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【Hitachi High-Tech Launches the SU3900SE and SU3800SE Series High-Resolution Schottky Field Emission Scanning Electron Microscopes Allowing Observation of Large and Heavy Samples at the Nano Level】 Hitachi High-Tech Corporation announced today the launch of the SU3900SE and SU3800SE High-Resolution Schottky Scanning Electron Microscopes, which provide highly accurate and efficient observation of large and heavy specimens at the nano level. The SU3900SE specimen stage has been redesigned to enable operators to observe heavy specimens up to 5 kg. The specimen stage is the largest in Hitachi High-Tech's scanning electron microscope (SEM) offerings, making it suitable for large specimens up to 300 mm in diameter and 130 mm in height, which is around 1.5 times larger when compared to its SU5000 predecessor. https://lnkd.in/gxBc7DvV

Unique ultrafast laser Unique properties of ultrafast lasers The ultra-short pulse duration of ultrafast lasers gives these systems unique properties that distinguish them from long-pulse or continuous-wave (CW) lasers. In order to generate such a short pulse, a wide spectrum bandwidth is required. The pulse shape and central wavelength determine the minimum bandwidth required to generate pulses of a particular duration. Typically, this relationship is described in terms of the time-bandwidth product (TBP), which is derived from the uncertainty principle. The TBP of the Gaussian pulse is given by the following formula :TBPGaussian=ΔτΔν≈0.441 Δτ is the pulse duration and Δv is the frequency bandwidth. In essence, the equation shows that there is an inverse relationship between spectrum bandwidth and pulse duration, meaning that as the duration of the pulse decreases, the bandwidth required to generate that pulse increases. Figure 1 illustrates the minimum bandwidth required to support several different pulse durations. The technical challenges of ultrafast lasers The wide spectral bandwidth, peak power, and short pulse duration of ultrafast lasers must be properly managed in your system. Often, one of the simplest solutions to these challenges is the broad spectrum output of lasers. If you have primarily used longer pulse or continuous-wave lasers in the past, your existing stock of optical components may not be able to reflect or transmit the full bandwidth of ultrafast pulses. #Optical #photonics #semiconductor #Optics #opticalcenter #SiliconPhotonics #photodetectors #optomechanics #laser #Quantum Read more: https://lnkd.in/eUPTDEsT

NEW PUBLICATION Are you interested in shock/blast waves produced in solid targets by irradiation with lasers? Read our paper. The mechanism of production relies on energy deposition from the hot electrons produced by laser–matter interaction, producing a steep temperature gradient inside the target. Hot electrons also produce preheating of the material ahead of the blast wave and expansion of the target rear side, which results in a complex blast wave propagation dynamic. Several diagnostics have been used to characterize the hot electron source, the induced preheating and the velocity of the blast wave. Results are compared to numerical simulations. These show how blast wave pressure is initially very large (more than 100 Mbar), but it decreases very rapidly during propagation. Here you will find more details: https://lnkd.in/dcuV4XUm

The Scanning NV Microscope is a quantum precision measurement instrument that combines optically detected magnetic resonance (ODMR) of diamond nitrogen-vacancy centers with scanning probe technique. It can be applied to the research of spintronics, multiferroic, 2D magnetic material, superconductor and soon. This is the result of inspection of a magnetic sample using the CIQTEK Scanning NV Microscope. Check more: https://lnkd.in/g3bbPm3a #CIQTEK #NVcenter #magnetism

111 Hz & 14 Ultrasound probes 😱 49 * 2D velocity profiles every 9 ms This is how UVP-DUO helped a team at EPFL and Institute of Technology, Sligo to make a new breakthrough... In a groundbreaking study, "Understanding turbulent free-surface vortex flows using a Taylor-Couette flow analogy," our UVP-DUO was instrumental in capturing the intricate dynamics of free-surface vortices (FSV). This innovative research, conducted by Mulligan et al., explored the fascinating similarities between FSV and the well-known Taylor-Couette flow (TCF), shedding new light on the behavior of these complex fluid systems. How did UVP-DUO make this possible? 🚀 The UVP-DUO, with its exceptional temporal resolution of 9ms (111Hz), was pivotal in capturing the rapid, transient structures within the FSV. Here's how it worked: - Configuration: A 7 × 7 array of ultrasound transducers was strategically positioned along the radial and axial directions of the vortex core. - Precision: This setup allowed for precise two-dimensional velocity measurements, providing detailed velocity vectors and vorticity contours. - High Resolution: The ability to record at 111Hz enabled the detection of fine-scale, transient vortex structures, similar to those observed in TCF. Key Findings from the Study 🔍 1. Time-Dependent Vortices: The UVP-DUO revealed distinct, time-dependent vortices in the FSV, analogous to Taylor vortices in TCF. 2. Energy Transfer: Unlike TCF, where mechanical energy comes from rotating cylinders, the FSV's energy comes from shear-driven circulation, inducing similar instabilities. 3. Vortex Stability: The study proposed a 'virtual cylinder' concept for visualizing the FSV, providing insights into its various stability modes. The Future of Fluid Dynamics 🌐 Thanks to the high-resolution capabilities of UVP-DUO, researchers are making significant strides in understanding turbulent flows. This knowledge is crucial for developing innovative solutions in environmental fluid dynamics, industrial mixing processes, and beyond. More info here: https://lnkd.in/dmQZXkAq #FluidDynamics #UVPDUO #Innovation #Research #Science #Engineering #TurbulentFlows #TaylorCouette #MetFlow

Say goodbye to bulky laser safety gear! Our new research paves the way for self-activating optical limiters. #Innovation #MetaOptics #TMOS ABSTRACT: Protection of human eyes or sensitive detectors from high-intensity laser radiation is an important challenge in modern light technologies. Metasurfaces have proved to be valuable tools for such light control, but the actual possibility of merging multiple materials in the nanofabrication process hinders their application. Here we propose and numerically investigate the opto-thermal properties of plane multilayered structures with phase-change materials for optical limiters. Our structure relies on thin-film VO2 phase change material on top of a gold film and a sapphire substrate. We show how such a multi-layer structure can act as a self-activating device that exploits light-to-heat conversion to induce a phase change in the VO2 layer. We implement a numerical model to describe the temporal evolution of the temperature and transmittivity across the device under both a continuous wave and pulsed illumination. Our results open new opportunities for multi-layer self-activating optical limiters and may be extended to devices based on other phase change materials or different spectral regions..

GE Aerospace adopts cutting-edge inspection device used to expose art forgeries The US firm GE Aerospace will adopt a new cutting-edge X-ray inspection device to improve the way the company analyses metal parts, after entering an agreement with Bruker, a leading provider of analytical tools for material characterization. Bruker has developed a non-destructive open beam X-ray fluorescence spectroscopy (XRF) inspection device that is capable of detecting microstructural variations in metal parts.  The new technology will allow GE Aerospace to improve the quality and detail of part inspections and help reduce the airline’s costs by more accurately pinpointing repaired parts that can be reused and those that need to be replaced.  Read more at: https://lnkd.in/dVgH7_Zm #AviationTalk #aviationnews #avgeek #aviation

Unlock the next level of multimodal characterization with the SignatureSPM from HORIBA! 🔬✨ As the first system built on an automated AFM platform integrating a Raman/photoluminescence spectrometer, SignatureSPM enables true colocalized measurements of physical and chemical properties in a single analysis. With SignatureSPM, you can: • Obtain comprehensive sample insights by combining topographic, mechanical, electrical, magnetic, optical, and chemical data. • Save time with reduced sample handling and real-time colocalized data collection. ⏱️ • Achieve confident results through the seamless correlation of different sample properties. 💡 • Enhance your AFM capabilities with advanced chemical characterization. 🔎 All AFM modes are included in the basic package: • Kelvin Probe Microscopy • Piezo Response Force Microscopy • Magnetic Force Microscopy • Nanolithography • Force-curve Measurements Contact us for more information! Info@fandascientificme.com Tel: +971 4 837 8381 #AFM #Spectroscopy #Raman #MaterialScience #HORIBA #Innovation #SignatureSPM HORIBA HORIBA France HORIBA Scientific

Principles and types of laser What is laser? LASER(Light Amplification by Stimulated Emission of Radiation) ; To get a better idea, take a look at the image below: An atom at a higher energy level spontaneously transitions to a lower energy level and emits a photon, a process called spontaneous radiation. Popularly can be understood as: a ball on the ground is its most suitable position, when the ball is pushed into the air by external force (called pumping), the moment the external force disappears, the ball falls from a high altitude, and releases a certain amount of energy. If the ball is a specific atom, then that atom emits a photon of a specific wavelength during the transition. Classification of lasers People have mastered the principle of laser generation, began to develop different forms of laser, if according to the laser working material to classify, can be divided into gas laser, solid laser, semiconductor laser, etc.. 1. Gas laser classification: atom, molecule, ion; The working substance of gas laser is gas or metal vapor, which is characterized by a wide wavelength range of laser output. The most common is a CO2 laser, in which CO2 is used as a working substance to generate an infrared laser of 10.6um by excitation of electrical discharge. Because the working substance of the gas laser is gas, the overall structure of the laser is too large, and the output wavelength of the gas laser is too long, the material processing performance is not good. Therefore, gas lasers were soon eliminated from the market, and were only used in certain specific areas, such as laser marking of certain plastic parts. 2. Solid laser classification: ruby, Nd:YAG, etc.; The working material of the solid state laser is ruby, neodymium glass, Yttrium aluminum garnet (YAG), etc., which is a small amount of ions uniformly incorporated in the crystal or glass of the material as the matrix, called active ions... #Optical #photonics #semiconductor #Optics #opticalcenter #SiliconPhotonics #photodetectors #optomechanics #laser

I just stumbled, quite serendipitously, upon the report—Laser Design Basis for the National Ignition Facility—and have linked it below. It was released 30 years ago this week. It is the roadmap for the design of the NIF laser system and provides key performance requirements, the optical configuration, and technical challenges as they were assessed at that time. It is incredibly prescient for what has occurred since. The report was written by members of the foundational team—John Hunt, Ken Manes, John Murray, Paul Renard, Rick Sawicki, John Trenholme, and Wade Williams—who were involved in the designs of many of the ICF lasers that have been built since the LLNL Laser Division was born in 1972. During that time, LLNL's ICF lasers, among many other innovations, have increased in infrared energy nearly 100,000 times and were transformed into the highest energy UV lasers in the world. John, John, John, Ken, Paul, Rick, and Wade were key laser scientists, modelers, and optical designers, and Rick was NIF's chief engineer. This group's pioneering work, and that of so many others, led to the energy gain demonstrations that were promised and highlighted in the middle initial of NIF's name. This report is only four pages long, but its impact is immense. I found it inspiring and well worth a read. It encouraged me, once again, on our path to commercializing laser fusion energy. More on that later. https://lnkd.in/gz5abJ4t #fusion, #fusionenergy