TITLE

Relaxation approach for the generation of inhomogeneous distributions of uniformly sized particles

AUTHOR(S)
Hunt, J.; Kundtz, N.; Landy, N.; Smith, D. R.
PUB. DATE
July 2010
SOURCE
Applied Physics Letters;7/12/2010, Vol. 97 Issue 2, p024104
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
For many applications in gradient index devices and photonic crystals, it is necessary to be able to design semicrystalline distributions of particles where the lattice constant of the distribution is an arbitrary function of position. We propose a method to generate such distributions which is physically motivated by a system of interacting particles, and apply it to the design and implementation of a microwave gradient index lens. While the demonstration was preformed at microwave wavelengths, this technique would also be particularly useful for designing devices for operation at IR and visible wavelengths where the fabrication of distributions of uniformly sized holes or columns is very easy.
ACCESSION #
52289386

 

Related Articles

  • Reconfigurable gradient index using VO2 memory metamaterials. Goldflam, M. D.; Driscoll, T.; Chapler, B.; Khatib, O.; Marie Jokerst, N.; Palit, S.; Smith, D. R.; Bong-Jun Kim; Giwan Seo; Hyun-Tak Kim; Ventra, M. Di; Basov, D. N. // Applied Physics Letters;7/25/2011, Vol. 99 Issue 4, p044103 

    We demonstrate tuning of a metamaterial device that incorporates a form of spatial gradient control. Electrical tuning of the metamaterial is achieved through a vanadium dioxide layer which interacts with an array of split ring resonators. We achieved a spatial gradient in the magnitude of...

  • Shape oscillations on bubbles rising in clean and in tap water. Veldhuis, Christian; Biesheuvel, Arie; Van Wijngaarden, Leen // Physics of Fluids;Apr2008, Vol. 20 Issue 4, p040705 

    This paper deals with air bubbles rising in purified water in the range of equivalent diameters where surface oscillations appear on the interface. The shape of the bubbles including these capillary distortions is recorded by taking a large number of high speed pictures for each spiraling or...

  • Broadband Wide Angle Lens Implemented with Dielectric Metamaterials. Hunt, John; Kundtz, Nathan; Landy, Nathan; Nguyen, Vinh; Perram, Tim; Starr, Anthony; Smith, David R. // Sensors (14248220);2011, Vol. 11 Issue 8, p7982 

    The Luneburg lens is a powerful imaging device, exhibiting aberration free focusing for parallel rays incident from any direction. However, its advantages are offset by a focal surface that is spherical and thus difficult to integrate with standard planar detector and emitter arrays. Using the...

  • Stabilization of a metastable crystalline phase by twinning. Davey, R.J.; Maginn, S.J.; Andrews, S. J.; Buckley, A. M.; Cottier, D.; Dempsey, P.; Rout, J. E.; Stanley, D. R.; Taylor, A. // Nature;11/18/1993, Vol. 366 Issue 6452, p248 

    Shows that crystal twinning can stabilize a crystal polymorph that is otherwise not the most stable form. Use of electron microscopy, X-ray diffraction and Raman spectroscopy; Stabilization of crystal phases with useful properties by controlling twinning.

  • Gradient index metamaterial based on slot elements. Paul, Oliver; Reinhard, Benjamin; Krolla, Bernd; Beigang, René; Rahm, Marco // Applied Physics Letters;6/14/2010, Vol. 96 Issue 24, p241110 

    We present a gradient-index (GRIN) metamaterial based on an array of annular slots. The structure allows a large variation in the effective refractive index under normal-to-plane incidence and thus enables the construction of GRIN devices consisting of only a small number of functional layers....

  • Broadband and omnidirectional antireflection from conductive indium-tin-oxide nanocolumns prepared by glancing-angle deposition with nitrogen. C. H. Chang; Peichen Yu; C. S. Yang // Applied Physics Letters;2/2/2009, Vol. 94 Issue 5, pN.PAG 

    Characteristic formation of highly oriented indium-tin-oxide (ITO) nanocolumns is demonstrated using electron-beam evaporation with an obliquely incident nitrogen flux. The nanocolumn material exhibits broadband and omnidirectional antireflective characteristics up to an incidence angle of...

  • Design of an Axial Gradient Lens for Reduction of Laser Beam Size. Kassim, Abed. M. // AIP Conference Proceedings;10/27/2011, Vol. 1370 Issue 1, p263 

    A new design of an optimized optical system for the reduction of a laser beam size at a certain wavelength is presented. The technique of this design is based upon replacing the elements of a four-lenses optical system, which is designed for this purpose, by one element made of an axial gradient...

  • Using indium tin oxide material to implement the imaging of microwave plasma ignition process. Qiang Wang; Lingyun Hou; Guixin Zhang; Boya Zhang; Cheng Liu; Zhi Wang; Jian Huang // Applied Physics Letters;2/17/2014, Vol. 104 Issue 7, p074107-1 

    In this paper, a method is introduced to get global observation of microwave plasma ignition process at high pressure. A microwave resonator was designed with an indium tin oxide coated glass at bottom. Microwave plasma ignition was implemented in methane and air mixture at 10 bars by a 2ms-3...

  • Visualization of the structure of a pulsed methane—air diffusion flame. Strawa, Anthony W.; Cantwell, Brian J. // Physics of Fluids (00319171);Aug85, Vol. 28 Issue 8, p2317 

    Experiments have been carried out in a variable pressure flow facility with the objective of studying the structure of a co-flowing jet diffusion flame. The flow is visualized using an optical scheme which superimposes the luminous image of the flame on its Schlieren image. This gives a useful...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics