Nanostructured Au film produced by pulsed laser deposition in air at atmospheric pressure

Silver nanoparticle films by flowing gas atmospheric pulsed laser deposition and application to surface‐enhanced Raman spectroscopy

“…11 Looking into the potential impact of this study, later on, in the last two decades, tremendous research were further projected by the scientific community with the aim to bring the nanofabrication method one step closer for practical applications and interesting results were reported. [11][12][13][14][15][16][17][18][19][20][21][22] Jadhav et al 12 performed a comparative study of graphite films produced in vacuum and air with the substrate at 50 and 2 to 3 mm, respectively, and laser fluence values of 10 and 20 J cm −2 . A nanocrystalline graphite film with superior field emission behavior was obtained in air compared to an amorphous film formed in vacuum.…”

“…Similarly, Ag NPs were deposited on glass slides with ablation in open air conditions using the laser pulses of 532 nm and pulse duration of 50 ns. 20 Recently, various deposition geometries were used at atmospheric pressure and the dependence of surface morphology of Au nanostructures deposited with each geometry was investigated. 21 By varying the angle between the ablation plume and the substrate, the deposit obtained was different and the Au nanostructured nanocolumns of different sizes and densities were obtained.…”

“…[4][5][6][7][8][9] Different approaches for the synthesis of these NP films exist today and have been productively applied; however, APLD emerges as the most recent and striking gas-phase approach utilized for nanofabrication. [11][12][13][14][15][16][17][18][19][20][21][22][23][24] For laser ablation at atmospheric pressure, a high-density plasma (varying from n e 1.59 to 2.27× 10 18 cm −3 ) is formed for various ambient environments compared to a free expansion. 14 Thus for APLD, the density of laser-produced plasma plume is several orders of magnitude higher than encountered for a low-pressure plasma in vacuum or background gas.…”

Au nanostructure fabrication by pulsed laser deposition in open air: Influence of the deposition geometry

“…A practical application of the method has already been demonstrated, namely, the formation of hard coatings [ 22 ]. PLD in open air could also lead to the formation of highly porous structures on different substrates [ 19 , 21 ]. Our previous results showed that the morphology of gold structures produced by PLD in open air depends on the target–substrate distance, laser fluence, number of laser pulses applied, and the laser wavelength used [ 23 – 24 ].…”

“…Furthermore, a decrease in the target–substrate distance below 3 mm resulted in the formation of denser, larger structures compared to deposition at larger distances [ 23 ]. In the latter case, micrometer-sized droplets and fine nanowires around and over them were obtained [ 21 , 23 ]. Despite the recent significant progress in the field, the influence of the deposition geometry of PLD in open air on the surface morphology of the structures produced has yet to be thoroughly studied.…”