Media.Player

Casting Of Carbonaceous Materials In Porous Silicon Nanostructures

Technology Application

Possible applications for the carbon/silicon composite include optical-based sensors for chemical or biological compounds, as pre-concentrators for chemical or biological species contained in air or water samples, as electrode materials (e.g., for Li-ion batteries, supercapacitors, or active information display elements), and optical components. Possible applications for the freestanding carbon nanofiber arrays include field-emission arrays, electromagnetic shielding components, and porous electrode materials.

Detailed Technology Description

University researchers have developed methods to synthesize structured glassy carbon nanofibers inside the pores of a porous silicon template by carbonization and obtain free-standing nanofiber by dissolution of the porous silicon template. The carbon nanofibers adopt the shape and morphology of the porous silicon template. The carbon/porous silicon composites are robust, surviving repeated thermal and organic vapor adsorption cycles. The carbon nanocasting approach creates surfaces that: (a) have increased affinity for non-polar organic molecules such as toluene, leading to a 10× improvement in the sensitivity of the sensor; (b) have increased surface area relative to the template leading to greater capacity as an adsorbent; (c) are very stable; and, (d) uniformly cover the underlying silicon layer.

Supplementary Information

Inventor: Mukhopadhyay, Sharmila M.
Priority Number: US20130130383A1
IPC Current: C09D000500
US Class: 435395 | 204400 | 204431 | 210506 | 427180 | 427201 | 427569 | 428143 | 502100 | 502300 | 977701 | 977715 | 977890
Assignee Applicant: Wright State University,Dayton
Title: ULTRAHIGH SURFACE AREA SUPPORTS FOR NANOMATERIAL ATTACHMENT
Usefulness: ULTRAHIGH SURFACE AREA SUPPORTS FOR NANOMATERIAL ATTACHMENT
Summary: The hierarchical structure is useful for: water purification; and sensing and remedial treatment of gases or fluids. The nanotubes are useful for guiding cell growth and for efficient thermal and electrical transport with the surrounding media (all claimed). The hierarchical structure is useful: for anchoring nanoparticles, such as nanometals; as thermal and charge dissipation structures in nano-radiators for electronic cooling, electromagnetic interference shielding, and encapsulation of energy storage materials; as core structure for composites; as catalyst for electrochemical reaction, hydrogen storage and water de-contamination; and in sensors.
Novelty: Hierarchical structure characterized by ultrahigh surface area, useful e.g. for water purification, and sensing and remedial treatment of gases or fluids, comprises solid substrate, intermediate layer, and nanoscale attachments

Industry

Electronics

Sub Category

Semiconductor

Application No.

9499407

Others

Intellectual Property Info

This invention has a patent pending and is available for licensing.

International Application No.: PCT/US2011/053965 

Related Materials

“Carbon and Carbon/Silicon Composites Templated in Rugate Filters for the Adsorption and Detection of Organic Vapors” Advanced Materials, Volume 23, Issue 15, pages 1776–1781, April 19, 2011

Tech ID/UC Case

22998/2011-071-0

Related Cases

2011-071-0

*Abstract

None

*IP Issue Date

Nov 22, 2016

*Principal Investigator

Name: Timothy Kelly

Department:

Name: Michael Sailor

Department:

Country/Region

USA