Active Modulation of Nanorod Plasmons

被引：118

作者：

Khatua, Saumyakanti ^{[1
]}

Chang, Wei-Shun ^{[1
]}

Swanglap, Pattanawit ^{[1
]}

Olson, Jana ^{[1
]}

Link, Stephan ^{[1
,2
]}

机构：

[1] Rice Univ, Dept Chem, Lab Nanophoton, Houston, TX 77005 USA

[2] Rice Univ, Dept Elect & Comp Engn, Lab Nanophoton, Houston, TX 77005 USA

来源：

NANO LETTERS | 2011年 / 11卷 / 09期

关键词：

Gold nanorods; surface plasmon resonance; single particle scattering spectroscopy; liquid crystal; active plasmonics; LIQUID-CRYSTAL; ELECTRIC-FIELD; SILVER NANOPARTICLES; GOLD; RESONANCES; DEVICES; SURFACE; SENSITIVITY; NANOPRISMS; SCATTERING;

D O I：

10.1021/nl201876r

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Confining visible light to nanoscale dimensions has become possible with surface plasmons. Many plasmonic elements have already been realized. Nanorods, for example, function as efficient optical antennas. However, active control of the plasmonic response remains a roadblock for building optical analogues of electronic circuits. We present a new approach to modulate the polarized scattering intensities of individual gold nanorods by 100% using liquid crystals with applied voltages as low as 4 V. This novel effect is based on the transition from a homogeneous to a twisted nematic phase of the liquid crystal covering the nanorods. With our method it will be possible to actively control optical antennas as well as other plasmonic elements.

引用

页码：3797 / 3802

页数：6

共 36 条

[1] Electrically controlled director slippage over a photosensitive aligning surface; in-plane sliding mode [J].

Andrienko, D ;

Barbet, F ;

Bormann, D ;

Kurioz, Y ;

Kwon, SB ;

Reznikov, Y ;

Warenghem, M .

LIQUID CRYSTALS, 2000, 27 (03) :365-370

[2] Biosensing with plasmonic nanosensors [J].

Anker, Jeffrey N. ;

Hall, W. Paige ;

Lyandres, Olga ;

Shah, Nilam C. ;

Zhao, Jing ;

Van Duyne, Richard P. .

NATURE MATERIALS, 2008, 7 (06) :442-453

[3]

Atwater HA, 2010, NAT MATER, V9, P205, DOI [10.1038/nmat2629, 10.1038/NMAT2629]

[4] DYNAMICS OF LIQUID-CRYSTAL TWIST CELLS [J].

BERREMAN, DW .

APPLIED PHYSICS LETTERS, 1974, 25 (01) :12-15

[5] Tuning of an Optical Dimer Nanoantenna by Electrically Controlling Its Load Impedance [J].

Berthelot, Johann ;

Bouhelier, Alexandre ;

Huang, Caijin ;

Margueritat, Jeremie ;

Colas-des-Francs, Gerard ;

Finot, Eric ;

Weeber, Jean-Claude ;

Dereux, Alain ;

Kostcheev, Sergei ;

El Ahrach, Hicham Ibn ;

Baudrion, Anne-Laure ;

Plain, Jerome ;

Bachelot, Renaud ;

Royer, Pascal ;

Wiederrecht, Gary P. .

NANO LETTERS, 2009, 9 (11) :3914-3921

[6] Single molecule spectroscopy of conjugated polymer chains in an electric field-aligned liquid crystal [J].

Chang, Wei-Shun ;

Link, Stephan ;

Yethiraj, Arun ;

Barbara, Paul F. .

JOURNAL OF PHYSICAL CHEMISTRY B, 2008, 112 (02) :448-453

[7] Electrically controlled surface plasmon resonance frequency of gold nanorods [J].

Chu, K. C. ;

Chao, C. Y. ;

Chen, Y. F. ;

Wu, Y. C. ;

Chen, C. C. .

APPLIED PHYSICS LETTERS, 2006, 89 (10)

[8] Electronically controlled surface plasmon dispersion and optical transmission through metallic hole arrays using liquid crystal [J].

Dickson, Wayne ;

Wurtz, Gregory A. ;

Evans, Paul R. ;

Pollard, Robert J. ;

Zayats, Anatoly V. .

NANO LETTERS, 2008, 8 (01) :281-286

[9] Aligning and reorienting carbon nanotubes with nematic liquid crystals [J].

Dierking, I ;

Scalia, G ;

Morales, P ;

LeClere, D .

ADVANCED MATERIALS, 2004, 16 (11) :865-869

[10] Nanomotor rotates microscale objects [J].

Eelkema, R ;

Pollard, MM ;

Vicario, J ;

Katsonis, N ;

Ramon, BS ;

Bastiaansen, CWM ;

Broer, DJ ;

Feringa, BL .

NATURE, 2006, 440 (7081) :163-163

← 1 2 3 4 →