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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 Sankararaman, Sankaranarayana Iyer (Avtor)
Datoteke:URL 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 Novo okno
COBISS.SI-ID:113331203 Novo okno
UDK:54
ISSN pri članku:1938-1387
DOI:10.2351/7.0000215 Novo okno
NUK URN:URN:SI:UNG:REP:7AK99ASF
Datum objave v RUNG:30.06.2022
Število ogledov:1135
Število prenosov:25
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Gradivo je del revije

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

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