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Method to Fabricate Composite Photonic Crystals of Porous Silicon and Polymers with Highly Regular Particle Dimensions

Technology Application

Porous silicon composites are useful in a number of biological and chemical applications, including chemical and biological sensing, high- and low-throughput screening, drug delivery, and diagnostics.

Detailed Technology Description

Until now, the simplest methods of making nano-particles of porous silicon have resulted in irregular particle shapes and sizes. The more complicated fabrication methods, while rendering particles of more consistent quality, were more cumbersome to use for making large quantities of material. UC San Diego researchers have now discovered a method to make composite photonic crystals of porous silicon and polymer on a micron scale and with a high degree of particle size regularity. This method is simple and inexpensive and does not require the use of a pre-patterned “master” to determine particle shape or size. The resultant crystals have greatly improved mechanical and chemical stability and are of a more uniform geometry than could be obtained previously.

Supplementary Information

Patent Number: US8206780B2
Application Number: US2007791933A
Inventor: Li, Yang Yang | Kollengode, Vijay S. | Sailor, Michael J. | Meade, Shawn O.
Priority Date: 14 Dec 2004
Priority Number: US8206780B2
Application Date: 3 Dec 2007
Publication Date: 26 Jun 2012
IPC Current: B01J001302 | A61K000916 | A61K000950 | B05B000500
US Class: 427162 | 424489 | 424490 | 42721336 | 428402 | 977700 | 977895
Assignee Applicant: The Regents of the University of California
Title: Polymer composite photonic particles
Usefulness: Polymer composite photonic particles
Summary: The method is useful for forming photonic particles (claimed). The particles are useful e.g. in chemical and biological sensing, high-throughput screening, controlled-release drug delivery, and product marking.
Novelty: Forming photonic particles used in e.g. in drug discovery, comprises patterning a soluble polymer on a porous photonic material leaving dividing portions untreated, infusing the polymer into the material, and removing the dividing portions

Industry

Chemical/Material

Sub Category

Chemical/Material Application

Application No.

8206780

Others

Related Materials

• See inventor’s advanced materials presentation and smart dust presentation from 2005.
• See inventor’s lab link at http://chem-faculty.ucsd.edu/sailor/research.

Intellectual Property Info

This technology is available for licensing, sponsored research or both. More detailed information can be obtained under a confidentiality agreement.

Tech ID/UC Case

19924/2005-090-0

Related Cases

2005-090-0

*Abstract

UC San Diego researchers have developed an extensive platform of technologies based on porous silicon and/or polymeric nano-particles (“smart dust”). This platform encompasses multiple uses of nano-scale particles of porous silicon photonic crystals and takes advantage of the optical properties and other physical characteristics of this material.

*IP Issue Date

Jun 26, 2012

*Principal Investigator

Name: Vijay Kollengode

Department:

Name: Yang Yang Li

Department:

Name: Shawn Meade

Department:

Name: Michael Sailor

Department:

Country/Region

USA