Carbon nanotube (CNT) films, easily drawn from super-aligned CNT arrays with a large area and a good compatibility with semiconductor technology, have been used as light sensitive materials for infrared (IR) detection. A bolometric CNT detector made from one layer of super-aligned CNT film shows a 15.4% resistance change under 10 mW mm(-2) of IR illumination and a fast characteristic response time of 4.4 ms due to its ultra-small heat capacity per unit area in vacuum at room temperature. Besides the power intensity detection, the anisotropic property of the super-aligned CNT films makes them ideal materials to detect the polarization of IR light simultaneously, which provides great potential in infrared imaging polarimetry. Theoretical analyses have been carried out to investigate the influences of CNT film properties on the responsivity and response time of the detector.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1088/0957-4484/22/2/025502 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Highly Thermally Conductive Super-Aligned Boron Nitride Nanotube Films for Flexible Electronics Thermal Management.
ACS Appl Mater Interfaces
July 2024
Wuhan National High Magnetic Field Center & School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Article Synopsis
- Researchers are exploring flexible electronics to enhance integration, miniaturization, and multifunctionality, which can increase power density but face challenges with heat dissipation due to low thermal conductivity of substrates.
- A new method using template-assisted chemical conversion creates boron nitride nanotube (BNNT) films that are highly conductive and flexible, utilizing aligned carbon nanotube (CNT) templates for structure.
- The resulting BNNT film achieves impressive thermal conductivity at 45.5 W m K, superior heat dissipation compared to traditional materials, and shows promise for cooling applications in flexible electronics.
High Ampacity On-Chip Wires Implemented by Aligned Carbon Nanotube-Cu Composite.
Materials (Basel)
January 2023
Key Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.
With the size of electronic devices shrinking to the nanometer scale, it is of great importance to develope new wire materials with higher current carrying capacity than traditional materials such as gold (Au) and copper (Cu). This is urgently needed for more efficient, compact and functional integrated chips and microsystems. To meet the needs of an atom chip, here we report a new solution by introducing super-aligned carbon nanotubes (SACNTs) into Cu thin films.
View Article and Find Full Text PDFSoft-lock drawing of super-aligned carbon nanotube bundles for nanometre electrical contacts.
Nat Nanotechnol
March 2022
Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA.
The assembly of single-walled carbon nanotubes (CNTs) into high-density horizontal arrays is strongly desired for practical applications, but challenges remain despite myriads of research efforts. Herein, we developed a non-destructive soft-lock drawing method to achieve ultraclean single-walled CNT arrays with a very high degree of alignment (angle standard deviation of ~0.03°).
View Article and Find Full Text PDFInvestigation and optimization of polarization properties of self-assembled carbon nanotube films.
Nanotechnology
February 2022
CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery & Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China.
Super-aligned carbon nanotubes (CNTs) film has strong anisotropy to light propagation. In order to better integrate the self-assembled CNTs into microelectromechanical system (MEMS) for polarization applications, some inherent impacts on polarization properties of CNT film were investigated. We described the polarization effects of the film thickness variation in detail, giving an optimum thickness range which is around 700-800 nm.
View Article and Find Full Text PDFHard Carbon Nanotube Sponges for Highly Efficient Cooling Moisture Absorption-Desorption Process.
ACS Nano
October 2020
Tsinghua-Foxconn Nanotechnology Research Center and Department of Physics, Tsinghua University, Beijing 100084, China.
Heat dissipation is a serious limitation for increasingly miniaturized and functionalized electronics, resulting in the continuous need for developing highly efficient cooling methods. Here, utilizing the strong van der Waals force between super-aligned carbon nanotubes (SACNTs), a self-supported three-dimensional (3D) CNT/CaCl radiator with a more outstanding cooling performance than Al cooling fins was designed. Unlike the soft CNT sponges, these 3D structures could sustain a high pressure of 4.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!