Re: Exploding Wires in D2O, Simulates Cavitation Bubble Collapse?

[Frederick Sparber]

Things might get really interesting if Pd wires are exploded

in a 200-400 atmosphere pressure D2 gas.

 

Previously posted URL:

 

http://www.ias.ac.in/chemsci/Pdf-OctDec2003/Pc3336.pdf

 

Fred

----- Original Message -----

From: Frederick Sparber

To: vortex-l

Sent: 12/15/2005 4:51:18 AM

Subject: Re: Exploding Wires in D2O, Simulates Cavitation Bubble Collapse?

Of Interest for "Activated" Palladium?

http://www.ias.ac.in/pramana/v65/p815/abs.htm

Fluorescent silver nanoparticles via exploding wire technique

ALQUDAMI ABDULLAH and S ANNAPOORNI^*

Department of Physics and  Astrophysics, University of Delhi, Delhi 110 007, India

^*Corresponding author. E-mail: [EMAIL PROTECTED];

[EMAIL PROTECTED]

Abstract. Aqueous solution containing spherical silver

nanoparticles of  20--80 nm size have been generated  using a newly

developed novel electro-exploding wire (EEW) technique where thin silver

wires have been exploded in double distilled water. Structural properties of

the resulted nanoparticles have been studied by means of X-ray

diffractometer (XRD) and transmission electron microscopy (TEM). The

absorption spectrum of the aqueous solution of silver nanoparticles showed

the appearance of a broad surface plasmon resonance (SPR) peak centered at  a

wavelength of 390 nm. The theoretically generated SPR peak seems to be in

good agreement with the experimental one. Strong green fluorescence emission

was observed from the water-suspended silver nanoparticles excited with

light of wavelengths 340, 360 and 390 nm. The fluorescence of silver

nanoparticles could be due to the excitation of the surface plasmon coherent

electronic motion with the small size effect and the surface effect

considerations."

Fred