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

19 Oct 2009

Volume 95, Issue 16, Articles (16xxxx)

Issue Cover Spotlight Figure

Appl. Phys. Lett. 95, 162501 (2009); http://dx.doi.org/10.1063/1.3248257 (3 pages)

W. W. Lei, D. Liu, P. W. Zhu, X. H. Chen, Q. Zhao, G. H. Wen, Q. L. Cui, and G. T. Zou
Enlarge Image | Read More
Return to All Sections
back to top
RSS Feeds

Remediation of Cr(VI) by biogenic magnetic nanoparticles: An x-ray magnetic circular dichroism study

N. D. Telling, V. S. Coker, R. S. Cutting, G. van der Laan, C. I. Pearce, R. A. D. Pattrick, E. Arenholz, and J. R. Lloyd

Appl. Phys. Lett. 95, 163701 (2009); http://dx.doi.org/10.1063/1.3249578 (3 pages) | Cited 8 times

Online Publication Date: 21 October 2009

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Biologically synthesized magnetite (Fe3O4) nanoparticles are studied using x-ray absorption and x-ray magnetic circular dichroism following exposure to hexavalent Cr solution. By examining their magnetic state, Cr cations are shown to exist in trivalent form on octahedral sites within the magnetite spinel surface. The possibility of reducing toxic Cr(VI) into a stable, nontoxic form, such as a Cr3+-spinel layer, makes biogenic magnetite nanoparticles an attractive candidate for Cr remediation.
Show PACS
87.85.Rs Nanotechnologies-applications
78.70.Dm X-ray absorption spectra
78.20.Ls Magneto-optical effects
81.16.Fg Supramolecular and biochemical assembly
61.46.Df Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)
75.50.Tt Fine-particle systems; nanocrystalline materials

A versatile liquid-core/liquid-twin-cladding waveguide micro flow cell fabricated by rapid prototyping

M. Rosenauer and M. J. Vellekoop

Appl. Phys. Lett. 95, 163702 (2009); http://dx.doi.org/10.1063/1.3249771 (3 pages) | Cited 4 times

Online Publication Date: 21 October 2009

Full Text: Read Online (HTML) | Download PDF

Show Abstract
In this paper we present the design and operation of a micro flow cell comprising a liquid-core/liquid-twin-cladding waveguide for on-chip fluorescence spectroscopy based on evanescent field illumination. The application of an inner (sample) and outer cladding stream minimizes the sample volume for optical measurements and ensures the analyte position in the evanescent field for excitation at the core/cladding interface. The fiber-chip-coupled laser light is guided by the fluidic waveguide providing a uniform excitation along the analysis channel. Fluorescence intensity measurements of different sample solutions were conducted to illustrate the operational quality. The fluidics device is fabricated by laser microstereolithography in 1.5 h.
Show PACS
87.80.Ek Mechanical and micromechanical techniques
87.64.kv Fluorescence
85.85.+j Micro- and nano-electromechanical systems (MEMS/NEMS) and devices
42.79.Gn Optical waveguides and couplers
Return to All Sections
Close

Google Calendar

ADVERTISEMENT

Go to AIP Home   © AIP Publishing LLC
close