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3421
Mechanistic Study in Gold Nanoparticle Synthesis through Microchip Laser Ablation in Organic Solvents
Published 2024-01-01“…This study explores the productivity of Au NPs in different organic solvents, revealing the necessity of multiple laser pulses to generate Au NPs successfully. This phenomenon, known as the ‘incubation effect,’ is linked to the lower pulse energy in the experimental condition and the thermal conductivity of the solvents. …”
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3422
Standoff detection of bacterial spores by field deployable coherent Raman spectroscopy
Published 2023-02-01“…Among them, particularly promising is Coherent anti-Stokes Raman scattering (CARS) spectroscopy, using synchronized pump/Stokes laser pulses to set up a vibrational coherence of target molecules at a laser focus, which is read by further interaction with a probe pulse, resulting in the emission of a coherent beam detectable at a distance. …”
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3423
Characterization of Femtosecond Laser and Porcine Crystalline Lens Interactions by Optical Microscopy
Published 2022-12-01“…The use of ultrafast laser pulses for eye anterior segment surgery has seen a tremendous growth of interest as the technique has revolutionized the field, from the treatment of myopia, hyperopia, and presbyopia in the cornea to laser-assisted cataract surgery of the crystalline lens. …”
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3424
Laser-Inscribed Stress-Induced Birefringence of Sapphire
Published 2019-10-01“…Birefringence of <inline-formula> <math display="inline"> <semantics> <mrow> <mn>3</mn> <mo>×</mo> <msup> <mn>10</mn> <mrow> <mo>−</mo> <mn>3</mn> </mrow> </msup> </mrow> </semantics> </math> </inline-formula> is demonstrated inside cross-sectional regions of 100 <inline-formula> <math display="inline"> <semantics> <mi mathvariant="sans-serif">μ</mi> </semantics> </math> </inline-formula>m, inscribed by axially stretched Bessel-beam-like fs-laser pulses along the c-axis inside sapphire. A high birefringence and retardance of <inline-formula> <math display="inline"> <semantics> <mrow> <mi>λ</mi> <mo>/</mo> <mn>4</mn> </mrow> </semantics> </math> </inline-formula> at mid-visible spectral range (green) can be achieved using stretched beams with axial extension of 30−40 <inline-formula> <math display="inline"> <semantics> <mi mathvariant="sans-serif">μ</mi> </semantics> </math> </inline-formula>m. …”
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3425
Study of Optical and Structural Properties of Copper Metal Cu Nanoparticles
Published 2022-12-01“…Its purity is (99.9) immersed in distilled (deionized) water, where the metal target was first removed from copper placed in (5mL) of distilled water with a specific laser energy (260mJ) and for a number of fixed laser pulses (50, 100, 150) respectively. The size and optical properties of nanoparticles were characterized by transmission electron microscopy (TEM) and visible-UV spectrometry, respectively. eV) at the pulse (50) and (2.77eV) at the (100) and its value was (2.69eV) at the (150) pulse. …”
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3426
Variability in bacterial flagella re-growth patterns after breakage
Published 2017-04-01“…In contrast, no re-growth was observed on filaments that had been broken using ultrashort laser pulses, a technique allowing for very local damage to individual filaments. …”
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3427
Flexible Neural Probes with Optical Artifact-Suppressing Modification and Biofriendly Polypeptide Coating
Published 2022-01-01“…Here, five kinds of neural interface materials are deposited on flexible polyimide-based neural probes and illuminated with a series of blue laser pulses to study their electrochemical performance and photoelectric noises for single-unit recording. …”
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3428
Backward Flux Re-Deposition Patterns during Multi-Spot Laser Ablation of Stainless Steel with Picosecond and Femtosecond Pulses in Air
Published 2021-04-01“…This interesting phenomenon is observed with both 10 ps and 600 fs NIR laser pulses at 5 kHz repetition rate. Ablation spot geometries could be altered with the use of beam splitting optics or a phase-only Spatial Light modulator. …”
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3429
Enhanced Laser-Induced Breakdown Spectroscopy for Heavy Metal Detection in Agriculture: A Review
Published 2022-07-01“…The three main approaches to enhancing LIBS are sample pretreatment, adding laser pulses, and using auxiliary devices. An enhanced LIBS signal may improve the LOD of heavy metal elements in agriculture and the sensitivity and stability of the LIBS technique. …”
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3430
Reconstruction of façades in point clouds from multi aspect oblique ALS
Published 2013-10-01“…In a first step windows are detected by a search for measurements of laser pulses which pass the windows (voyeur effect) and reflect behind the façade (indoor points). …”
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3431
URSA-PQ: A Mobile and Flexible Pump-Probe Instrument for Gas Phase Samples at the FLASH Free Electron Laser
Published 2020-11-01“…‘ultrafast X-ray spectroscopy for probing photoenergy conversion in quantum systems’) instrument is equipped with a magnetic bottle electron spectrometer (MBES) and tools to characterize the spatial and temporal overlap of optical and X-ray laser pulses. Its adherence to the CAMP instrument dimensions allows for a wide range of sample sources as well as other spectrometers to be included in the setup. …”
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3432
Shortcuts to adiabatic holonomic quantum computation in decoherence-free subspace with transitionless quantum driving algorithm
Published 2016-01-01“…It can be efficiently realized by controlling appropriately the frequencies of the external laser pulses. Also, our scheme has good scalability with more qubits. …”
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3433
Photodisruption of the Inner Limiting Membrane: Exploring ICG Loaded Nanoparticles as Photosensitizers
Published 2022-08-01“…To overcome this barrier, we intend to perforate the ILM by use of a light-based approach which relies on the creation of vapor nanobubbles (VNBs) when irradiating photosensitizers with high intensity laser pulses. Upon collapse of these VNBs, mechanical effects can disrupt biological structures. …”
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3434
Temperature-Dependent Optical Properties of Bismuth Triborate Crystal in the Terahertz Range: Simulation of Terahertz Generation by Collinear Three-Wave Mixing in the Main Crystal...
Published 2023-06-01“…Considering an approach that uses nonlinear crystals with high radiation resistance, pumped by intense laser pulses near their damage threshold, we suggest the crystal of bismuth triborate (BiB<sub>3</sub>O<sub>6</sub>, BIBO). …”
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3435
In situ electrical and thermal monitoring of printed electronics by two-photon mapping
Published 2017-06-01“…In this study, we demonstrate that nonlinear optical microscopy is a promising technique to achieve this goal. Using ultrashort laser pulses we stimulate two-photon absorption in a roll coated polymer semiconductor and map the resulting two-photon induced photoluminescence and second harmonic response. …”
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3436
Soft monolithic infrared neural interface for simultaneous neurostimulation and electrophysiology
Published 2023-05-01“…The developed implant is capable of stimulating the brain activity in localized cortical domains by delivering laser pulses in the 2 μm spectral region while recording electrophysiological signals. …”
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3437
Spectroscopic Characterization of Copper-Chitosan Nanoantimicrobials Prepared by Laser Ablation Synthesis in Aqueous Solutions
Published 2016-12-01“…Copper-chitosan (Cu-CS) nanoantimicrobials are a novel class of bioactive agents, providing enhanced and synergistic efficiency in the prevention of biocontamination in several application fields, from food packaging to biomedical. Femtosecond laser pulses were here exploited to disrupt a Cu solid target immersed into aqueous acidic solutions containing different CS concentrations. …”
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3438
Digital Integration of LiDAR System Implemented in a Low-Cost FPGA
Published 2022-06-01“…A laser transceiver with a symmetrical transmitting and receiving lens emits and collects laser pulses to range distance using the time-of-flight (ToF) method. …”
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3439
Electronic/optoelectronic memory device enabled by tellurium-based 2D van der Waals heterostructure for in-sensor reservoir computing at the optical communication band
Published 2024“…In this work, an electronic/optoelectronic memory device enabled by tellurium-based 2D van der Waals (vdW) heterostructure is reported, where the ferroelectric CuInP2 S6 and tellurium channel endow this device with both the long-term potentiation/depression by voltage pulses and short-term potentiation by 1550 nm laser pulses (a typical wavelength in the conventional fiber optical communication band). …”
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Journal Article -
3440
Possibility of CO2 laser-pumped multi-millijoule-level ultrafast pulse terahertz sources
Published 2024-01-01“…However, until now, the extremely high-energy THz pulses needed by the THz counterparts of the microwave accelerators were generated by optical rectification (OR) of ultrafast Ti:sapphire or Yb laser pulses. These lasers, however, are not very effective. …”
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