Photonic crystal high-efficiency multispectral thermal emitters

El-Kady, I.; Farfan, G. B.; Rammohan, R.; Taha, M. M. Reda
October 2008
Applied Physics Letters;10/13/2008, Vol. 93 Issue 15, p153501
Academic Journal
We demonstrate through numerical simulation the modification of the thermal emission spectrum by a metallic photonic crystal (PhC). Here the radiation is funneled into a narrow emission band in contrast to the broad spectrum associated with a Planckian-distribution. A detailed quantitative evaluation of the spectral, power, and angular efficiencies of a PhC thermal emitter and its portability across IR spectral bands is provided. We show that an optimized tungsten PhC possesses a predominant narrow-band forward emission profile with an emitter efficiency that is more than double that of an ideal blackbody and ∼65–75% more power-efficient across the IR spectrum.


Related Articles

  • Peculiarities of radiation in chiral photonic crystals without local refraction. Gevorgyan, A. // Technical Physics;Jun2008, Vol. 53 Issue 6, p737 

    Propagation of light through a planar layer of a chiral photonic crystal (CPC) enriched by dye molecules. The limiting case (namely, an amplifying CPC in the absence of local refraction) is considered. Peculiarities of emission spectra in the absence and in the presence of insulating boundaries...

  • Radiative recombination in initial and electron-irradiated GaP crystals.  // Semiconductor Physics, Quantum Electronics & Optoelectronics;2010, Vol. 13 Issue 1, p30 

    No abstract available.

  • Nanostructured fuzz growth on tungsten under low-energy and high-flux He irradiation. Yang, Qi; You, Yu-Wei; Liu, Lu; Fan, Hongyu; Ni, Weiyuan; Liu, Dongping; Liu, C. S.; Benstetter, Günther; Wang, Younian // Scientific Reports;6/19/2015, p10959 

    We report the formation of wave-like structures and nanostructured fuzzes in the polycrystalline tungsten (W) irradiated with high-flux and low-energy helium (He) ions. From conductive atomic force microscope measurements, we have simultaneously obtained the surface topography and current...

  • Chromium Emissions during Welding in an Aluminum Shipbuilding Environment. MCMANUS, T. N.; HADDAD, A. N. // Welding Journal;2016 Supplement, Vol. 95, p86 

    Chromium is one of the minor additives contained in aluminum alloys (0.05 to 0.35% in the 5000 series to 0.04 to 0.40% in the 6000 series) used in marine applications. Argon-shielded gas metal arc welding (GMAW) and gas tungsten arc welding (GTAW) processes are typically employed in a shipyard...

  • Oscillator cuts radiated emissions.  // Electronics Weekly;11/3/2004, Issue 2169, p38 

    The article presents the information that Dallas Semiconductor Corp. has a centre-spread-spectrum oscillator that is designed to offers up to 20dB reduction in radiated emissions compared to crystal oscillators. The 3V fixed-frequency clock oscillator comes pre-programmed from the factory with a...

  • Photocatalytic Degradation of Methyl Orange in Water by Samarium-Doped TiO2. Jianwen Shi; Jingtang Zheng; Yan Hu; Yucui Zhao // Environmental Engineering Science;May2008, Vol. 25 Issue 4, p489 

    A series of Sm-doped TiO2 nanoparticles were prepared by the sol-gel method and characterized with X-ray diffraction (XRD), transmission electron microscope (TEM), and ultraviolet-visible diffuse reflectance spectra (DRS). Their photacatalytic activities were studied by photodegradation methyl...

  • Infrared study of UV-irradiated tungsten trioxide powders containing adsorbed dimethyl methyl phosphonate and trimethyl phosphate. Waghe, Anil; Kanan, Sofian M.; Abu-Yousef, Imad; Jensen, Bruce; Tripp, Carl P. // Research on Chemical Intermediates;2006, Vol. 32 Issue 7, p613 

    The photodecomposition of dimethyl methylphosphonate (DMMP) and trimethyl phosphate (TMP) adsorbed on monoclinic WO3 powders when irradiated by ultraviolet light (UV) in air, oxygen, and under evacuation was investigated using infrared spectroscopy (IR). The IR spectra show that DMMP decomposes...

  • Returning Positron Flux in the Polar-Cap Regions of a Radio Pulsar. Barsukov, D. P.; Tsygan, A. I. // Astronomy Reports;Dec2003, Vol. 47 Issue 12, p1046 

    An approximate method for calculating the returning positron flux in the polar-cap regions of a radio pulsar is proposed. The pulsar is considered in the Goldreich–Julian model for a regime of free-electron emission from the neutron-star surface in the region of open lines of the dipolar...

  • ENSO surface longwave radiation forcing over the tropical Pacific. Pavlakis, K. G.; Hatzidimitriou, D.; Drakakis, E.; Matsoukas, C.; Fotiadi, A.; Hatzianastassiou, N.; Vardavas, I. // Atmospheric Chemistry & Physics;2007, Vol. 7 Issue 8, p2013 

    We have studied the spatial and temporal variation of the surface longwave radiation (downwelling and net) over a 21-year period in the tropical and subtropical Pacific Ocean (40 S-40 N, 90 E-75 W). The fluxes were computed using a deterministic model for atmospheric radiation transfer, along...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics