Stephen Holmes’ Post

I am pleased to announce that my latest research paper has been published in a highly esteemed Q1 journal. This work represents a significant contribution to "Multicolor MIR Photodetectors based on Colloidal QDs". You can read the full paper here: https://lnkd.in/dr7kswhf I would like to extend my gratitude to my co-authors, reviewers, and everyone who supported this research. #Optoelectronics #Nanostructures #Multicolor_Photodetectors #Photonics

Electronic Properties of MoSe2 Nanowrinkles 👨🔬 -- arxiv -- https://lnkd.in/gGPXp5Em Exciting new research from Stefan Velja, Jannis Krumland, and Caterina Cocchi reveals fascinating electronic properties of MoSe2 nanowrinkles! 😲 Their first-principles density functional theory study offers new insights into these unique 2D materials. Key findings: - 📏 MoSe2 nanowrinkles with nanometer sizes were modeled. They have alternating compressive and tensile strain domains. - 💡 Despite high strains, the band gap remains direct and only changes moderately in size (up to 220 meV). - 🌈 Curvature preserves band gap characteristics unlike strained flat sheets which become metallic. - 🚀 Effective mass analysis shows promise for optoelectronic applications due to carrier localization. - 🔬 Wavefunction distribution correlates with effective mass and strain localization effects. - 💥 Strong electron-hole localization expected at peaks for high strains, indicating high optical activity. This research demonstrates the potential of engineered MoSe2 nanowrinkles for integrated photonics and optoelectronics! The microscopic insights pave the way for future quantum technologies. 🤯 What do you think? Let me know your thoughts on these exciting findings! 👇 #AWS #partyrock #hackathon #nanowrinkles #materialsscience made with : https://lnkd.in/gQub32Rc

New results present a groundbreaking advance in #optical #microscopy, bringing it to the ultimate length and time scales simultaneously. Direct observation of ultrafast tunneling currents could enable unprecedented understanding of #electronic #dynamics in #quantum materials and quantum platforms for #computing and #datastorage. NOTE furthermore opens the door to #atomicscale #strongfield dynamics such as #lightwave #electronics. The discovery of this #communication #channel with the quantum world could, just like Hertz's findings over 100 years ago, spark a revolution in #informationtransfer. Moreover, it could be key to understanding the #microscopic dynamics shaping the #devices of tomorrow. #Hertz #Macroni

Researchers have developed a method to grow ultra-flat bismuth crystals inside a van der Waals nanoscale mold, unlocking enhanced electronic transport and quantum oscillations. 🧬🔬 Read the full story here: https://lnkd.in/ez6JDRUp #QuantumTech #QuantumMaterials #Nanotechnology

A team of researchers from China has reported an advancement in the development of single photon sources, key components for quantum computers and secure communication networks. Their study, published in Light: Science & Applications, presents a new type of single photon source. This source, based on a quantum dot embedded in a purpose-designed microcavity, integrates several innovations, achieving a combination of performance metrics previously undemonstrated. This development could potentially influence the progression of quantum information technologies. https://lnkd.in/gCzKJw9Q

Evidence for phonon hardening in laser-excited gold using x-ray diffraction at a hard x-ray free electron laser SCIENCE ADVANCES https://lnkd.in/gVKXuTCh

A high performance ultrafast laser the size of a fingertip According to a new cover article published in the journal Science, researchers at the City University of New York have demonstrated a new way to create high-performance ultrafast lasers on nanophotonics. This miniaturized mode-locked laser emits a series of ultra-short coherent pulses of light at femtosecond intervals (trillionths of a second). Ultrafast mode-locked lasers can help unlock the secrets of nature’s fastest timescales, such as the formation or breaking of molecular bonds during chemical reactions, or the propagation of light in turbulent media. The high speed, peak pulse intensity, and broad spectrum coverage of mode-locked lasers also enable many photon technologies, including optical atomic clocks, biological imaging, and computers that use light to calculate and process data. But the most advanced mode-locked lasers are still extremely expensive, power-demanding desktop systems that are limited to laboratory use. The goal of the new research is to turn this into a chip-sized system that can be mass-produced and deployed in the field. The researchers used a thin-film lithium niobate (TFLN) emerging material platform to effectively shape and precisely control laser pulses by applying external radio frequency electrical signals to it. The team combined the high laser gain of class III-V semiconductors with the efficient pulse shaping capabilities of TFLN nanoscale photonic waveguides to develop a laser emitting a high output peak power of 0.5 watts. #Optical #photonics #semiconductor #Optics #opticalcenter #SiliconPhotonics #photodetectors #optomechanics #laser Read more: https://lnkd.in/epA6y9KJ

X-ray free-electron lasers have allowed scientists "to probe the inner workings of matter on length and time scales characteristic of molecular, atomic and even electronic processes." Read more about new developments in XFELs in our May cover feature 👉https://ow.ly/S9AJ50RqRW3

In the video “How do Electron Microscopes Work?” We explore the fascinating world of electron microscopy, focusing on the Transmission Electron Microscope (TEM) and the Scanning Electron Microscope (SEM). These powerful tools allow scientists to view objects at the nanoscopic level, such as transistors only a few nanometers wide, and even individual atoms. The video explains how TEMs generate a beam of electrons and use magnetic lenses to magnify images of the specimen, while SEMs scan the surface of objects to produce detailed images. The video highlights the critical role of electron microscopes in advancing technology, particularly in the semiconductor industry.  The nanoscopic world is truly wild! Electron microscopes, like the Transmission Electron Microscope (TEM) and Scanning Electron Microscope (SEM), are revolutionizing our understanding of the micro and nanoscopic world. These incredible tools allow us to visualize objects as small as individual atoms, enabling the development of cutting-edge technology in the semiconductor industry. Understanding how TEMs and SEMs work is crucial for anyone involved in this field. TEMs generate and accelerate beams of electrons to capture highly magnified images of internal structures, while SEMs scan the surface of specimens to reveal intricate details. This advanced imaging capability is essential for designing and refining transistors that are only a few nanometers wide. Electron microscopes have transformed the way we see the world and continue to push the boundaries of innovation. By enabling us to observe and manipulate materials at the atomic level, they play a pivotal role in the ongoing advancement of semiconductor technology. #ElectronMicroscope #TEM #SEM #Nanotechnology #SemiconductorIndustry #Nanoscience #AdvancedImaging #TransistorTech #AtomicLevel #ScientificInnovation

Spintronics research finds magnetic state of certain materials can be switched using surface induced strain https://lnkd.in/ethNsSHS #Radialmagnets #Weknowmagnets