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Self-Assembling, Self-Orienting Photonic Crystals of Porous Silicon

Detailed Technology Description

There are presently many examples of 1-, 2-, and 3-dimensional objects constructed using so-called self-assembly reactions. For example, covalent bonds formed between alkanethiols and gold substrates have been used to pattern surfaces; or hydrogen bonding interactions between DNA base pairs have been used to assemble nanoparticles into complex assemblies. Researchers at UC San Diego have developed a novel technique that allows for the production of optical films with spatially resolved, chemically-distinct layers. Although there is literature precedent for a range of surface modifications on porous silicon, the method can dually functionalize the sensors that impart to them their ability to self-assemble and orient selectively at an interface. The main requirement of the chemical modification reaction used in the functionalization steps is that they be stable to the hydrofluoric etchant used in generating subsequent porous silicon layers. It is anticipated that a number of chemical and electrochemical modification strategies developed for porous silicon can be used with this procedure.

Supplementary Information

Patent Number: US7318903B2
Application Number: US2003567917A
Inventor: Link, Jamie R. | Sailor, Michael J.
Priority Date: 14 Aug 2003
Priority Number: US7318903B2
Application Date: 6 Feb 2006
Publication Date: 15 Jan 2008
IPC Current: C23F000100 | B29D001100 | B32B000300 | G02B0006122
US Class: 216002 | 4283126
Assignee Applicant: The Regents of the University of California
Title: Photonic sensor particles and fabrication methods
Usefulness: Photonic sensor particles and fabrication methods
Summary: For fabricating dual-sided photonic crystal used in applications such as environmental monitoring, medical diagnostic, therapeutic applications, high throughput screening, drug discovery, biomedical implants, information display, optical switching, taggants and tracers used in forensics, and chemical and biological sensor fields.
Novelty: Method for fabricating photonic crystal used in therapeutic application, involves subjecting film including dielectric mirrors, to sonication to break up film into micron-sized particles

Industry

Chemical/Material

Sub Category

Chemical/Material Application

Application No.

7318903

Others

Related Materials

• View inventor's Smart Dust presentation from 2005.
• Visit inventor's lab link at http://chem-faculty.ucsd.edu/sailor/research.

Intellectual Property Info

This technology is presently available for licensing.

Tech ID/UC Case

19568/2003-257-0

Related Cases

2003-257-0

*Abstract

None

*IP Issue Date

Jan 15, 2008

*Principal Investigator

Name: Jamie Link

Department:

Name: Michael Sailor

Department:

Country/Region

USA