Effects of laser fluence, size, and shape of the laser focal spot in pulsed laser deposition using a multielemental target

ABSTRACTFilm growth in pulsed laser deposition (PLD) is described as a process of sorption of ablated species on the substrate surface. Film growth rate and composition are qualitatively analyzed as a function of laser fluence and ambient gas pressure. As an example, analysis of the film composition is carried out for BiSrCaCuO and PbZrTiO pulsed laser deposited films.

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Pulsed laser deposition of a-CNx:H films: the role of target-to-substrate distance and laser fluence

Applied Surface Science ◽

10.1016/s0169-4332(99)00394-3 ◽

2000 ◽

Vol 154-155 ◽

pp. 454-457 ◽

Cited By ~ 5

Author(s):

P González ◽

R Soto ◽

B León ◽

M Pérez-Amor ◽

T Szörényi

Keyword(s):

Pulsed Laser Deposition ◽

Laser Fluence ◽

Pulsed Laser ◽

Laser Deposition ◽

Substrate Distance

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Influence of laser fluence and laser repetition rate on the synthesis of aluminium nitride thin films by nitrogen-ion-assisted pulsed laser deposition

10.1117/12.456845 ◽

2002 ◽

Author(s):

Yeow W. Goh ◽

Yongfeng Lu ◽

ZhongMin Ren ◽

Tow Chong Chong

Keyword(s):

Thin Films ◽

Pulsed Laser Deposition ◽

Laser Fluence ◽

Repetition Rate ◽

Pulsed Laser ◽

Aluminium Nitride ◽

Laser Deposition ◽

Laser Repetition Rate ◽

Nitrogen Ion

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An investigation into the effects of high laser fluence on hydroxyapatite/calcium phosphate films deposited by pulsed laser deposition

Applied Surface Science ◽

10.1016/j.apsusc.2009.07.062 ◽

2009 ◽

Vol 256 (1) ◽

pp. 76-80 ◽

Cited By ~ 15

Author(s):

Le Quang Tri ◽

Daniel H.C. Chua

Keyword(s):

Calcium Phosphate ◽

Pulsed Laser Deposition ◽

Laser Fluence ◽

Pulsed Laser ◽

Laser Deposition ◽

High Laser Fluence ◽

High Laser

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Protein-Drug Interaction in the Nanocomposites Prepared by UV and IR Pulsed Laser Deposition

MRS Proceedings ◽

10.1557/proc-849-kk3.11 ◽

2004 ◽

Vol 849 ◽

Author(s):

J. Sagawa ◽

S. Nagare ◽

M. Senna

Keyword(s):

Secondary Structure ◽

Pulsed Laser Deposition ◽

Laser Fluence ◽

Vibrational Excitation ◽

Pulsed Laser ◽

Laser Deposition ◽

Ir Laser ◽

Ft Ir ◽

Β Sheet ◽

Protein Bovine Serum Albumin

ABSTRACTProtein (bovine serum albumin; BSA)-drug (indomethacin; IM) nanocomposites were prepared by pulsed laser deposition (PLD) at two wavelengths, infrared (1064nm) and ultraviolet (266nm), from uniformly dispersed mixture of BSA and IM as a target. Composite particulates under 50nm were obtained with the coexistence of larger agglomerates over 200nm. Primary structure of BSA is preserved after laser irradiation by both wavelengths. Effects of electronic and vibrational excitation by UV and IR laser respectively on the secondary structure of the nanocomposites were examined by Fourier transform infrared spectroscopy (FT-IR). Chemical shift towards lower wavenumber and a broadening of the amide I band due to PLD treatment were observed by FT-IR. From curve fitting of the amide I into five components, we found the decrease in the ratio of α-helical / β-sheet components with increasing the laser fluence. The secondary structure of BSA is more sensitive to the laser fluence than the wavelength.

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