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

Flickr Twitter iResearch App Facebook

BROWSE VOLUMES

Year Range: 
Search Issue | RSS Feeds RSS
Previous Issue Next Issue

28 Apr 2008

Volume 92, Issue 17, Articles (17xxxx)

Issue Cover Spotlight Figure

Appl. Phys. Lett. 92, 173301 (2008); http://dx.doi.org/10.1063/1.2912822 (3 pages)

Takeo Minari, Masataka Kano, Tetsuhiko Miyadera, Sui-Dong Wang, Yoshinobu Aoyagi, Mari Seto, Takashi Nemoto, Seiji Isoda, and Kazuhito Tsukagoshi
Enlarge Image | Read More
Return to All Sections
back to top
RSS Feeds

Spatial mapping of the inverse decay length using scanning tunneling microscopy

R. J. de Vries, A. Saedi, D. Kockmann, A. van Houselt, B. Poelsema, and H. J. W. Zandvliet

Appl. Phys. Lett. 92, 174101 (2008); http://dx.doi.org/10.1063/1.2917716 (3 pages) | Cited 5 times

Online Publication Date: 28 April 2008

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We present a scanning tunneling spectroscopy technique that allows one to make spatial maps of the characteristic length, i.e., the inverse decay length (κ), in electron tunneling. The method requires that the tunneling current i and its first and second derivative with distance di/dz and d2i/dz2, respectively, are simultaneously recorded. The derivatives di/dz and d2i/dz2 are recorded using a lock-in technique. A spatial map of κ provides valuable information on the electronic structure of surfaces, especially in case of semiconductors, nanostructured surfaces and molecules at surfaces. We have coined this spectroscopic technique κ microscopy.
Show PACS
68.37.Ef Scanning tunneling microscopy (including chemistry induced with STM)
73.20.-r Electron states at surfaces and interfaces

Influence of water acidity on ozone decay time and its applications

Han Y. Lee, Han S. Uhm, Yi F. Hong, and Yun H. Park

Appl. Phys. Lett. 92, 174102 (2008); http://dx.doi.org/10.1063/1.2918015 (3 pages) | Cited 3 times

Online Publication Date: 28 April 2008

Full Text: Read Online (HTML) | Download PDF

Show Abstract
The increase in ozone decay time by lowering the pH value of water from pH = 7 to 3 is observed. The decay time drastically decreases as the ethanol concentration increases. It is also noted that the ozone decay times in the electrolyzed ozone water and in the acidic ozone water are identical to each other if they have the same pH value. A simple analytical estimation of viable microbe number after contact with acidic ozone water agrees remarkably well with experimental data, demonstrating the capability of cleaning a large surface area contaminated by toxic biological agents.
Show PACS
82.45.Tv Bioelectrochemistry
82.45.Hk Electrolysis

Free space measurement of the cross-polarized transmission band of a bianisotropic left-handed metamaterial

Xiangxiang Cheng, Hongsheng Chen, Tao Jiang, Lixin Ran, and Jin Au Kong

Appl. Phys. Lett. 92, 174103 (2008); http://dx.doi.org/10.1063/1.2919046 (3 pages) | Cited 4 times

Online Publication Date: 1 May 2008

Full Text: Read Online (HTML) | Download PDF

Show Abstract
A left-handed metamaterial based on a bianisotropic S-ring resonator is fabricated. By shorting some of the horizontal arms of the paired S-rings, net electric (magnetic) dipoles accumulate under certain magnetic (electric) field induction, which results in a magnetoelectric coupling effect. Free space experimental measurements are carried out and the experimental results demonstrate the cross polarization effect around the left-handed pass band of the metamaterial. The simple planar configuration of the structure also indicates the superiority of this inclusion in the realization of bianisotropic left-handed metamaterials.
Show PACS
42.25.Ja Polarization
42.70.Nq Other nonlinear optical materials; photorefractive and semiconductor materials
42.79.-e Optical elements, devices, and systems

Effect of pressure and light on the spin transition behavior of the dinuclear iron(II) compound [FeII2(PMAT)2](BF4)4⋅DMF

Ashis Bhattacharjee, Vadim Ksenofontov, Jonathan A. Kitchen, Nicholas G. White, Sally Brooker, and Philipp Gütlich

Appl. Phys. Lett. 92, 174104 (2008); http://dx.doi.org/10.1063/1.2911918 (3 pages) | Cited 10 times

Online Publication Date: 1 May 2008

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We present the results of our investigation into the effects of pressure and light on the high spin⇆low spin transition behavior of the dinuclear iron(II) compound [FeII2(PMAT)2](BF4)4⋅DMF. It is found that increased pressure favors the stabilization of the system through a transition from the (HS-HS) state to the (HS-LS) state. Interestingly, even under the pressure of 10.3 kbar and low temperatures, there is no evidence of the (LS-LS) form. Irradiation of the (HS-LS) state with light induces a transition from (HS-LS) to a (HS-HS) metastable state. These results underline the role of intermolecular interactions in the stabilization of the dinuclear lattice system.
Show PACS
75.30.Kz Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)
62.50.-p High-pressure effects in solids and liquids

Swelling and shrinking kinetics of a lamellar gel phase

David J. Fairhurst, Mark E. Baker, Neil Shaw, and Stefan U. Egelhaaf

Appl. Phys. Lett. 92, 174105 (2008); http://dx.doi.org/10.1063/1.2913762 (3 pages)

Online Publication Date: 2 May 2008

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We investigate the swelling and shrinking of Lβ lamellar gel phases composed of surfactant and fatty alcohol after contact with aqueous poly(ethyleneglycol) solutions. The height change Δh(t) is diffusionlike with a swelling coefficient S: Δh = Smath. On increasing polymer concentration, we observe sequentially slower swelling, absence of swelling, and finally shrinking of the lamellar phase. This behavior is summarized in a nonequilibrium diagram and the composition dependence of S quantitatively described by a generic model. We find a diffusion coefficient, the only free parameter, consistent with previous measurements.
Show PACS
61.25.he Polymer solutions
82.70.Gg Gels and sols
66.10.C- Diffusion and thermal diffusion

Compact and explicit physical model for lateral metal-oxide-semiconductor field-effect transistor with nanoelectromechanical system based resonant gate

L. Duraffourg, E. Colinet, E. Ollier, S. Hentz, P. Andreucci, B. Reig, and P. Robert

Appl. Phys. Lett. 92, 174106 (2008); http://dx.doi.org/10.1063/1.2918845 (3 pages) | Cited 7 times

Online Publication Date: 2 May 2008

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We propose a simple analytical model of a metal-oxide-semiconductor field-effect transistor with a lateral resonant gate based on the coupled electromechanical equations, which are self-consistently solved in time. All charge densities according to the mechanical oscillations are evaluated. The only input parameters are the physical characteristics of the device. No extra mathematical parameters are used to fit the experimental results. Theoretical results are in good agreement with the experimental data in static and dynamic operation. Our model is comprehensive and may be suitable for any electromechanical device based on the field-effect transduction.
Show PACS
85.30.Tv Field effect devices
85.30.De Semiconductor-device characterization, design, and modeling
Return to All Sections
Close

Google Calendar

ADVERTISEMENT

Go to AIP Home   © AIP Publishing LLC
close