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

14 Nov 2011

Volume 99, Issue 20, Articles (20xxxx)

Issue Cover Spotlight Figure

Appl. Phys. Lett. 99, 201102 (2011); http://dx.doi.org/10.1063/1.3647979 (3 pages)

Shota Yamada, Bong-Shik Song, Takashi Asano, and Susumu Noda
Enlarge Image | Read More
Return to All Sections
back to top
RSS Feeds

Ozone generation by rock fracture: Earthquake early warning?

Raúl A. Baragiola, Catherine A. Dukes, and Dawn Hedges

Appl. Phys. Lett. 99, 204101 (2011); http://dx.doi.org/10.1063/1.3660763 (3 pages) | Cited 1 time

Online Publication Date: 14 November 2011

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We report the production of up to 10 ppm ozone during crushing and grinding of typical terrestrial crust rocks in air, O2 and CO2 at atmospheric pressure, but not in helium or nitrogen. Ozone is formed by exoelectrons emitted by high electric fields, resulting from charge separation during fracture. The results suggest that ground level ozone produced by rock fracture, besides its potential health hazard, can be used for early warning in earthquakes and other catastrophes, such as landslides or land shifts in excavation tunnels and underground mines.
Show PACS
91.30.Px Earthquakes
91.90.+p Other topics in solid Earth physics (restricted to new topics in section 91)
91.60.Ba Elasticity, fracture, and flow

Experimental verification of photon angular momentum and vorticity with radio techniques

Fabrizio Tamburini, Elettra Mari, Bo Thidé, Cesare Barbieri, and Filippo Romanato

Appl. Phys. Lett. 99, 204102 (2011); http://dx.doi.org/10.1063/1.3659466 (3 pages) | Cited 5 times

Online Publication Date: 16 November 2011

Full Text: Read Online (HTML) | Download PDF

Show Abstract
The experimental evidence that radio techniques can be used for synthesizing and analyzing non-integer electromagnetic (EM) orbital angular momentum (OAM) of radiation is presented. The technique used amounts to sample, in space and time, the EM field vectors and digitally processing the data to calculate the vortex structure, the spatial phase distribution, and the OAM spectrum of the radiation. The experimental verification that OAM-carrying beams can be readily generated and exploited by using radio techniques paves the way to an entirely new paradigm of radar and radio communication protocols.
Show PACS
84.40.Ua Telecommunications: signal transmission and processing; communication satellites
84.40.Xb Telemetry: remote control, remote sensing; radar
41.20.Jb Electromagnetic wave propagation; radiowave propagation

Confocal imaging of laminar and turbulent mixing in a microscale multi-inlet vortex nanoprecipitation reactor

Yanxiang Shi, Rodney O. Fox, and Michael G. Olsen

Appl. Phys. Lett. 99, 204103 (2011); http://dx.doi.org/10.1063/1.3662042 (3 pages)

Online Publication Date: 16 November 2011

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Mass production of functional nanoparticles may be realized through flash nanoprecipiation in microscale reactors such as the multi-inlet vortex reactor (MIVR). A comprehensive understanding of mixing in the MIVR is required for process control and reactor design. Mixing in the MIVR is studied using a technique coupling laser induced fluorescence with confocal laser scanning microscopy. It is shown to provide meaningful qualitative and statistical data of the scalar field for analysis and comparison with numerical simulations. Data were collected for four flow rates, showing that mixing is incomplete even at the highest flow rate.
Show PACS
47.27.Cn Transition to turbulence
47.27.wj Turbulent mixing layers
47.32.-y Vortex dynamics; rotating fluids
47.51.+a Mixing
47.80.Jk Flow visualization and imaging
47.85.Np Fluidics
Return to All Sections
Close

Google Calendar

ADVERTISEMENT

Go to AIP Home   © AIP Publishing LLC
close