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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.8
- 수록면
- 378 - 382 (5page)
이용수
초록· 키워드
오류제보하기
In most previous investigations of plasmonic and metamaterial applications, the metallic film has been regarded as a perfect electrical conductor. Here we demonstrate the resonance characteristics of THz metamaterials fabricated from metal film that has a finite dielectric constant, using finite-difference time-domain simulations. We found strong redshift and spectral broadening of the resonance as we decrease the metal’s plasma frequency in the Drude free-electron model. The frequency shift can be attributed to the effective thinning of the metal film, originating from the increase in penetration depth as the plasma frequency decreases. On the contrary, only peak broadening occurs with an increase in the scattering rate. The metal-thickness dependence confirms that the redshift and spectral broadening occur when the effective metal thickness drops below the skin-depth limit. The electromagnetic field distribution illustrates the reduced field enhancement and reduced funneling effects near the gap area in the case of low plasma frequency, which is associated with reduced charge density in the metal film.
목차
I. INTRODUCTION
II. RESULTS AND DISCUSSION
III. CONCLUSION
REFERENCES
참고문헌 (25)
참고문헌 신청
D. Schurig / 2006 / Metamaterial electromagnetic cloak at microwave frequencies / Sci. 314:977~980
J. B. Pendry / 2006 / Controlling electromagnetic fields / Sci. 312:1780~1782
J. B. Pendry / 2000 / Negative refraction makes a perfect lens / Phys. Rev. Lett. 85:3966~3969
S. J. Park / 2014 / Detection of microorganisms using terahertz metamaterials / Sci. Rep. 4:4988
J. Federici / 2010 / Review of terahertz and subterahertz wireless communications / J. Appl. Phys. 107:111101
J. B. Pendry / 2006 / Controlling electromagnetic fields / Sci. 312:1780~1782
J. B. Pendry / 2000 / Negative refraction makes a perfect lens / Phys. Rev. Lett. 85:3966~3969
S. J. Park / 2014 / Detection of microorganisms using terahertz metamaterials / Sci. Rep. 4:4988
J. Federici / 2010 / Review of terahertz and subterahertz wireless communications / J. Appl. Phys. 107:111101
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