Related Experiment Video
Updated: Jun 15, 2026
07:44
Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
Published on: April 28, 2016
15.5K
Broadband Infrared Carbon Nanotube Linear Photodetector Arrays.
Shifan Wang1,2,3, Naoki Higashitarumizu1,2, Hyong Min Kim1,2
1Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, California 94720, United States.
Nano Letters
|December 9, 2025
Summary
Large-area photodetectors using carbon nanotube (CNT) networks were fabricated via vacuum filtration and laser scribing. These scalable, cost-effective devices operate as bolometers with broad spectral sensitivity, enabling infrared imaging.
Area of Science:
- Materials Science
- Nanotechnology
- Optoelectronics
Background:
- Carbon nanotubes (CNTs) offer excellent optoelectronic properties for photodetectors.
- Conventional CNT photodetector designs face challenges in scalability and fabrication complexity.
Purpose of the Study:
- To develop scalable and cost-effective photodetectors using carbon nanotube networks.
- To overcome limitations of conventional single or aligned nanotube designs.
Main Methods:
- Fabrication of large-area photodetectors using CNT-suspended solutions via vacuum filtration.
- Direct laser scribing for patterning CNT networks on polymeric filter paper substrates.
- Utilizing low-thermal-conductance substrates to mitigate the need for suspended structures.
Main Results:
- Uniform CNT networks formed on low-thermal-conductance polymeric filter papers.
- Scalable and cost-effective production of single devices and 49-pixel linear arrays using laser cutting.
- Devices function as bolometers with broad spectral sensitivity from visible to midwave infrared at room temperature.
Conclusions:
- Demonstrated a novel, simplified fabrication method for large-area CNT photodetectors.
- Achieved stable room-temperature operation and broad spectral response.
- Successfully demonstrated proof-of-concept infrared imaging using the fabricated linear arrays.
Related Concept Videos
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
01:30Electronic Distance Measuring Instruments
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...