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Article
Effect of annealing on the stoichiometry and plasmonic properties of PLD nanostructured semi-transparent copper thin film using BEMA
The plasmonic nature of Cu nanoparticles embedded in the glass is characterized and its dependence on annealing temperature and deposition time is reported. The nanostructured copper metallic thin films were f...
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Article
Investigation of the exuberant cavitation bubble and shock wave dynamics in pulsed laser ablation of copper in distilled water
Pulsed laser ablation in liquid is a very efficient technique for the synthesis of nanoparticles in colloidal form. In order to maximize the applicability of this technique, it is imperative to understand the ...
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Chapter and Conference Paper
Synthesis of Nanoparticles via Pulsed High-Power Laser in Liquid
The focusing of a pulsed high-power laser inside a liquid medium leads to immediate plasma formation which accompanies mechanical processes of shockwaves and cavitation bubbles. The history of underwater laser...
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Article
Time and space-resolved laser-induced breakdown spectroscopy on molybdenum in air
In the present work, laser-induced plasma (LIP) of Mo is studied using both time and space resolved laser-induced breakdown spectroscopy (LIBS) in air as a function of incident laser energy. For this a second ...
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Article
Tailoring of stoichiometry and band-tail emission in PLD a-SiC thin films by varying He deposition pressure
The present work focuses on the effect of He pressure (vacuum, 10−2–5 mbar) on structural and optical properties of amorphous silicon carbide (a-SiC) thin films, deposited by pulsed laser deposition (PLD) techniq...
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Article
Elucidation of size, structure, surface plasmon resonance, and photoluminescence of Ag nanoparticles synthesized by pulsed laser ablation in distilled water and its viability as SERS substrate
In the present work, silver nanoparticles have been synthesized as a function of laser irradiation time and incident laser fluence by focusing a second harmonic of a Q-switched Nd:YAG laser. Increase in the ir...
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Article
Effect of oxygen partial pressure on nonlinear optical and electrical properties of BNT–KNNG composite thin films
Composite thin films of 1–x [Bi0.5Na0.5TiO3] – x [K0.5Na0.5NbO3 + 1 wt% Gd2O3] (BNT–KNNG); (x = 0.01) have been deposited at various O2 pressures from 0.1 to 10 Pa by pulsed laser deposition, and their crystal st...
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Article
Hybrid Formulation of Cu Nanoparticles and Labdane Diterpene from Alpinia Nigra: a Vibrational Spectroscopic Study
The vibrational characteristics of a labdane diterpene, (E)-labda-8(17),12-diene-15,16-dial, have been studied using FT-IR, FT-Raman and surface-enhanced Raman spectroscopy (SERS). A good yield of the compound...
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Article
Surface plasmon resonance and nonlinear optical behavior of pulsed laser-deposited semitransparent nanostructured copper thin films
In this paper, surface plasmon resonance (SPR) and nonlinear optical properties of semitransparent nanostructured copper thin films fabricated on the glass substrate at 400 °C by pulsed laser deposition techni...
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Article
Experimental investigation of underwater laser beam micromachining (UW-LBμM) on 304 stainless steel
Fabrication of miniaturized components provides a challenge to the manufacturing industries and to meet the challenges many unconventional machining methods are developed, among which laser beam micromachining...
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Chapter
Laser Induced Micromachining and Preliminary Experiments on Manufacturing of Micro-channel on Mild Steel
Laser-Induced Micromachining (LIMM) is a non-conventional machining process in which a high power laser beam is focused over the work surface in order to remove the material selectively. The material is remove...
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Article
Antimicrobial and micro Raman spectroscopy of selected Zingiberaceae species from Northeast India
Antimicrobial activity of crude rhizome oils from some important members of Zingiberaceae from Northeast India was carried out in the present study. The plants used were Curcuma amada, C. longa, Zingiber moran, a...
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Article
Open AccessEffect of target–substrate distance onto the nanostructured rhodium thin films via PLD technique
Rhodium thin films on highly polished stainless steel substrates were fabricated via pulsed laser deposition (PLD) technique. The PLD films of rhodium were observed to be preferentially oriented in Rh(111) pla...
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Article
Determination of the crystallographic orientations of a Ce:BaTiO3 crystal via backward two-wave mixing
The crystallographic axes of photorefractive Ce:BaTiO3 crystal is determined via backward two-wave mixing. The effect of input beam polarization is studied onto the transmitted and reflected wave through the crys...
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Article
Influence of thermal oxidation on surface and thermo-mechanical properties of polyethylene
Blown low density polyethylene (LDPE) films added with oxo-biodegradable additive containing pro-oxidant were subjected to thermo-oxidation in an oven at 70 °C for varying time periods. The changes in mechanic...
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Article
Effect of Mg do** and substrate temperature on the properties of pulsed laser deposited epitaxial Zn1−x Mg x O thin films
In this paper, we report on the pulsed laser deposition of epitaxial (0002) oriented Zn1−x Mg x O thin films onto (0001) sapphire substrate in O2 ambient ...
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Article
A simple laboratory experiment for studying the relaxation oscillations in a diode laser
We have demonstrated the modulation of laser around threshold for the observation of relaxation oscillations in a semiconductor diode laser. The oscillations frequency for the diode laser D1 was 1.5 kHz whereas t...
