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Acoustic Graphene Plasmons Study Paves Way for Optoelectronic Applications

Korea Advanced Institute of Science and Technology
– The first images of mid-infrared optical waves compressed 1,000 times captured using a highly sensitive scattering-type scanning near-field optical microscope. –
KAIST researchers and their collaborators at home and abroad have successfully demonstrated a new methodology for direct near-field optical imaging of acoustic graphene plasmon fields. This strategy will provide a breakthrough for the practical applications of acoustic graphene plasmon platforms in next-generation, high-performance, graphene-based optoelectronic devices with enhanced light-matter interactions and lower propagation loss.
It was recently demonstrated that ‘graphene plasmons’ – collective oscillations of free electrons in graphene coupled to electromagnetic waves of light – can be used to trap and compress optical waves inside a very thin dielectric layer separating graphene from a metallic sheet. In such a configuration, graphene� ....

South Korea , Young Hee Lee , Sergeyg Menabde , Seok Jang , Nature Communications , Institute For Basic Science Of Korea , Samsung Research Funding Incubation Center , Nature Communications On , Sungkyunkwan University , School Of Electrical Engineering , National Research Foundation Of Korea , Samsung Global Research Outreach , Samsung Electronics , Department Of Electrical , University Of Minnesota , Institute Of Basic Science , Us National Science Foundation , Professor Min Seok Jang , Electrical Engineering , Min Ho Lee , Computer Engineering , Integrated Nanostructure Physics , Basic Science , Professor Jang , Samsung Research Funding , Incubation Center ,

Greenland landscape history preserved under ice sheet

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Greenland landscape history preserved under ice sheet
Understanding the Greenland Ice Sheet’s history is critical for predicting response to future warming and sea level rise.
Greenland wasn’t always covered in ice. In fact, within the last 1.1 million years, Greenland had thriving vegetation and ecosystems.
That is the conclusion of an international group of researchers, including a scientist from Lawrence Livermore National Laboratory (LLNL), that analyzed sediment at the base of the Camp Century ice core (1.4 kilometers deep) collected in 1966. The research appears in the Proceedings of the National Academy of Sciences.
Understanding the history of the Greenland Ice Sheet (GrIS) is critical for predicting its response to future warming and contribution to sea level rise. For context, if the GrIS completely melted, sea level would rise by approximately 20 feet. ....

United States , Lawrence Livermore National Laboratory , Bruxelles Capitale , Alan Hidy , University Of California , Purdue University , Gund Institute For Environment , Utah State University , Goddard Institute For Space Studies , Williams College , National Science Foundation , Columbia University , University Of Manitoba , University Of Washington , Proceedings Of The National Academy Sciences , University Of Vermont , University At Buffalo , Camp Century , National Academy , Greenland Ice Sheet , Pleistocene Epoch , Accelerator Mass Spectrometry , Early Pleistocene , Goddard Institute , Space Studies , Libre De Bruxelles ,

New vaccination method aims at comprehensive protection against all known influenza mutations

New vaccination method aims at comprehensive protection against all known influenza mutations
One shot, protected forever: This would be a dream come true regarding influenza vaccinations. So far, vaccination against influenza did not provide a lasting protection. The reason: Influenza viruses mutate very fast. Every year, new virus strains emerge against which previous vaccinations provide no or only limited protection. To avoid having to vaccinate against the flu every year, a research network consisting of the University of Konstanz, the University of Tübingen and Technische Universität Dresden is testing an alternative vaccination method. This new method aims at comprehensive protection against all known influenza mutations and thus is a promising candidate for reaching lasting immunity. ....

Baden Wuberg , Oliver Planz , Marcus Groettrup , Technische Universit , Peter Martus , Jacques Rohayem Technische Universit , Emily Henderson , Jacques Rohayem , Klinische Epidemiologie , Professor Peter Martus University Hospital , Interfaculty Institute For Cell Biology , University Hospital Of Tuebingen , Professor Marcus Groettrup University Of Konstanz , University Of Konstanz , Ministry Of Education , Professor Oliver Planz University , Professor Marcus Groettrup , Federal Ministry , Professor Oliver Planz , Professor Peter Martus , University Hospital , Professor Jacques Rohayem , Interfaculty Institute , Cell Biology , Clinical Trial , Electron Microscopy ,

Skeleton of malaria parasite reveals its secrets

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Skeleton of malaria parasite reveals its secrets
Research teams from UNIGE have discovered that the cytoskeleton of the malaria parasite comprises a vestigial form of an organelle called conoid, initially thought to be absent from this species and which could play a role in host invasion.
Plasmodium at the ookinete stage viewed by expansion microscopy. The image shows the cytoskeleton of the pathogen following the labelling of tubulin. The conoid is the ring visible at the upper tip of the cell. © UNIGE/HAMEL
Plasmodium is the parasite causing malaria, one of the deadliest parasitic diseases. The parasite requires two hosts -the Anopheles mosquito and the human- to complete its life cycle and goes through different forms at each stage of its life cycle. Transitioning from one form to the next involves a massive reorganisation of the cytoskeleton. Two teams from the University of Geneva (UNIGE) have shed new light on the cytoskeleton organisation in Plasm ....

Virginie Hamel , Department Of Microbiology , University Of Geneva , Cell Biology , Vestigial Form , Mathieu Brochet , Molecular Medicine , கன்னி ஹ்யாமல் , துறை ஆஃப் நுண்ணுயிரியல் , பல்கலைக்கழகம் ஆஃப் ஜிநீவ , செல் உயிரியல் , ம்யாத்யு சிற்றேடு , மூலக்கூறு மருந்து ,

Researchers grow most lifelike woven bone yet starting from cells

First organoid for bone will greatly increase understanding of bone formation and bone diseases. Imagine using stem cells from your bone marrow. ....

Bart Van Overbeeke , Nico Sommerdijk , Sandra Hofmann , Eindhoven University Of Technology , Eindhoven University , Advanced Functional , Bioengineering Bone , Anat Akiva , Cell Biology , Woven Bone , Advanced Functional Materials , Drug Development , Stem Cells , சாண்ட்ரா ஹாஃப்மேன் , உயிர் பொறியியல் எலும்பு , செல் உயிரியல் , நெய்த எலும்பு , மருந்து வளர்ச்சி , தண்டு செல்கள் ,