Methods for Producing Carbon Nanostructures碳納微米結構的新穎製備方法
Carbon nanostructures, such as carbon nanotubes and micro-scaled carbon inverse opal, show special physical, chemical and mechanical properties. Their fabrication has been a very active and highly competitive area of research. With the development of micro- or nano- gas sensors and bio-sensors, more and more functional carbon nanostructures are fabricated in need. However, critical and complicated reaction conditions are usually involved in the fabrication processes which is the major challenge to make carbon nanostructures in bulk.
In this invention, a novel and effective method for the fabrication of carbon nanostructures is disclosed. For examples, uniform carbon nanotube arrays and carbon inverse opal structures with the use of anodic aluminum oxide (AAO) templates and photonic crystal templates respectively. This novel fabrication approach does not require the presence of metal catalyst which saves additional steps of metal removal and therefore eliminates the contamination caused by metal catalysts. No critical and complicated reaction conditions are required. Also, all carbon nanotubes are open ends and connected to each other by thin carbon film formed on the top surface of the AAO template. Therefore, the nanotubes can be processed to be gas nanosensors and nano-electronic devices more easily. Moreover, this approach can also form uniform carbon film thickness.
This invention can be applied in gas nanosensors or detectors for toxic, flammable or some other special gases, nano humidity meters working at different fields, nano pH meters applying in bio-science, nano electronic devices, and nano optical devices.
1. Absence of metal catalyst in the fabrication process saves additional steps of metal removal
2. Contamination by metal catalysts are eliminated
3. Gas nanosensors and nano-electronic devices can be manufactured faster
4. Uniform carbon film thickness
5. No critical and complicated reaction conditions are required
6. Low production costz
- Gas nanosensors or detectors
- Highly sensitive nano humidity meters working at different fields
- Nano pH meters
- Nano electronic devices
- Nano optical devices
Patent Number: US7794684B2
Application Number: US2006471425A
Inventor: Miao, Jianying | Wang, Ning | Sheng, Ping
Priority Date: 20 Jun 2005
Priority Number: US7794684B2
Application Date: 20 Jun 2006
Publication Date: 14 Sep 2010
IPC Current: D01F000912
US Class: 4234471 | 4234473 | 4234477 | 977842
Assignee Applicant: The Hong Kong University of Science & Technology
Title: Methods for producing carbon nanostructures
Usefulness: Methods for producing carbon nanostructures
Summary: The method is useful producing an interconnected carbon nanostructure, which is useful in an electronic or optical device (claimed), nanotechnology and other fields of material science.
Novelty: Producing an interconnected carbon nanostructure, comprises placing nanostructure template in reaction chamber, vaporizing amount of polymer in the chamber, creating vacuum in the chamber, and feeding amount of inert gas into the chamber
Chemical/Material
Chemical/Material Application
20 Jun 2006
US 11/471425
US 7794684
TTC.PA.248
Hong Kong
