TITLE

Mechanically tunable photonic crystal structure

AUTHOR(S)
Park, Wounjhang; Lee, Jeong-Bong
PUB. DATE
November 2004
SOURCE
Applied Physics Letters;11/22/2004, Vol. 85 Issue 21, p4845
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report a tunable nanophotonic device concept based on flexible photonic crystal, which is comprised of a periodic array of high-index dielectric material and a low-index flexible polymer. Tunability is achieved by applying mechanical force with nano-/microelectromechanical system actuators. The mechanical stress induces changes in the periodicity of the photonic crystal and consequently modifies the photonic band structure. To demonstrate the concept, we theoretically investigated the effect of mechanical stress on the anomalous refraction behavior and observed a very wide tunability in the beam propagation direction. This concept provides a means to achieve real-time, dynamic control of photonic band structure and will thus expand the utility of photonic crystal structures in advanced nanophotonic systems.
ACCESSION #
15155592

 

Related Articles

  • Quantified: Israel.  // Nature;4/27/2006, Vol. 440 Issue 7088, pxv 

    The article discusses a research about nonlinear photonic quasi-crystals. It references a study by Moti Segev and colleagues published within the issue. They discovered that this system is notable because light passing through the ten-fold symmetrical structure changes the crystal's properties,...

  • High-performance micromachined unimorph actuators based on electrostrictive poly(vinylidene fluoride–trifluoroethylene) copolymer. Xu, T.-B.; Cheng, Z.-Y.; Zhang, Q. M. // Applied Physics Letters;2/11/2002, Vol. 80 Issue 6, p1082 

    We report on the performance of micromachined unimorph actuators [(polymer micromachined actuator PMAT)] based on the electrostrictive poly(vinylidene fluoride–trifluoroethylene) [P(VDF–TrFE)] copolymer. Because of the high electrostrictive strain and high elastic energy density...

  • Self-organized minimum-energy structures for dielectric elastomer actuators. Kofod, G.; Paajanen, M.; Bauer, S. // Applied Physics A: Materials Science & Processing;Nov2006, Vol. 85 Issue 2, p141 

    When a stretched elastomer is laminated to a flat plastic frame, a complex shape is formed, which is termed a minimum-energy structure. It is shown how self-organized structures can be applied in the development of actuators with complex, out-of-plane actuationmodes. This unusual concept is then...

  • Experimental verification of apparent negative refraction in low-epsilon material in the microwave regime. von Rhein, A.; Pergande, D.; Greulich-Weber, S.; Wehrspohn, R. B. // Journal of Applied Physics;4/15/2007, Vol. 101 Issue 8, p086103 

    We analyze the effect of negative refraction in dielectric photonic crystals with almost circular equifrequency surfaces experimentally and theoretically. We found experimental evidence for negative refraction in the microwave regime in low-epsilon material and suggest an improved...

  • Infrared-laser-induced periodic surface structure in azo-dye polymer. Ivanov, Mario; Rochon, Paul // Applied Physics Letters;5/31/2004, Vol. 84 Issue 22, p4511 

    Second-harmonic and third-harmonic waves that are generated in an azo-polymer form diffraction patterns without any material deformation. The source is a single IR laser beam at λ=1064 nm that is weakly absorbed by the polymer. If the IR power is sufficiently high, laser-induced periodic (700...

  • Field-Flow Fractionation With Multiangle Light Scattering. Johann, Christoph // Pharmaceutical Technology Europe;Mar2005, Vol. 17 Issue 3, p31 

    The article analyzes field-flow fractionation with multiangle light scattering. Macromolecular characterization using asymmetrical-flow field-flow fractionation (AF-FFF) is a nondestructive, one-phase separation mechanism to determine molecular and macromolecular weights and particles in...

  • Influence of the surface termination to the point imaging by a photonic crystal slab with negative refraction. Sanshui Xiao; Min Qiu; Zhichao Ruan; Sailing He // Applied Physics Letters;11/8/2004, Vol. 85 Issue 19, p4269 

    Point imaging by a photonic crystal slab due to the negative refraction is studied theoretically. By investigating the transfer function of the imaging system, the influence of the surface termination to the imaging quality is analyzed. It is shown that an appropriate surface termination is...

  • Optical Autowaves in Photorefractive Ferroelectric Crystals. Morozovskaya, A.N.; Obukhovski&icaron;, V.V. // Optics & Spectroscopy;Feb2005, Vol. 98 Issue 2, p247 

    The effect of appearance of traveling structures, referred to as scattering autowaves, under illumination of photorefractive media by coherent light under certain conditions (power, wavelength, and focusing of pump radiation) is theoretically described. A model is proposed that takes into...

  • Infrared refractive indices of liquid crystals. Li, Jun; Wu, Shin-Tson; Brugioni, Stefano; Meucci, Riccardo; Faetti, Sandro // Journal of Applied Physics;4/1/2005, Vol. 97 Issue 7, p073501 

    The refractive indices of E7 liquid-crystal mixture were measured at six visible and two infrared (λ=1.55 and 10.6 μm) wavelengths at different temperatures, using Abbe and wedged cell refractometer methods, respectively. The experimental data of the visible wavelengths fit the extended...

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