• Title/Summary/Keyword: photonic crystals

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Nano-master fabrication for photonic crystal waveguides (광결정 도파로용 나노 마스터 제작)

  • 최춘기;한상필;정명영
    • Journal of the Korean Vacuum Society
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    • v.12 no.4
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    • pp.288-292
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    • 2003

  • The fabrication of silicon nano-master with pillar structures using E-beam lithography and ICP etching was investigated for application of 2-dimensional polymer photonic crystal waveguides with air hole structures. Pillar structures with square, hexagon, dodecagon and circle were successfully fabricated. The diameters and structures of fabricated pillars were measured by CD-SEM and SPM-AFM. It was found that the optimal dose for complete circle pillar structures was 432 $\mu$C/$\textrm{cm}^2$.

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Performance Analysis of Photonic Crystal Enhanced Micro-Combustor Thermophotovoltaic System for Drone Application (광결정 표면을 이용한 드론용 마이크로 연소기 열광전 에너지변환시스템의 성능해석)

  • Lee, Junghun
    • Journal of the Korea Institute of Military Science and Technology
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    • v.24 no.3
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    • pp.309-316
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    • 2021

  • In this paper, the electrical power output of the micro-combustor thermophotovoltiac(TPV) system was analyzed. The system consists of a micro-combustor, photonic crystals(PhCs), and photovoltaic cells(PV cells). The system has a micro-combustor that can achieve over 1,000 K surface temperature by consuming 2.5 g/h hydrogen fuel. Also, this system incorporates current state-of-the-art PhCs surfaces(2D Ta PhCs and Tandem Filter) to increase electrical power output. In addition, InGaAsSb PV cell, which bandgap is 0.55 eV, was applied to convert a wide range of radiative energy. The performance analysis shows that a single micro-combustor TPV system can produce 0.4 W ~ 27.7 W electrical power with the temperature change of emitter(900 K ~ 1,500 K) and PV cell(250 K ~ 400 K).

  • https://doi.org/10.9766/KIMST.2021.24.3.309 인용 PDF KSCI