Eureka的动态

Thanksgiving may be a time for recipes, but our recipe for precision involves lasers, sparks, high-powered fiber optics, and a dash of innovation! Bring on the engineering feasts! ????? #ThanksgivingPrep #PrecisionFabrication #Engineering #MetalFabrication

?? Welcome to the World of Mechanical Metamaterials! ?? Ever wondered how geometry can transform materials into something extraordinary? ?? From lightweight lattices to auxetic designs, mechanical metamaterials are reshaping engineering, science, and technology. In this series, we’ll uncover: ?? What mechanical metamaterials are ?? How they work ?? Their groundbreaking applications in industries like aerospace, healthcare, and beyond Join us on this exciting journey to explore the future of materials! Don’t forget to like, subscribe, and hit the notification bell ?? to stay updated with our upcoming videos! https://lnkd.in/gDV5JW7x #MechanicalMetamaterials #metamaterials #Engineering #Innovation #AdvancedMaterials #FutureOfDesign #3dprinting

Exciting innovation alert! ?? Researchers at Caltech, under the guidance of Professor Chiara Daraio, have introduced a groundbreaking material known as PAM (polycatenated architected materials). This material showcases a dual nature, acting as both a solid and a liquid, adapting its behavior based on the applied stress. The implications of this discovery are vast, with potential applications spanning from advanced protective equipment such as helmets to cutting-edge biomedical devices and even futuristic robotics. ?? Learn more about this revolutionary material here: [Link to the article](https://lnkd.in/dPPHRWAX) #Innovation #MaterialScience #CaltechResearch

Dust-free enclosed optical machine The term “dust-free enclosed optical machine” generally refers to an optical equipment system that operates in an enclosed environment, especially where a high degree of cleanliness and precision optical operations are required. Such systems are often used in research, production and experimental applications where the optics are required to be kept free of dust and contamination to ensure precise operation and measurement. The following are some of the key features: Dust-free design: In order to prevent dust or other tiny particles from interfering with or affecting the optical system, the equipment is hermetically sealed. This design prevents dust from the external environment from entering the system and keeps the optics clean. Hermetically sealed construction: The system is completely enclosed to avoid contamination from outside air circulation. The air inside the optical system is made to a high standard of cleanliness by means of special materials or structures that meet specific environmental criteria. Optical system: Optical components contained within the system, such as lenses, lasers, optical fibers, etc., must be kept clean because any stains, dust, oil, etc., will affect their performance, leading to measurement errors or affecting optical performance. Application Scenario: This type of optical machine is widely used in semiconductor manufacturing, precision laser processing, scientific research experiments and other places that require an extremely clean environment. In these settings, any minor contamination may adversely affect the production process or research results. #projector #beamer #technology #factory #design #tech #hometheatre

Did you know ceramics play a crucial role in modern tech? From semiconductor components to aerospace applications, their unique properties make them indispensable. Share your experiences or questions about engineering ceramics! #EngineeringCeramics #CeramicMaterials #InnovativeTech

New technology “Insulation Coatings”- proven or not proven The term “insulation coatings” is all over the market from major paint manufacturers of every kind. Why? Over the past 35 years SPI COATINGS in Kansas worked directly with NASA researching ceramic compounds finding the actual proven ceramics “that would work” in a coating/paint solution formula. All during that time to around 2020, the idea of insulation coatings was just too much to swallow to be accepted. But, during all this time, SPI COATINGS had been testing, proving and doing real world projects to establish our technology. Suddenly, the majors saw and realized that this technology and very real. They were about to be left behind so out they came with statements about how good their future insulation coating could be. Not that they had such coating that had proven itself with actual in-field projects or tested by the US FEDERAL DOE. SPI COATINGS by this time had the Federal DOE using their WEATHERIZATION ASSISTSNCE Program do validation testing on SUPER THERM (thin film) reflecting all three heat waves from the sun keeping the metal surface coated down to one degree over ambient versus 40 degrees over ambient for one of the best reflective paints on the market. Then take our HPC coating ( thick film) applied over hot surfaces from 400F/204C up to 1200F/650C sprayed while operating and no shut down. Georgia Pacific did a full year long test on a digester processing tank by removing the fiber wrap and jacketing then spraying on HPC. The result: a 49% savings on energy or $333,000 that year. This is based directly against the standard wrap and jacket system. This means the standard system set the standard of the savings base. HPC outperformed the standard system by 49%. Engineers asked how to compare HPC against the standard insulation system, HPC beat it by 49% in a real-world in- plant operation. Not doing some ASTM inside lab test and stating this is what to expect in a real-world setting. To accept such theorical results is crazy. Real-world results in a real plant setting performed by their own engineering staff is valid and factual. SPI COATINGS “insulation coatings” are NASA based, proven by DOE and Georgia Pacific engineering and verified by the EPA ENERGY STAR committee. You can and will listen to advertising on suggested results, proposed results and all the in-house calculations they can throw at the possibilities, but nothing proven in real testing and operating results. Only SPI COATINGS has the real results, the real research spanning 35 years ( not 48 months), proven by DOE and projects worldwide. We have it, they are working on it.

This is a fascinating article about the development of new materials that can twist light. These materials have the potential to be used in a variety of extreme settings, such as hot airplane engines. The fact that the material is made by layering tiny particles on a grooved plastic sheet is particularly interesting. This approach seems relatively simple and could potentially be scaled up for manufacturing. The use of MXenes, a ceramic-like material known for its heat tolerance, is also a clever choice. This material could allow the new light-twisting material to be used in environments that would be too hot for other materials. Overall, this research has the potential to lead to the development of new and innovative technologies. I am excited to see how these materials are used in the future. #omiomardreamer #omiomardreamerllc #science #engineering https://lnkd.in/ggDJMk8U

To save on fuel and reduce aircraft emissions, engineers are looking to build lighter, stronger airplanes out of advanced composites. These engineered materials are made from high-performance fibers that are embedded in polymer sheets. The sheets can be stacked and pressed into one multilayered material and made into extremely lightweight and durable structures. But composite materials have one main vulnerability: the space between layers, which is typically filled with polymer “glue” to bond the layers together. In the event of an impact or strike, cracks can easily spread between layers and weaken the material, even though there may be no visible damage to the layers themselves. Over ...

?? ???????? ???????? ???????? ?????????????????? ?????????????????? ???????????????? (??????): ???????????? ?????? ?????????????????????? ????????????????????s ?? In the dynamic field of electromagnetic engineering, Frequency Selective Surfaces (FSS) play a pivotal role by selectively manipulating electromagnetic waves. These advanced materials are crucial in applications ranging from telecommunications to radar systems. ?????????????????? ???????????????????? FSSs are essentially a two-dimensional periodic array of conductive elements or apertures, which interact with incident electromagnetic waves. The design of these surfaces involves careful consideration of several parameters including: ?????????????? ?????????? ?????? ????????: Different shapes (e.g., patches, slots, crosses) and sizes affect the resonant frequency and bandwidth. ???????????????? ??????????????: The distance between elements influences the interaction and coupling effects. ?????????????????? ????????????????????: The dielectric constant and thickness of the substrate impact the overall performance. ???????????????? ?????????? ?????? ????????????????????????:?The angle and polarization of the incident wave can significantly alter the FSS response. ?????????????????????? ?????????????????????? ?????????????????? ????????????: Each element of the FSS behaves like an LC circuit, where the inductance and capacitance are determined by the element's geometry and the substrate’s properties. The resonant frequency is where the inductive and capacitive reactance cancel each other out, resulting in a peak transmission or reflection. ???????????????????????? ???????? ????????????: FSS can be modeled as a network of transmission lines, where each element represents a series or parallel impedance. This approach helps in understanding and predicting the surface's behavior in terms of reflection and transmission coefficients across a range of frequencies. ??????????????'?? ??????????????: For analyzing periodic structures, Floquet’s theorem simplifies the problem by allowing the study of a single unit cell with periodic boundary conditions. This reduces computational complexity and provides insight into the dispersion characteristics of the FSS. ?????????? ????????????????: By decomposing the electromagnetic fields into their modal components, designers can better understand how different modes propagate and interact within the FSS structure. This is particularly useful for complex geometries and multi-layered designs. ?? ???????????????????? ?????? ???????????? ???? ?????????????????????????????? ???????????? ?? The future of FSS looks promising, especially with advancements in materials science such as metamaterials and nanotechnology. These innovations could lead to even more compact, efficient, and versatile FSS designs, opening up new possibilities in various high-tech fields. #FrequencySelectiveSurface #RFDesign #Metamaterials #SmartTechnology #RadarSystems #CEM #FEKO

The joint analysis staff, led by Dr. Chanwoo Yang and Researcher Seong Ju Park from Korea Institute of Industrial Know-how(KITECH), together with Prof. Jin Kon Kim and Dr. Keon-Woo Kim from POSTECH, has efficiently developed a compact power storage system with glorious elasticity. This analysis was revealed within the world-renowned journal within the discipline of digital engineering, ‘npj Versatile Electronics’. The joint analysis staff, led by Dr. Chanwoo Yang and Researcher Seong Ju Park from Korea Institute of Industrial Know-how(KITECH), together with Prof. Jin Kon Kim and Dr. Keon-Woo Kim from POSTECH, has efficiently developed a compact power storage system with glorious elasticity. This analysis was revealed within the world-renowned journal within the discipline of digital engineering, ‘npj Versatile Electronics’. Past foldable and rollable units, the period of stretchable IT units is arriving. For these units, the event of small, elastic power storage units is important. On this respect, micro supercapacitors (MSCs) are gaining consideration as very small volumes that may energy such digital units. Nonetheless, the stable metals generally used as present collectors, equivalent to gold (Au), have inherently restricted stretchability, considerably limiting their potential for deformation. On this examine, the staff chosen gallium-indium liquid metallic (EGaIn) because the MSC present collector. EGaIn has very excessive conductivity and, as a result of its liquid nature, is well deformable. Nonetheless, shaping it has posed vital technical challenges. To beat this, the staff devised a technique of patterning EGaIn utilizing a laser. They efficiently used the extreme power of the laser to sample EGaIn merely and exactly, making use of it successfully because the MSC’s present collector. Based mostly on this expertise, the analysis staff was capable of create an MSC that may very well be stretched and shrunk over 1,000 occasions with none lack of power storage efficiency. Moreover, this system demonstrated secure power provide functionality even when twisted, folded, or crumpled. Dr. Yang acknowledged, “Laser expertise permits for exact work whereas additionally dashing up the method,” and expressed his hope that “this analysis will probably be helpful in varied industrial fields and contribute to the event and commercialization of elastic power storage units.” ### This analysis was supported by the Growth of Root Course of Know-how for Manufacturing Flexibility at KITECT and the Inventive Analysis Undertaking of the Ministry of Science and ICT and revealed within the articles of npj Versatile Electronics (IF: 14.6 & JCR: 2.0%), Mar 2024. KITECH, based in 1989 as an affiliate of the Ministry of Commerce and Business, has emerged as a premier complete utilized analysis institute in Korea. KITECH is addressing the digital transformation challenges confronting native industries, each internally and externally, by main