ArticleScience and technology of advanced materials2022
Carbon nanotube-based, serially connected terahertz sensor with enhanced thermal and optical efficiencies.
Article in Science and technology of advanced materials, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed.
- Localized polarization-guided alignment control in carbon nanotube films via femtosecond-pulse optical post-processing.Nature communications · 2026Article
- Plant-Based Biofillers for Polymer Composites: Characterization, Surface Modification, and Application Potential.Polymers · 2025Review
- Materials-Driven Advancements in Chipless Radio-Frequency Identification and Antenna Technologies.Sensors (Basel, Switzerland) · 2025Review
- Aerosol Doping System for Microscale Seamless p-n Patterning of Carbon Nanotube Films.ACS applied materials & interfaces · 2024Article
- System design of large-area vertical photothermoelectric detectors based on carbon nanotube forests with MXene electrodes.Nanoscale advances · 2023Article
- Easy, Fast Self-Heating Polyurethane Nanocomposite with the Introduction of Thermally Annealed Carbon Nanotubes Using Near-Infrared Lased Irradiation.Materials (Basel, Switzerland) · 2022Article
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5 authors.
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Abstract
Owing to their high thermal and optical performances, carbon nanotube (CNT) films are used in various photo-thermo-electric (PTE) applications, such as terahertz (THz) sensing and energy harvesting. To improve the performance of PTE devices, a device structure should be designed based on a deep understanding of the thermal and optical responses of the CNT film. However, the optical properties of CNT films in the THz frequency region remain unclear because of the difficulties associated with device processing and measurements. Herein, we report our findings on the thermal and optical characteristics of CNT films. The shape of the CNT film that maximizes the product of the thermal and optical factors (optimal structure of the PTE sensor) depends on the frequency of the irradiating electromagnetic wave. The optimal film thickness and width values for THz irradiation range from 300-600 nm and 50-70 µm, respectively. Subsequently, we fabricated a serially connected, multi-element PTE sensor with an optimal device structure and enhanced the detection sensitivity by approximately 13 times compared with a single-element PTE sensor. In addition, we demonstrated the first THz spectroscopy application using a PTE sensor. The findings of this study, thermal/optical factor enhancement, and micro-sized CNT film processing technology can be used to improve the performance of all CNT-based photothermal devices, including PTE sensors and thermoelectric generators.
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