Science

Tags:

Zips on the nanoscale: New method of synthesising nanographene on metal oxide surfaces

Nanostructures based on carbon are promising materials for nanoelectronics. However, to be suitable, they would often need to be formed on non-metallic surfaces, which has been a challenge - up to now. Researchers at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) have found a method of forming nanographenes on metal oxide surfaces.

55547.jpg
The desired nanographenes form like dominoes via cyclodehydrofluorination on the titanium oxide surface. All ‘missing’ carbon-carbon bonds are thus formed after each other in a formation that resembles a zip being closed.

Tags:

When semiconductors stick together, materials go quantum: A new study led by Berkeley Lab reveals how aligned layers of atomically thin semiconductors can yield an exotic new quantum material

A team of researchers led by the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) has developed a simple method that could turn ordinary semiconducting materials into quantum machines - superthin devices marked by extraordinary electronic behavior. Such an advancement could help to revolutionize a number of industries aiming for energy-efficient electronic systems - and provide a platform for exotic new physics.

55556.jpg
The twist angle formed between atomically thin layers of tungsten disulfide and tungsten diselenide acts as a "tuning knob," turning ordinary semiconductors into an exotic quantum material.

Tags:

Galactic Wind Provides Clues to Evolution of Galaxies

PIA23010-16_0.jpg
The magnetic field lines of the the Cigar Galaxy (also called M82) appear in this composite image. The lines follow the bipolar outflows (red) generated by exceptionally high rates of star formation.

Tags:

The moiré patterns of three layers change the electronic properties of graphene

Combining an atomically thin graphene and a boron nitride layer at a slightly rotated angle changes their electrical properties. Physicists at the University of Basel have now shown for the first time the combination with a third layer can result in new material properties also in a three-layer sandwich of carbon and boron nitride.

55552.jpg
A graphene layer (black) of hexagonally arranged carbon atoms is placed between two layers of boron nitride atoms, which are also arranged hexagonally with a slightly different size. The overlap creates honeycomb patterns in various sizes.

Tags:

New optical imaging system could be deployed to find tiny tumors: Near-infrared technology pinpoints fluorescent probes deep within living tissue; may be used to detect cancer earlier

Many types of cancer could be more easily treated if they were detected at an earlier stage. MIT researchers have now developed an imaging system, named "DOLPHIN," which could enable them to find tiny tumors, as small as a couple of hundred cells, deep within the body.

55554.jpg
MIT researchers have devised a way to simultaneously image in multiple wavelengths of near-infrared light, allowing them to determine the depth of particles emitting different wavelengths.

Tags:

Why Do Some Galactic Unions Lead to Doom?

PIA23006_hires_0.jpg
Why Do Some Galactic Unions Lead to Doom?
This image shows the merger of two galaxies, known as NGC 7752 (larger) and NGC 7753 (smaller), also collectively called Arp86. In these images, different colors correspond to different wavelengths of infrared light. Blue and green are wavelengths both strongly emitted by stars. Red is a wavelength mostly emitted by dust

Tags:

First evidence of planet-wide groundwater system on Mars

Example_of_basin_features_large_0.jpg

Tags:

Can a flowing liquid-like material maintain its structural order like crystals?

Scientists at Tokyo Tech discovered a chiral compound, which can spontaneously form a molecular assembly with an extremely large single domain structure beyond a size regime incapable of realizing with usual molecular self-assembly. The chiral compound, when heated and left to cool on a solid substrate, gives a droplet featuring a single-crystal-like structure. When the substrate is set up vertically, the droplet exhibits sliding and rotating motion controlled by the chirality while preserving the single-crystalline structural order. The scientists investigated the origin of the very unique structuring and macroscopic rotational sliding behavior. These findings will extend our understanding of the formation and motility of soft matter with a higher-order structure.

55537.png

Tags:

CEA-Leti Breakthrough Opens Path to New Vaccine for HIV: Lipidots Platform Strengthens Immune Response to Protein That Is Key to HIV Vaccine; Results Presented in Nature Publishing Group’s npj Vaccines

Leti, a research institute of CEA Tech, in collaboration with CEA’s Fundamental Research Division and INSERM, has developed a new vaccine approach for HIV based on engineered lipid nanoparticles that deliver p24 – a viral protein that is key to an HIV vaccine – and optimize the CpG adjuvant’s effect.

55538.jpg

Tags:

Signs of ancient flowing water on Mars

Perspective_view_of_ancient_river_valley_network_on_Mars_large_0.jpg
Perspective view of ancient river valley network on Mars

Could not connect2