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Optical and Electrical Characterization of Pure PMMA for Terahertz Wide-band Metamaterial Absorbers
Shi, Zaiying; Song, Lixin; Zhang, Tao
2019
Source PublicationJOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES
ISSN1866-6892
Volume40Issue:1Pages:80
SubtypeArticle
AbstractThe characteristics of relative permittivity and reflectance for poly (methyl methacrylate) (PMMA) films prepared by spin-coating were investigated and an excellent wideband terahertz (THz) metamaterial absorber (MA) had been fabricated by employing PMMA film as the dielectric layer. XRD and AFM indicated that all the PMMA films with thicknesses from 11 to 17m were amorphous and extremely smooth with roughness about 0.203nm. Raman results demonstrated that vibration strength of the same covalent bonds tends to be consistent with an increase in film thickness. The dual beam laser interferometer (DBLI) was employed to study the influence of applied frequency and thickness on the relative permittivity, and the results exhibited dielectric constants increased from 2.88 to 4.04 with the thickness increasing from 9 to 14m. And the dielectric constants for PMMA films with a certain thickness (8m) gradually declined when the applied frequency increased from 100 to 10(5)Hz; besides, the dielectric constant in THz band was forecasted approximately 2.5. The terahertz time domain spectrometer (THz-TDS) results revealed that the THz reflectance was of gradual degradation from 80 to 58% at 3.2THz, as the thickness increased from 11 to 17m. In addition, the UV-VIS spectrum showed that thickness had little effect on reflectance and transmittance in visible region, leading to the almost same E-g (energy gap) about 3.7eV. At last, by employing PMMA film as the dielectric layer, a highly wideband metamaterial absorber with absorption >80% from 4.1 to 7.4THz was fabricated.
KeywordPMMA Terahertz Permittivity Reflectance Metamaterial absorber
DOI10.1007/s10762-018-0553-8
Language英语
WOS Research AreaEngineering ; Optics ; Physics
PublisherSPRINGER
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27433
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Shi, Zaiying,Song, Lixin,Zhang, Tao. Optical and Electrical Characterization of Pure PMMA for Terahertz Wide-band Metamaterial Absorbers[J]. JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES,2019,40(1):80.
APA Shi, Zaiying,Song, Lixin,&Zhang, Tao.(2019).Optical and Electrical Characterization of Pure PMMA for Terahertz Wide-band Metamaterial Absorbers.JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES,40(1),80.
MLA Shi, Zaiying,et al."Optical and Electrical Characterization of Pure PMMA for Terahertz Wide-band Metamaterial Absorbers".JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES 40.1(2019):80.
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