Laser spectroscopy

Part 2 of ebook "CONCREEP 10: Mechanics and physics of creep, shrinkage, and durability of concrete and concrete structures" provides readers with contents including: steel corrosion in reinforced concrete mechanisms, assessment, measures, and forecast models; cracking behaviors caused by the corrosion of reinforcing bars in rc columns; evaluating the performance of recycled aggregate concrete; nanotechnology applied to concrete; towards the next generation of standards for the service life of cement-based materials and structures mini-symposium of COST action TU1404; microstructure and mic...

831p mothoiphong 28-06-2024 1 1   Download

. In this research, we present the DOAS system using the Ce:LiCAF laser for determining SO2 gas concentration in the atmosphere. The Ce:LiCAF laser has a full width at half maximum of 2 nm with a wavelength range from 286 to 291 nm and a peak wavelength of 288.5 nm. The results show that the DOAS system accurately determines the gas concentration with a measurement error of 6%. This result can serve as the basis for developing practical DOAS systems with the ability to monitor a wide range of gasses and survey many other types of pollutants.

8p dianmotminh02 03-05-2024 2 1   Download

Ebook "Ultrashort laser pulses in biology and medicine" gives an overview of biological and medical applications of these laser pulses. The briefness of these laser pulses permits the tracing of the fastest processes in photo-active bio-systems, which is one focus of the book. The other focus is applications that rely on the high peak intensity of ultrashort laser pulses. Examples covered span non-linear imaging techniques, optical tomography, and laser surgery.

326p ladongphongthanh1008 22-04-2024 3 2   Download

This paper was performed to evaluate the photothermal effect of pure gold nanoparticles (Au NPs) prepared by electrochemical method at different voltages, under laser irradiation in the safe wavelength range. The formation, morphological, and structural properties of Au NPs were analyzed by UV-Vis absorption spectroscopy, transmission electron microscopy (TEM), and X-ray diffraction (XRD).

11p vijaychest 24-04-2024 3 2   Download

Ebook "Modelling the dissociation dynamics and threshold photoelectron spectra of small halogenated molecules" outlines two related experimental techniques, threshold photoelectron spectroscopy and threshold photoelectron photoion coincidence techniques, which are utilised to investigate small halogenated molecules. All the experiments were conducted at the vacuum ultraviolet beamline of the Swiss Light Source, a synchrotron photon source, which has the advantage over popular laser photon-sources of extreme ease of tunability.

184p tudohanhtau1006 29-03-2024 2 1   Download

Ebook "Laser photodissociation and spectroscopy of mass-separated biomolecular ions (Lecture notes in Chemistry, Volume 83)" is to introduce students and researchers to exciting developments in laser-based photodissociation of trapped biomolecular ions inside mass spectrometers. The convergence of mass spectrometry (MS) and lasers in fact draws from a rich history in mass spectroscopy in the realm of physical chemistry and chemical physics.

128p coduathanh1122 27-03-2024 3 1   Download

Ebook "New frontiers in photochromism" focused not only on the above-mentioned classical subjects in photochromism, such as color changes, optical memory, and optical switches, but also on fundamental physicochemical studies and unprecedented application fields that have not yet been explored in photochromism. The latter topics include light-driven mechanical motion, photocontrol of surface wettability, metal deposition on solid materials, photocontrol of chiral properties, ultrafast decoloration dyes, and femtosecond laser experiments, among others.

297p coduathanh1122 27-03-2024 3 1   Download

Part 2 book "Quantum theory of the optical and electronic properties of semiconductors" includes content: Semiconductor bloch equations, excitonic optical stark effect, wave mixing spectroscopy, optical properties of a quasi equilibrium electron hole plasma, optical bistability, semiconductor laser,... and other contents.

243p muasambanhan07 18-02-2024 3 1   Download

Ebook Biophysics: Part 1 includes contents: Laser correlation spectroscopy - nutritional, ecological and toxic aspects; microtools for microsurgery of a single cell in field of cellular engineering, an interfacial thermodynamics model for protein stability,... and other contents.

144p longtimenosee03 30-01-2024 5 2   Download

Ebook "Laser-generated functional nanoparticle bioconjugates: Design for application in biomedical science and reproductive biology" discusses the structure-function relationship of nanoparticle conjugates derived from a laser-based fabrication method. Both the limits and perspectives of tunable conjugate functions are presented, providing a general outline for researchers to configure functionalized nanoparticles with a specifically optimized design for biomedical requests, e.g. in biomedical engineering regenerative science and reproductive biology.

317p lamquandat 28-12-2023 2 2   Download

Conventional rigid optical-electronic systems need to be improved to adapt to the current food quality monitoring. This paper aims to propose and develop a flexible wearable optical wireless sensing system (FWOS) by laser ablation of polyethylene terephthalate/polyimide/copper (PET/PI/Cu) film.

8p viberbers 09-08-2023 4 3   Download

In this paper, the computational scheme and calculation results of scattering functions for metastable states of a diatomic beryllium molecule in laser spectroscopy are presented. The solution to the problem is performed using the authors' software package with the high-accuracy finite element method.

14p viericschmid 07-01-2022 16 0   Download

A series of polyoxometalate-based magnetic nanoparticles were developed as novel carriers for anticancer drugs. Characterization of the nanoparticles was done by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), wavelength dispersive X-ray (WDX), and laser particle size analyzer. Epirubicin (EPI) was selected as a model drug. EPI loading efficiency, EPI loading content, and EPI release profiles were studied. Drug loading was controlled using acid-base titration since H + was released during the loading process.

9p langthannam 29-12-2021 11 0   Download

After their production and selection in the spectrometer, the ions of interest will be stopped in a buffer gas, neutralised, resonantly re-ionised, cooled and bunched. This will bring us in an adequate position to perform laser spectroscopy, mass measurements and decay spectroscopy of their ground and isomeric states. In this paper report on the ongoing commissioning of the detector set-up.

6p trinhthamhodang1218 14-03-2021 13 1   Download

In this study, we present the technique of tunable diode laser spectroscopy and the spectroscopic parameters of 13 lines of H2O in the 11980 -12260 cm−1 spectral region. Spectra were recorded at room temperature for a wide range of pressures (2 - 15 Torr for pure H2O and 50 - 760 Torr for H2O in air).

8p tamynhan5 10-12-2020 24 2   Download

We characterized their shape and morphology using transmission electron microscopy (TEM), and confirmed their crystalline structure with X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) in combination with energy-dispersive X-ray spectroscopy (EDX) elemental mapping.

9p tamynhan4 06-09-2020 11 1   Download

Inorganic or inorganic-organic hybrid nanomaterials have great potential for applications in the biomedical fields. Biological half-life is an essential pharmacokinetic parameter for these materials to function in vivo. Compared to inductively coupled plasma mass spectrometry (ICP-MS), which is the gold standard, laser-induced breakdown spectroscopy (LIBS) is a faster and more efficient elemental detection method. We investigated an efficient way to quantify the metabolic rate using LIBS.

9p covid19 14-06-2020 15 2   Download

Two-colour three-pulse nonlinear spectroscopy can be used to study the dynamics of excited carriers in Si quantum dot structures embedded in SiN. Decays of the transverse optical phonon population and the transverse acoustic phonon population are measured and discussed. A theoretical simulation is also performed to support interpretation of our experimental observations.

6p 12120609 23-03-2020 16 2   Download

Gelatine has been widely used in many multidisciplinary research fields due to its biocompatibility. Using saline solutions in the gelation of gelatine allows for new properties to be incorporated into the prepared gels. This study examined the optical and colour properties of gelatine gels prepared in saline solutions, containing three different metal chlorides (NiCl26H2O, CoCl26H2O, and CrCl36H2O) with concentrations of up to 50%, to prepare three groups of gels.

11p trinhthamhodang1 14-11-2019 8 1   Download

Natural fish bones, that are known to have unique adsorption capacity, have been used in the present work for removal of heavy metals, copper, and cobalt, from wastewater. It has been found that sorption process depends on the initial metal concentration and on the contact time. Laser-induced breakdown spectroscopy (LIBS) as a spectrochemical analytical technique was used for qualitative and quantitative analysis of the water samples. X-ray Fluorescence (XRF), as another spectrochemical analytical method, was exploited to characterize the remediation of wastewater.

9p trinhthamhodang1 14-11-2019 16 0   Download