Novel terahertz waveguide structure: probing low dimensional materials under extremely strong electromagnetic field
| Project/Area Number |
18K13803
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 21060:Electron device and electronic equipment-related
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| Research Institution | Shizuoka University |
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Principal Investigator |
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| Project Period (FY) |
2018-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | terahertz / ultrathin materials / waveguide / spectroscopy / strong field / broadband / Terahertz / Carbone nanotubes / Terahertz spectroscopy / parallel plate waveguide |
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| Outline of Final Research Achievements |
We have measured the linear terahertz (THz) response of the of a quasi - one dimensional material, namely carbone nanotubes (CNT), with a standard parallel plate waveguide (PPWG) and compared the results with those obtained by the conventional terahertz time domain spectroscopy (TDS).The absorption in the low THz frequency range (0.2-0.5 THz) attained 75% with standard PPWG in the transverse electric mode.In the conventional THz-TDS, the THz absorption is only 20%.In THz PPWG spectroscopy, the huge absorption is due to the special configuration of the sample and the electric field which enables us to measure with a certain accuracy the real and the imaginary part of the conductivity. We have also build an ultrabroadband THz-TDS system based on air plasma. The preliminary result indicates a THz bandwidth about 10 THz with a S/N around 1000.
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| Academic Significance and Societal Importance of the Research Achievements |
Investigation of electromagnetic properties of thin film has become of utmost importance with the growing interest in 1D / 2D materials which constitute the building block of future electronic components.We have established an approach to understand the properties properties of these materials.
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Report
(3 results)
Research Products
(5 results)
