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Naslov: Ultralow duty cycle chopper instigated low power continuous wave laser assisted synthesis of silver nanoparticles : a novel approach Avtorji: ID Swapna, Mohanachandran Nair Sindhu (Avtor) ID Ashik, Abdul Rahim Sajeela Beevi (Avtor) ID Krishnanunni, Ramachandran Nair Amba Devi (Avtor) ID Nampoori, Vadakkedathu Parameswaran Narayanan (Avtor) ID Iyer Sankararaman, Sankaranarayana (Avtor) Datoteke: https://lia.scitation.org/doi/10.2351/7.0000215   Jezik: Angleški jezik Vrsta gradiva: Neznano Tipologija: 1.01 - Izvirni znanstveni članek Organizacija: UNG - Univerza v Novi Gorici Opis: This paper is the first report of advancement in the drastic reduction of the laser power density from 105 to 7.5 W/cm2 for the synthesis of silver nanoparticles (SNPs) using a low power (60 mW) continuous-wave (cw) laser and a specially designed ultralow duty cycle (3%) optical chopper wheel for modulating the laser beam at low frequencies (2 Hz). The target is irradiated by keeping it in a liquid medium at 40–60 °C to produce quantum dots to SNPs of size less than 40 nm. The UV-visible spectroscopic and electron microscopic analyses confirm the formation of quantum dots and SNPs of size-dependent bandgap energy varying from 1.92 to 2.37 eV. The photoluminescence studies not only support the above observations but also reveal the blue emission upon UV excitation through the chromaticity diagram. The proposed greener approach using the low power cw laser is cost-effective when compared with the high-power laser-assisted synthesis of SNPs reported until now. Ključne besede: cw laser, silver nanoparticle, ultralow duty cycle, chopper Leto izida: 2020 Št. strani: str. 042017-1-042017-8 Številčenje: Vol. 32, iss. 4 PID: 20.500.12556/RUNG-7405  COBISS.SI-ID: 113331203  UDK: 54 ISSN pri članku: 1938-1387 DOI: 10.2351/7.0000215  NUK URN: URN:SI:UNG:REP:7AK99ASF Datum objave v RUNG: 30.06.2022 Število ogledov: 2075 Število prenosov: 27 Metapodatki:    Citiraj gradivo Navadno besedilo BibTeX EndNote XML EndNote/Refer RIS ABNT ACM Ref AMA APA Chicago 17th Author-Date Harvard IEEE ISO 690 MLA Vancouver : Kopiraj citat

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Naslov:	Journal of laser applications
Skrajšan naslov:	J. laser appl.
Založnik:	Chapman & Hall
ISSN:	1938-1387
COBISS.SI-ID:	521458457

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