Review of Scientific Instruments
Feedback | Help | Exit
Review of Scientific Instruments
Search:
   
 
 
 
Previous Article
Locking the cavity of a pulsed periodically poled lithium niobate optical parametric oscillator to the wavelength of a continuous-wave injection seeder by an "intensity-dip" method
Injection seeding by a single-mode continuous-wave (cw) laser provides a convenient way to achieve narrowband tunable operation of a laser with a broad spectral gain profile, or of an optical parametr...
Next Article
Transient temperature measurements in an ideal gas by laser-induced Rayleigh light scattering
A laser-induced Rayleigh light-scattering (RLS) system was assembled and used to noninvasively measure the transient molecular number density in an ideal gas. This information was used to find the tra...

Ultralow-angle dynamic light scattering with a charge coupled device camera based multispeckle, multitau correlator

Rev. Sci. Instrum. 70, 3214 (1999); doi:10.1063/1.1149894

Issue Date: August 1999

You are not logged in to this journal. Log in

Luca Cipelletti and D. A. Weitz
Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104
We use a charge coupled device (CCD) camera and a multi-tau software correlator to measure dynamic light scattering (DLS) at many angles simultaneously, from 0.07° to 5.1°. Real-time autocorrelation functions are calculated by averaging both over time and over CCD pixels, each corresponding to a different coherence area. In order to cover the wide spectrum of decay times associated with the large range of accessible angles, we adopt the multitau scheme, where the correlator channel spacing is quasilogarithmic rather than linear. A detailed analysis is presented of the effects of dark noise, stray light, and finite pixel area, and methods to correct the data for these effects are developed, making a CCD camera a viable alternative for a DLS detector. We test the apparatus on a dilute suspension of colloidal particles. Very good agreement is found between the particle radius derived from the CCD data, and that obtained with a conventional DLS setup. ©1999 American Institute of Physics.
History: Received 18 December 1998; accepted 11 May 1999
Permalink: http://link.aip.org/link/?RSINAK/70/3214/1
BUY THIS ARTICLE   (US$24)
Download PDF (100 kB) View Cart

KEYWORDS and PACS

Keywords
PACS
  • 42.79.Pw
    Optics Optical elements, devices, and systems Imaging detectors and sensors
  • 07.05.Hd
    Instruments, apparatus, components, and techniques common to several branches of physics and astronomy Computers in experimental physics Data acquisition: hardware and software
  • 42.30.Ms
    Optics Imaging and optical processing Speckle and moire patterns
  • 06.30.Bp
    Metrology, measurements, and laboratory procedures Measurements common to several branches of physics and astronomy Spatial dimensions (e.g., position, lengths, volume, angles, displacements, including nanometer-scale displacements)
  • 82.70.Kj
    Physical chemistry Disperse systems Emulsions and suspensions
  • YEAR: 1999

RELATED DATABASES


To view database links for this article,
you need to log in.
To view database links for this article,
you need to log in.

PUBLICATION DATA

ISSN:
0034-6748 (print)   1089-7623 (online)
Publisher:
AIP is a member of CrossRef AIP

REFERENCES (15)
View in Separate Window/Tab
For access to fully linked references, you need to log in. For access to fully linked references, you need to Log in.
  1. See, for example, B. J. Berne and R. Pecora, Dynamic Light Scattering (Wiley, New York, 1976).
  2. See, for example, J. W. Goodman, in Laser Speckles and Related Phenomena, edited by J. C. Dainty (Springer, Berlin, 1975).
  3. A. P. Y. Wong and P. Wiltzius, Rev. Sci. Instrum. 64, 2547 (1993).
  4. S. Kirsch, V. Frenz, W. Schärtl, E. Bartsch, and H. Sillescu, J. Chem. Phys. 104, 1758 (1996);
    5. E. Bartsch, V. Frenz, S. Kirsh, W. Schärtl, and H. Sillescu, Prog. Colloid Polym. Sci. 104, 40 (1997).
  5. S. B. Dierker, R. Pindak, R. M. Fleming, I. K. Robinson, and L. Berman, Phys. Rev. Lett. 75, 449 (1995).
  6. S. G. J. Mochrie et al., Phys. Rev. Lett. 78, 1275 (1997).
  7. O. K. C. Tsui and S. G. J. Mochrie, Phys. Rev. E 57, 2030 (1998).
  8. F. Ferri, Rev. Sci. Instrum. 68, 2265 (1997).
  9. K. Schätzel, in Dynamic Light Scattering. The Method and Some Applications, edited by W. Brown (Clarendon, Oxford, 1993).
  10. P. N. Pusey and W. Van Megen, Physica A 157, 705 (1989).
  11. J. G. H. Joosten, E. T. F. Geladé, and P. N. Pusey, Phys. Rev. A 42, 2161 (1990).
  12. J. Müller and T. Palberg, Prog. Colloid Polym. Sci. 100, 121 (1996).
  13. J. Z. Xue, D. J. Pine, S. T. Milner, X. L. Wu, and P. M. Chaikin, Phys. Rev. A 46, 6550 (1992).
  14. See, for example E. Jakemen, in Photon Correlation and Light Beating Spectroscopy, edited by H. Z. Cummins and E. R. Pike (Plenum, New York, 1974).
  15. L. Cipelletti, M. Carpineti, and M. Giglio, Phys. Rev. E 57, 3485 (1998).

CITING ARTICLES
For access to citing articles, you need to log in.
For access to citing articles, you need to Log in.


Copyright © American Institute of Physics