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3761
Ultrafast and continuous-wave spectroscopy of multiferroic oxide thin films
Published 2014“…</p> <p>Coherent magnons and acoustic phonons were impulsively excited and probed in thin films of the room temperature multiferroic Bi<sub>1-x-y</sub>Dy<sub>x</sub>La<sub>y</sub>FeO<sub>3</sub> using femtosecond laser pulses. The elastic moduli of rhombohedral, tetragonal and rare-earth doped BiFeO<sub>3</sub> were determined from acoustic mode frequencies in conjunction with spectroscopic ellipsometry. …”
Thesis -
3762
Micro-structured tungsten, a high heat flux pulse proof material
Published 2020-12-01“…A sequential load was applied combining steady state deuterium plasma (5.1 × 1025 D + m−2, 51 eV, 240 °C, 150 min) loading with laser pulses (up to 105 pulses of 0.5 GW/m2, 3.6 mm spot diameter, 20 J, 1 ms pulse duration, up to 25 Hz pulse frequency). …”
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Article -
3763
First operation of the JUNGFRAU detector in 16-memory cell mode at European XFEL
Published 2023-11-01“…This acquisition scheme is better suited for the time structure of the X-rays as well as the pump laser pulses at the EuXFEL. To ensure confidence in the use of the burst mode at EuXFEL, a wide range of measurements have been performed to characterize the detector, especially to validate the detector alibration procedures. …”
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3764
Comparison of Therapeutic Effects between Pulsed and Continuous Wave 810-nm Wavelength Laser Irradiation for Traumatic Brain Injury in Mice
Published 2012“…Results The 810-nm laser pulsed at 10-Hz was the most effective judged by improvement in NSS and body weight although the other laser regimens were also effective. …”
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3765
Post-processing of antiresonant hollow-core fibers and its applications
Published 2023“…On the other hand, as a platform for the interaction between light and matter, the laser pulses can be guided over long distances within the hollow fiber core of micrometer magnitude, breaking the limitation of diffraction limit in free-space transmission and greatly enhancing the interaction between light and matter. …”
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Thesis-Doctor of Philosophy -
3766
Crystalline Flat Surface Recovered by High-Temperature Annealing after Laser Ablation
Published 2023-05-01“…Ultra-short laser pulses (1030 nm/230 fs) were used to laser ablate the surface of crystalline sapphire (Al<sub>2</sub>O<sub>3</sub>) at high intensity per pulse 20–200 TW/cm<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>2</mn></msup></semantics></math></inline-formula>/pulse. …”
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Article -
3767
Prospects of photon counting lidar for savanna ecosystem structural studies
Published 2014-11-01“…We used data from the Multiple Altimeter Beam Experimental Lidar (MABEL), an airborne photon counting lidar sensor developed by NASA Goddard. MABEL fires laser pulses in the green (532 nm) and near infrared (1064 nm) bands at a nominal repetition rate of 10 kHz and records the travel time of individual photons that are reflected back to the sensor. …”
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3768
Flowing liquid lithium plasma-facing components – Physics, technology and system analysis of the LiMIT system
Published 2017-08-01“…Limitations in wetting and prevention of lithium creep (i.e. getting and keeping the lithium only where it should be) have been solved by laser-texturing the base material with extreme short laser pulses (pico – femto second) of high power (several 10s of W). …”
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Article -
3769
Nanoscale-Resistive Switching in Forming-Free Zinc Oxide Memristive Structures
Published 2022-01-01“…An increase in the number of laser pulses from 1000 to 5000 was shown to lead to an increase in the thickness of the nanocrystalline ZnO film from 7.2 ± 2.5 nm to 53.6 ± 18.3 nm. …”
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3770
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3771
Nanomedicine: Treatment of Chronic Disease Using Gold Nano Thermo Robot (GNTR) Empowered With Nanotechnology Approaches
Published 2024-01-01“…To generate hyperthermia, which has been irradiated by laser pulses to propose GNTR, a Coulomb explosion took place, and a huge amount of dispersed hyperthermia waves were produced. …”
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Article -
3772
Microparticles of High Entropy Alloys Made by Laser-Induced Forward Transfer
Published 2022-11-01“…The controlled deposition of CoCrFeNiMo<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mrow><mn>0.2</mn></mrow></msub></semantics></math></inline-formula> high-entropy alloy (HEA) microparticles was achieved by using laser-induced forward transfer (LIFT). Ultra-short laser pulses of 230 fs of 515 nm wavelength were tightly focused into ∼2.4 μm focal spots on the ∼50-nm thick plasma-sputtered films of CoCrFeNiMo<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mrow><mn>0.2</mn></mrow></msub></semantics></math></inline-formula>. …”
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Article -
3773
Statistical Modeling of Radiative Transfer and Transient Characteristics for Multilayer Biological Tissue
Published 2014-01-01“…These characteristics may appear when a biological tissue is subjected to short laser pulses. Discovering of such characteristics and their analysis allows us to formulate a criterion for the validity of stationary models of radiation transfer in multilayer biological tissue. …”
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Article -
3774
Gene expression changes of angiogenesis factors during basal skin cancer laser destruction
Published 2023-12-01“…An increased expression of the matrix metalloproteinase MMP9 and the tachykinin precursor TAC1 genes were revealed in skin biopsy samples of the superficial form of basal cell skin cancer during laser pulsed therapy. The expression of tumor necrosis factor TNF, epidermal growth factor receptor EGFR, fibroblast growth factor FGF2 genes increases to a lesser extent. …”
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3775
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3776
Ultrafast charge carrier and coherent phonon dynamics study of semiconductor nanostructures using femtosecond transient absorption spectroscopy
Published 2017“…To investigate coherent electronic motion in low-dimensional semiconductors, we employ transient absorption spectroscopy with few-cycle laser pulses. The broadband spectra overlap with the two lowest-lying excitonic states of colloidal CdSe quantum dots (QDs), thus preparing a superposition of 1S_e 1S_h and 1S_e 2S_h states. …”
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Thesis -
3777
A functional characterisation of retrorubral field dopaminergic neurons
Published 2021“…Anaesthetised in vivo electrophysiological validation experiments demonstrated that ArchT-transduced dopaminergic neurons reliably pause their firing in response to brief (250 ms), physiologically-relevant yellow laser pulses. In freely-moving mice, ‘positive control’ experiments in which VTA dopaminergic neurons were briefly (250 ms) paused did not induce place aversion in either a bias conditioned place preference test or real-time place preference test.…”
Thesis -
3778
Efeito do Hólmio YAG laser (Ho: YAG) sobre o tendão patelar de ratos após 12 e 24 semanas de seguimento The effects of Holmium YAG laser (Ho:YAG) on the patellar tendon of rats aft...
Published 2005-01-01“…The animals have been divided in two groups, according to the follow-up time (12 and 24 weeks) and pursuant to the for form of laser application (continuous or two-point). A Holmium laser (pulsed, solid state, 2.1 micron waves, 40 watts, OmniTip 30º tip) apparatus was used. …”
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Article -
3779
Gap-Free Tuning of Second and Third Harmonic Generation in Mechanochemically Synthesized Nanocrystalline LiNb<sub>1−<i>x</i></sub>Ta<sub><i>x</i></sub>O<sub>3</sub> (0 ≤ <i>x</i> ≤...
Published 2024-02-01“…For this purpose, harmonic generation is studied in nanosized crystallites of mechanochemically synthesized LNT using nonlinear diffuse reflectometry with wavelength-tunable fundamental femtosecond laser pulses from 1200 nm to 2000 nm. As a result, a gap-free harmonic emission is validated that accords with the theoretically expected energy relations, dependencies on intensity and wavelength, as well as spectral bandwidths for harmonic generation. …”
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Article -
3780
Investigation into surface texturing by magnetic field assisted laser-produced plasma
Published 2013“…We used low repetition rate (1 kHz) of femtosecond laser pulses with negligible thermal accumulation and succeeded in non-ablative direct writing of silicon surface. …”
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Thesis