scholarly journals Kinetics of molecular decomposition under irradiation of gold nanoparticles with nanosecond laser pulses—A 5-Bromouracil case study

2020 ◽  
Vol 152 (12) ◽  
pp. 124712 ◽  
Author(s):  
Telma S. Marques ◽  
Robin Schürmann ◽  
Kenny Ebel ◽  
Christian Heck ◽  
Małgorzata A. Śmiałek ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Laser Pulses ◽  
Nanosecond Laser ◽  
Molecular Decomposition ◽  
Nanosecond Laser Pulses ◽  
Kinetics Of

Role of electron heating in efficient interaction of a nanosecond laser with the cluster media: a case study on tetrahydrofuran cluster system

RSC Advances ◽  
2016 ◽  
Vol 6 (91) ◽  
pp. 87897-87904 ◽  
Author(s):  
Pramod Sharma ◽  
Soumitra Das ◽  
Rajesh K. Vatsa
Keyword(s):  
Mass Spectrometer ◽  
Time Of Flight ◽  
Laser Pulses ◽  
Nanosecond Laser ◽  
Electron Heating ◽  
Flight Mass Spectrometer ◽  
System P ◽  
Nanosecond Laser Pulses

Interaction of tetrahydrofuran clusters with nanosecond laser pulses has been investigated at 532 and 1064 nm, using a time-of-flight mass spectrometer and home-built electron analyzer setup.

scholarly journals Relaxation and crystallization kinetics of amorphous germanium films by nanosecond laser pulses

1994 ◽  
Vol 75 (11) ◽  
pp. 7287-7291 ◽  
Author(s):  
F. Vega ◽  
R. Serna ◽  
C. N. Afonso ◽  
D. Bermejo ◽  
G. Tejeda
Keyword(s):  
Crystallization Kinetics ◽  
Laser Pulses ◽  
Nanosecond Laser ◽  
Amorphous Germanium ◽  
Nanosecond Laser Pulses ◽  
Germanium Films ◽  
Kinetics Of

PREPARATION OF GOLD NANOPARTICLES WITH NARROW SIZE DISTRIBUTIONS AND WELL DEFINED SHAPES

2005 ◽  
Vol 19 (15n17) ◽  
pp. 2604-2609 ◽  
Author(s):  
FRANK HUBENTHAL ◽  
CHRISTIAN HENDRICH ◽  
HASSAN OUACHA ◽  
DAVID BLÁZQUEZ SÁNCHEZ ◽  
FRANK TRÄGER
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Axial Ratio ◽  
Laser Pulses ◽  
Nanosecond Laser ◽  
Shape Distribution ◽  
Size And Shape ◽  
Nanosecond Laser Pulses

In this contribution, we present the results of recent experiments with the objective of tailoring the size and shape of gold nanoparticles with nanosecond laser pulses. The technique is based on the size and shape dependent surface plasmon resonance frequencies of metal nanoparticles. In our recent experiments gold nanoparticles were prepared by deposition of atoms on dielectric substrates followed by diffusion and nucleation. This usually results in ensembles of oblate nanoparticles with a broad size and shape distribution. Irradiating the gold particles during growth with nanosecond laser pulses makes it possible to produce nanoparticles with a predetermined axial ratio independent of size. For example, irradiating gold nanoparticles with a photon energy of 1.65 eV during growth stabilizes an axial ratio of a/b = 0.14, a being the short axis and b the long axis of the ellipsoidal nanoparticles. Furthermore, post-growth irradiation permits tailoring the average size of the nanoparticles by laser induced surface diffusion and evaporation of atoms. In principle, it is possible to eliminate all particles of undesired sizes by choosing the appropriate photon energies. We demonstrate that narrowing of the width of the surface plasmon resonance from initially 0.52 eV (half width at half maximum) to 0.2 eV is possible by using a single laser frequency. Combining both methods, i.e. laser irradiation during and after growth, finally results in a narrow size and shape distribution of the particles.

Kinetics of ejected particles during breakdown in fused silica by nanosecond laser pulses

2011 ◽  
Vol 98 (5) ◽  
pp. 051901 ◽  
Author(s):  
Rajesh N. Raman ◽  
Raluca A. Negres ◽  
Stavros G. Demos
Keyword(s):  
Laser Pulses ◽  
Fused Silica ◽  
Nanosecond Laser ◽  
Nanosecond Laser Pulses ◽  
Kinetics Of

Interaction of gold nanoparticles with nanosecond laser pulses: Nanoparticle heating

2011 ◽  
Vol 257 (12) ◽  
pp. 5456-5459 ◽  
Author(s):  
N.N. Nedyalkov ◽  
S.E. Imamova ◽  
P.A. Atanasov ◽  
R.A. Toshkova ◽  
E.G. Gardeva ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Laser Pulses ◽  
Nanosecond Laser ◽  
Nanosecond Laser Pulses
Sign in / Sign up

Export Citation Format

Share Document