. No.:

16/525191

Inventors:

- Chapel Hill NC, US
Yuli Wang - Cary NC, US
Christopher Sims - Chapel Hill NC, US

International Classification:

C12M 3/06
B01L 3/00
B81C 1/00
C12Q 1/02
C12M 1/00
C12M 1/32

Abstract:

A microfabricated device having at least one gas-entrapping feature formed therein in a configuration that entraps air bubbles upon wetting the feature with a solvent or solution is described. The device includes a sacrificial residue in contact with the gas-entrapping feature, the dissolution of which guides the wetting of the gas-entrapping feature.

US Patent:

20180346860, Dec 6, 2018

Filed:

Jun 1, 2018

Appl. No.:

15/995360

Inventors:

- Chapel Hill NC, US
Yuli Wang - Cary NC, US
Christopher Sims - Chapel Hill NC, US

International Classification:

C12M 3/06
B01L 3/00
C12M 1/32
C12M 1/00
C12Q 1/02
B81C 1/00
G01N 35/00

Abstract:

A microfabricated device having at least one gas-entrapping feature formed therein in a configuration that entraps air bubbles upon wetting the feature with a solvent or solution is described. The device includes a sacrificial residue in contact with the gas-entrapping feature, the dissolution of which guides the wetting of the gas-entrapping feature.

US Patent:

20150210972, Jul 30, 2015

Filed:

May 31, 2013

Appl. No.:

14/404225

Inventors:

- Chapel Hill NC, US
Yuli Wang - Cary NC, US
Christopher Sims - Chapel Hill NC, US

Assignee:

The University of North Carolina at Chapel Hill - Chapel Hill NC

International Classification:

C12M 3/06
C12M 1/32
B01L 3/00
C12M 1/00

Abstract:

A microfabricated device having at least one gas-entrapping feature formed therein in a configuration that entraps air bubbles upon wetting the feature with a solvent or solution is described. The device includes a sacrificial residue in contact with the gas-entrapping feature, the dissolution of which guides the wetting of the gas-entrapping feature.