Dynamic tunability and polarization anisotropy of elastic plasmonic device

AbstractDipole emission pattern imaging experiments on single chains of common conjugated polymers (solubilized poly phenylene vinylenes) isolated by ink-jet printing techniques have revealed surprising uniformity in transition moment orientation perpendicular to the support substrate. In addition to uniform orientation, these species show a number of striking differences in photochemical stability, polarization anisotropy,[1] and spectral signatures[2] with respect to similar (well-studied) molecules dispersed in dilute thin-films. Combined with molecular mechanics simulation, these results point to a structural picture of a folded macromolecule as a highly ordered cylindrical nanostructure whose long-axis (approximately collinear with the conjugation axis) is oriented, by an electrostatic interaction, perpendicular to the coverglass substrate. These results suggest a number of important applications in nanoscale photonics and molecular-scale optoelectronics.

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Strong and robust polarization anisotropy of site- and size-controlled single InGaN/GaN quantum wires

Scientific Reports ◽

10.1038/s41598-020-71590-x ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Hwan-Seop Yeo ◽

Kwanjae Lee ◽

Young Chul Sim ◽

Seoung-Hwan Park ◽

Yong-Hoon Cho

Keyword(s):

Quantum Wire ◽

Quantum Wires ◽

Geometrical Shape ◽

Optical Polarization ◽

Polarization Anisotropy ◽

Single Quantum ◽

Group Iii ◽

Highly Efficient ◽

Group Iii Nitride ◽

Size Controlled

Abstract Optical polarization is an indispensable component in photonic applications, the orthogonality of which extends the degree of freedom of information, and strongly polarized and highly efficient small-size emitters are essential for compact polarization-based devices. We propose a group III-nitride quantum wire for a highly-efficient, strongly-polarized emitter, the polarization anisotropy of which stems solely from its one-dimensionality. We fabricated a site-selective and size-controlled single quantum wire using the geometrical shape of a three-dimensional structure under a self-limited growth mechanism. We present a strong and robust optical polarization anisotropy at room temperature emerging from a group III-nitride single quantum wire. Based on polarization-resolved spectroscopy and strain-included 6-band k·p calculations, the strong anisotropy is mainly attributed to the anisotropic strain distribution caused by the one-dimensionality, and its robustness to temperature is associated with an asymmetric quantum confinement effect.

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Ripple period adjustment on SiC surface based on electron dynamics control and its polarization anisotropy

Applied Physics A ◽

10.1007/s00339-020-04181-2 ◽

2021 ◽

Vol 127 (1) ◽

Author(s):

Lei Jiao ◽

Defu Kong ◽

Xu Zhang ◽

Hongjian Wang ◽

Ye Dai ◽

...

Keyword(s):

Polarization Anisotropy ◽

Electron Dynamics ◽

Ripple Period

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Rapid identification of health care–associated infections with an integrated fluorescence anisotropy system

Science Advances ◽

10.1126/sciadv.1600300 ◽

2016 ◽

Vol 2 (5) ◽

pp. e1600300 ◽

Cited By ~ 26

Author(s):

Ki Soo Park ◽

Chen-Han Huang ◽

Kyungheon Lee ◽

Yeong-Eun Yoo ◽

Cesar M. Castro ◽

...

Keyword(s):

Health Care ◽

Fluorescence Anisotropy ◽

Bacterial Species ◽

Rapid Identification ◽

Integrated System ◽

Clinical Samples ◽

Drug Resistant ◽

Polarization Anisotropy ◽

Major Health ◽

Health Care Associated Infections

Health care–associated infections (HAIs) and drug-resistant pathogens have become a major health care issue with millions of reported cases every year. Advanced diagnostics would allow clinicians to more quickly determine the most effective treatment, reduce the nonspecific use of broad-spectrum antimicrobials, and facilitate enrollment in new antibiotic treatments. We present a new integrated system, polarization anisotropy diagnostics (PAD), for rapid detection of HAI pathogens. The PAD uses changes of fluorescence anisotropy when detection probes recognize target bacterial nucleic acids. The technology is inherently robust against environmental noise and economically scalable for parallel measurements. The assay is fast (2 hours) and performed on-site in a single-tube format. When applied to clinical samples obtained from interventional procedures, the PAD determined the overall bacterial burden, differentiated HAI bacterial species, and identified drug resistance and virulence status. The PAD system holds promise as a powerful tool for near-patient, rapid HAI testing.

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Effects of Different Quantum Coherence on the Pump–Probe Polarization Anisotropy of Photosynthetic Light-Harvesting Complexes: A Computational Study

The Journal of Physical Chemistry Letters ◽

10.1021/acs.jpclett.5b00690 ◽

2015 ◽

Vol 6 (10) ◽

pp. 1954-1960 ◽

Cited By ~ 16

Author(s):

Shuming Bai ◽

Kai Song ◽

Qiang Shi

Keyword(s):

Quantum Coherence ◽

Light Harvesting ◽

Computational Study ◽

Polarization Anisotropy ◽

Light Harvesting Complexes ◽

Pump Probe

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Control of optical polarization anisotropy in edge emitting luminescence of InAs/GaAs self-assembled quantum dots

Applied Physics Letters ◽

10.1063/1.1675923 ◽

2004 ◽

Vol 84 (11) ◽

pp. 1820-1822 ◽

Cited By ~ 48

Author(s):

P. Jayavel ◽

H. Tanaka ◽

T. Kita ◽

O. Wada ◽

H. Ebe ◽

...

Keyword(s):

Quantum Dots ◽

Optical Polarization ◽

Polarization Anisotropy ◽

Self Assembled

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ROTATIONAL PROPERTIES OF MICRO-SLABS DRIVEN BY LINEARLY-POLARIZED LIGHT

Journal of Nonlinear Optical Physics & Materials ◽

10.1142/s0218863505002815 ◽

2005 ◽

Vol 14 (03) ◽

pp. 375-382 ◽

Cited By ~ 4

Author(s):

CHIH-LANG LIN ◽

IRÈNE WANG ◽

MARC PIERRE ◽

ISABELLE COLOMBIER ◽

CHANTAL ANDRAUD ◽

...

Keyword(s):

Optical Tweezers ◽

Polarized Light ◽

Polarization Plane ◽

Light Polarization ◽

Good Prediction ◽

Polarization Anisotropy ◽

Two Photon ◽

Flat Slabs ◽

Linearly Polarized ◽

Optical Torque

We study the rotational motion of objects trapped in a focused laser beam (optical tweezers). Micrometer-sized flat slabs are fabricated using two-photon photopolymerization. These objects, trapped by linearly-polarized light, tend to align parallel to the polarization plane. This alignment effect is attributed to the polarization anisotropy resulting from the object shape and we present a simple electromagnetic approach to estimate the resulting optical torque. Micro-rotors of different sizes are studied experimentally. We characterize the behavior of micro-objects when the light polarization is rotated at constant speed. Our theoretical approach gives a good prediction of how the size of micro-objects affects their rotation efficiency.

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