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

5 Dec 2011

Volume 99, Issue 23, Articles (23xxxx)

Issue Cover Spotlight Figure

Appl. Phys. Lett. 99, 233701 (2011); http://dx.doi.org/10.1063/1.3651756 (3 pages)

Melis Hazar, Robert L. Steward, Jr., Chia-Jung Chang, Cynthia J. Orndoff, Yukai Zeng, Mon-Shu Ho, Philip R. LeDuc, and Chao-Min Cheng
Enlarge Image | Read More
Return to All Sections
back to top
RSS Feeds

Diffusion and incorporation of Cd in solar-grade Cu(In,Ga)Se2 layers

K. Hiepko, J. Bastek, R. Schlesiger, G. Schmitz, R. Wuerz, and N. A. Stolwijk

Appl. Phys. Lett. 99, 234101 (2011); http://dx.doi.org/10.1063/1.3665036 (3 pages) | Cited 5 times

Online Publication Date: 5 December 2011

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We examined Cd diffusion in Cu(In,Ga)Se2 layers by means of the radiotracer technique. Depth profiles of 109Cd were determined by ion-beam sputter-sectioning upon isothermal diffusion in the range from 197 to 425 °C. The Cd diffusivity can be described by the Arrhenius equation DCd = 4.8 × 10−4 exp (−1.04 eV/kBT )cm2s−1. Atom-probe tomography on a sample saturated with natural Cd at 450 °C revealed its homogeneous incorporation over the crystal volume.
Show PACS
66.30.J- Diffusion of impurities
66.30.Xj Thermal diffusivity

Silicon two-dimensional phononic crystal resonators using alternate defects

Nan Wang, Fu-Li Hsiao, Moorthi Palaniapan, and Chengkuo Lee

Appl. Phys. Lett. 99, 234102 (2011); http://dx.doi.org/10.1063/1.3665956 (3 pages) | Cited 1 time

Online Publication Date: 5 December 2011

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We present the numerical and experimental investigations of micromechanical resonators made by creating alternate defects with different central-hole radii (r′) in a two-dimensional (2-D) phononic crystal (PnC) slab. The PnC structures were fabricated by etching a square array of cylindrical air holes in a 10 μm thick free-standing silicon plate using a CMOS-compatible process. Preliminary experimental results show that the performance of the PnC resonators in terms of resonant frequency, Q factor, and insertion loss (IL) is highly dependent on r′. A Q factor of more than 3000 is achieved for the case of r′ = 6 μm while all the designed resonators with alternate defects have higher Q factor and lower IL than the resonators based on the normal Fabry-Perot structure due to the reduction in the mode mismatch.
Show PACS
85.85.+j Micro- and nano-electromechanical systems (MEMS/NEMS) and devices
63.20.kp Phonon-defect interactions
07.10.Cm Micromechanical devices and systems
81.65.Cf Surface cleaning, etching, patterning

Soft cluster-induced desorption and ionization of biomolecules—Influence of surface load and morphology on desorption efficiency

M. Baur, B.-J. Lee, C. R. Gebhardt, and M. Dürr

Appl. Phys. Lett. 99, 234103 (2011); http://dx.doi.org/10.1063/1.3664348 (3 pages) | Cited 2 times

Online Publication Date: 5 December 2011

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Neutral cluster-induced desorption and ionization of oligopeptides both from μm-thick films as well as from surfaces prepared with submonolayer surface concentration of biomolecules was investigated by means of mass spectrometry. Highest signal intensity was observed from thick films indicating efficient desorption from bulk-like material. In the submonolayer regime, the ion signal of the desorbed biomolecules was found to depend nonlinearly on the amount of substance of the wet-chemically applied biomolecules; the observation is correlated to the formation of aggregates of biomolecules on the surface.
Show PACS
87.15.R- Reactions and kinetics
68.43.Nr Desorption kinetics
82.80.Ms Mass spectrometry (including SIMS, multiphoton ionization and resonance ionization mass spectrometry, MALDI)

Effect of air breakdown with a focusing lens on ultrashort laser ablation

Wenqian Hu, Yung C. Shin, and Galen King

Appl. Phys. Lett. 99, 234104 (2011); http://dx.doi.org/10.1063/1.3665631 (3 pages)

Online Publication Date: 6 December 2011

Full Text: Read Online (HTML) | Download PDF

Show Abstract
The effect of air breakdown on ultrashort laser ablation is investigated in this letter using an integrated simulation method on atomistic level. The generation of air breakdown with different laser peak power densities in the range from 1013 to 1016 W/cm2 and various focusing conditions is analyzed. Air breakdown is generated directly from laser energy absorption through avalanche ionization at a high power density (over 1014 W/cm2), while at a lower power density, air breakdown is assisted by a metal target near the focal region. The laser energy loss due to air breakdown and its effect on laser ablation are studied.
Show PACS
52.80.-s Electric discharges
52.38.Mf Laser ablation
52.65.-y Plasma simulation

Planar jumping-drop thermal diodes

Jonathan B. Boreyko, Yuejun Zhao, and Chuan-Hua Chen

Appl. Phys. Lett. 99, 234105 (2011); http://dx.doi.org/10.1063/1.3666818 (3 pages) | Cited 11 times

Online Publication Date: 9 December 2011

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Phase-change thermal diodes rectify heat transport much more effectively than solid-state ones, but are limited by either the gravitational orientation or one-dimensional configuration. Here, we report a planar phase-change diode scalable to large areas with an orientation-independent diodicity of over 100, in which water/vapor is enclosed by parallel superhydrophobic and superhydrophilic plates. The thermal rectification is enabled by spontaneously jumping dropwise condensate which only occurs when the superhydrophobic surface is colder than the superhydrophilic surface.
Show PACS
07.20.-n Thermal instruments and apparatus

Rapid, substrate-independent thickness determination of large area graphene layers

Dinesh K. Venkatachalam, Patrick Parkinson, Simon Ruffell, and Robert G. Elliman

Appl. Phys. Lett. 99, 234106 (2011); http://dx.doi.org/10.1063/1.3664633 (3 pages) | Cited 1 time

Online Publication Date: 9 December 2011

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Phase-shifting interferometric imaging is shown to be a powerful analytical tool for studying graphene films, providing quantitative analysis of large area samples with an optical thickness resolution of ≤0.05 nm. The technique is readily able to identify single sheets of graphene and to quantitatively distinguish between layers composed of multiple graphene sheets. The thickness resolution of the technique is shown to result from the phase shift produced by a graphene film as incident and reflected light pass through it, rather than from path-length differences produced by surface height variations. This is enhanced by the high refractive index of graphene, estimated in this work to be nG = 2.99 ± 0.18.
Show PACS
81.05.ue Graphene
78.67.Wj Optical properties of graphene
78.20.Ci Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)
68.65.Pq Graphene films
61.48.Gh Structure of graphene
Return to All Sections
Close

Google Calendar

ADVERTISEMENT

Go to AIP Home   © AIP Publishing LLC
close