Department of Physics University of Illinois Urbana-Champaign on LinkedIn: Congratulations to Dr. Jin Chen, who passed his thesis defense on April… (2024)

#Autonomous_Healing of #Fatigue_Cracks via #Cold_WeldingPaper : https://lnkd.in/drztg6Gs : 19/07/2023 : https://lnkd.in/dSTVHH32 : 20/07/2023 : "Absolutely Stunning” – Scientists Discover #Metals That Can #Heal_Themselves"Here, we report that fatigue cracks in pure metals can undergo intrinsic self-healing. We directly #Observe the #Early_Progression of #Nanoscale_Fatigue_Cracks, and as expected, the cracks advance, deflect and arrest at local microstructural barriers. However, unexpectedly, cracks were also observed to #Heal by a process that can be described as #Crack_Flank_Cold_Welding induced by a combination of #Local_Stress_State and #Grain_Boundary_Migration. The premise that fatigue cracks can #Autonomously_Heal in #Metals through local interaction with microstructural features challenges the most fundamental theories on how engineers design and evaluate #Fatigue_Life in #Structural_Materials. We discuss the implications for fatigue in a variety of service environments."

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🥳 #SpecialIssue 👉 13 papers published in the Special Issues："Extreme #Mechanics in #Multiscale #Analyses of Materials"📝 Edited by Dr. Bin Wang and Prof. Dr. Arash Soleiman-Fallah🔗 https://lnkd.in/gw4saMDX#micromechanics; #Multiscale

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We were saddened to hear of the passing of John Goodenough this week, aged 100. Credited as the brains behind the development of #LithiumIon #batteries, Dr Goodenough was the oldest Nobel laureate when he was awarded a Nobel Prize in chemistry at the age of 97.Goodenough contributed to laying the foundation for commercial rechargeable batteries. His work focussed on increasing cell stability and creating new materials which allowed higher voltages, so higher power. #Lithium technology is not just a critical tool in the struggle to reduce carbon emissions, but also enables reliable, long-lasting, rechargeable power in tough environmental conditions. Dr Goodenough’s legacy will continue to drive rapid developments in military, oceanographic, oil and gas, transport, industry and robotics.See more about the chemistry behind lithium-ion batteries: https://lnkd.in/e5pbiQr9#Battery #LithumBattery #JohnGoodenough

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👉#SpecialIssue#PaperWelcome to read the publication in the following Special Issues："Advances in #Metamaterials and #Metasurface"Edited by Prof. Dr. Cheng Huang and Prof. Dr. Ting Xu🔗https://lnkd.in/gZ3Gmrur📝"#Asymmetric #Cross #Metasurfaces with #Multiple #Resonances Governed by #Bound #States in the #Continuum"Authored by HongjieFan et al.🔗https://lnkd.in/ghydXz25all-dielectric metasurface;bound state in the continuum;optical switching;sensing

😊 We invite you to contribute a paper to the Special Issue on:"Simulation of Abrasive Processes for Crystalline Materials by Means of Molecular Dynamics and Multiscale Methods"📣This Special Issue plans to present an overview of the most recent advances in the field of simulations of abrasive processes at the nanoscale by means of molecular dynamics and multiscale methods.⭐️Guest editor: Dr. Nikolaos Karkalos and Prof. Dr. Umberto Prisco⏰Deadline for submission: 30 April 2024🔗For more information: https://lnkd.in/gQCNDtR8#abrasive_processes #simulation#molecular_dynamics

When the team is inspired by the quest for truth, the results are nice! G P Veldes and I Prokopiou, thank you for the harmonic cooperation!Our newpaper: M Birba, I Prokopiou and G P Veldes:"Evaluation of the effectiveness of energetic thermal electrons on the excitation of the ionospheric red 6300Å airglow", Phys. Scr. 98 095005 (2023) DOI 10.1088/1402-4896/acea47*****************************************************************************Abstract*****************************************************************************In this paper we use previously calculated ionosphere electron temperatures Tein order to estimate the 6300 Å (red) airglow intensity enhancements attributed to thermal electrons from the tail of a Maxwellian electron distribution of sufficiently increased electron temperature. Then, we compare our results with the relevant observed measurements and we comment on the quality of the comparison and the possible causes of the differences. We also calculate the airglow intensity characteristic rise and decay times and compare them to the experimental ones, and we investigate the origin of the electrons which excite the red airglow. In the end, we assess the departure of the ionosphere electron energy distribution from a purely Maxwellian one, and the role of the electron elastic and inelastic collisions with the other components of the ionospheric F-region.

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Learn more about Dr. Josh Caldwell and his group. The Caldwell group employs infrared spectroscopy to develop an improved understanding of how natural and artificial materials interact differently with light at the nano- to atomic scale and the role of crystal symmetry in driving these changes.Vanderbilt University Mechanical EngineeringVanderbilt University School of EngineeringInterdisciplinary Materials Science at Vanderbilt University#VINSEVandy #vinse

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👉#SpecialIssue#PaperWelcome to read the publication in the following Special Issues："Investigation on Optical Phenomena of Micro/Nano Materials/Structures"Edited byDr. Tianyue Zhang 🔗https://lnkd.in/dU3-XiJz📝"Inversion of the Complex Refractive Index of Au-Ag Alloy Nanospheres Based on the Contour Intersection Method"Authored by Long Cheng et al.🔗https://lnkd.in/dXpfJmMT#Mie #theory;contour intersection method;#Au-Ag alloy #nanospheres;complex refractive index

"In this illustration of the superconducting material Eu-1144, the blue and magenta wave shown above the crystal lattice represents how the energy level of the electron pairs (yellow spheres) spatially modulates as these electrons move through the crystal. Credit: Brookhaven National LaboratoryTunneling spectroscopy uncovers the clearest proof yet that this exotic superconducting state of matter exists without a magnetic field in an iron-based superconductor.Researchers discovered an alternate superconducting state, called a pair density wave (PDW), in a non-magnetic environment, challenging previous understandings of superconductivity. This breakthrough in an iron-based superconductor that also exhibits ferromagnetism opens up new potential for superconductivity research and could revolutionize the field."https://lnkd.in/e4CqzXQc

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A very interesting research “Can Human Intention Affect Electrical Plasma?”April 21, 2023IONS Science TeamDr. William and Jean Tiller did wonderful research, hopefully IONS and others can use these valuable research and informations..https://lnkd.in/ek786mWB #research #science

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