APL Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter iResearch App Facebook

BROWSE VOLUMES

Year Range: 
Search Issue | RSS Feeds RSS
Previous Issue

29 Dec 2003

Volume 83, Issue 26, pp. 5347-5569

Issue Cover Spotlight Figure

Appl. Phys. Lett. 83, 5527 (2003); http://dx.doi.org/10.1063/1.1637143 (3 pages)

Chad R. Barry, Nyein Z. Lwin, Wei Zheng, and Heiko O. Jacobs
Enlarge Image | Read More
Return to All Sections
back to top
RSS Feeds

Lock-in by molecular multiplication

Dieter Braun and Albert Libchaber

Appl. Phys. Lett. 83, 5554 (2003); http://dx.doi.org/10.1063/1.1629782 (3 pages) | Cited 6 times

Online Publication Date: 22 December 2003

Full Text: Read Online (HTML) | Download PDF

Show Abstract
A lock-in amplifier is physically realized at the level of fluorescent dye molecules. It is based on the general property that the emission of a fluorescent dye is the product of quantum efficiency and illumination intensity. For each pixel of a microscopic image, we measure in amplitude and phase an environment property of the dye, such as conformation, membrane voltage, or temperature. This lock-in implementation is highly parallel and reaches the ultimate photon shot noise limit. Using fast temperature oscillations, we apply it to measure the opening/closing kinetics of a molecular beacon (DNA hairpin) at 5 μs resolution. © 2003 American Institute of Physics.
Show PACS
33.50.Dq Fluorescence and phosphorescence spectra
87.15.M- Spectra of biomolecules
42.50.Ar Photon statistics and coherence theory
87.14.G- Nucleic acids
42.79.Pw Imaging detectors and sensors

Direct demonstration for changes in surface plasmon resonance induced by surface-enhanced Raman scattering quenching of dye molecules adsorbed on single Ag nanoparticles

Tamitake Itoh, Kazuhiro Hashimoto, Akifumi Ikehata, and Yukihiro Ozaki

Appl. Phys. Lett. 83, 5557 (2003); http://dx.doi.org/10.1063/1.1637442 (3 pages) | Cited 13 times

Online Publication Date: 22 December 2003

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Changes in surface plasmon resonance (SPR) bands induced by surface-enhanced Raman scattering (SERS) quenching of rhodamine 6G (R6G) molecules adsorbed on single Ag nanoparticles were investigated by light scattering microspectroscopy. It was found that SPR bands show a peak shift to a higher-energy side and that their intensities increase after SERS quenching. It was also revealed that these SPR bands are accompanied by an enhanced absorption band of R6G and that it has the same anisotropy as SERS and SPR bands. Assuming that the changes in the SPR bands are caused by the desorption of R6G molecules, we compared our experimental findings with calculation results obtained based on Rayleigh scattering theory. © 2003 American Institute of Physics.
Show PACS
78.68.+m Optical properties of surfaces
78.30.-j Infrared and Raman spectra
78.67.Bf Nanocrystals, nanoparticles, and nanoclusters
73.22.Lp Collective excitations
73.20.Mf Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)
68.43.-h Chemisorption/physisorption: adsorbates on surfaces
33.20.Fb Raman and Rayleigh spectra (including optical scattering)
68.47.De Metallic surfaces

Remote spectral measurement using entangled photons

Giuliano Scarcelli, Alejandra Valencia, Samuel Gompers, and Yanhua Shih

Appl. Phys. Lett. 83, 5560 (2003); http://dx.doi.org/10.1063/1.1637131 (3 pages) | Cited 10 times

Online Publication Date: 22 December 2003

Full Text: Read Online (HTML) | Download PDF

Show Abstract
By utilizing the frequency correlation of two-photon states produced via spontaneous parametric down conversion, the working principle of a remote spectrometer is demonstrated. With the help of a local scanning monochromator, the spectral transmission function of an optical element (or atmosphere) at remote locations can be characterized for wide range of wavelengths with expected high resolution. © 2003 American Institute of Physics.
Show PACS
42.65.Lm Parametric down conversion and production of entangled photons
07.60.Rd Visible and ultraviolet spectrometers
42.50.Dv Quantum state engineering and measurements

Microspherical surfaces with predefined focal lengths fabricated using microfluidic capillaries

Victor Lien, Yevgeny Berdichevsky, and Yu-Hwa Lo

Appl. Phys. Lett. 83, 5563 (2003); http://dx.doi.org/10.1063/1.1637455 (3 pages) | Cited 2 times

Online Publication Date: 22 December 2003

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We demonstrate a technique to fabricate spherical micromirrors with a programmable focal length by microfluidic capillary. Micromirrors with focal lengths of 13 μm, 19 μm, 28 μm, 50μm, and a flat mirror were fabricated and characterized. These micromirrors show a great ability to converge light into a focal point. This technique also introduces the concept of fabricating and integrating optical components with microfluidic channels. © 2003 American Institute of Physics.
Show PACS
42.82.Cr Fabrication techniques; lithography, pattern transfer
42.79.Bh Lenses, prisms and mirrors
85.85.+j Micro- and nano-electromechanical systems (MEMS/NEMS) and devices

Broadband locally resonant sonic shields

Kin Ming Ho, Chun Kwong Cheng, Z. Yang, X. X. Zhang, and Ping Sheng

Appl. Phys. Lett. 83, 5566 (2003); http://dx.doi.org/10.1063/1.1637152 (3 pages) | Cited 32 times

Online Publication Date: 22 December 2003

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We demonstrate a class of sonic shield materials based on the principle of locally resonant (LR) microstructures. Each local resonator is found to vibrate almost like an independent unit, and two layers of such resonators can even be regarded as a sonic crystal. By combining several LR layers of different resonant frequencies, a broadband (200–500 Hz) sound shield, with an average transmission intensity 11 dB lower than that dictated by mass density law, has been achieved. © 2003 American Institute of Physics.
Show PACS
43.50.Fe Noise masking systems
43.58.Kr Spectrum and frequency analyzers and filters; acoustical and electrical oscillographs; photoacoustic spectrometers; acoustical delay lines and resonators
43.20.El Reflection, refraction, diffraction of acoustic waves
Return to All Sections
Close

Google Calendar

ADVERTISEMENT

Go to AIP Home   © AIP Publishing LLC
close