New technique builds super-hard metals from nanoparticles — ScienceDaily

Metallurgists have all kinds of ways to make a chunk of metal harder. They can bend it, twist it, run it between two rollers or pound it with a hammer. These methods work by breaking up the metal’s grain structure — the microscopic crystalline domains that form a bulk piece of metal. Smaller grains make […]

New technique builds super-hard metals from nanoparticles

IMAGE: This gold “coin ” was made from nanoparticle building blocks, thanks to a new technique developed by Brown University researchers. Making bulk metals this way allows for precise of the metal’s… view more  Credit: Chen Lab / Brown University PROVIDENCE, R.I. [Brown University] — Metallurgists have all kinds of ways to make a chunk of […]

New technique builds super-hard metals from nanoparticles

This gold “coin” was made from nanoparticle building blocks, thanks to a new technique developed by Brown University researchers. Making bulk metals this way allows for precise of the metal’s microstructure, which enhances its mechanical properties. Credit: Chen Lab / Brown University Metallurgists have all kinds of ways to make a chunk of metal harder. […]

Metastable metallic nanoparticles could find use in electronics, optics

Rice University scientists extended their technique to produce graphene in a flash to tailor the properties of 2D dichalcogenides molybdenum disulfide and tungsten disulfide, quickly turning them into metastable metallics for electronic and optical applications. Credit: Tour Group/Rice University Rice University scientists have extended their technique to produce graphene in a flash to tailor the […]

Nanoparticles as weapons against cancer — ScienceDaily

Many chemotherapeutic agents used to treat cancers are associated with side-effects of varying severity, because they are toxic to normal cells as well as malignant tumors. This has motivated the search for effective alternatives to the synthetic pharmaceuticals with which most cancers are currently treated. The use of calcium phosphate and citrate for this purpose […]

Sound waves spin droplets to concentrate, separate nanoparticles

Credit: CC0 Public Domain Mechanical engineers at Duke University have devised a method for spinning individual droplets of liquid to concentrate and separate nanoparticles for biomedical purposes. The technique is much more efficient than traditional centrifuge approaches, working its magic in under a minute instead of taking hours or days, and requires only a tiny […]

Trapping nanoparticles with optical tweezers

Optical tweezers are a rapidly growing technology, and have opened up a wide variety of research applications in recent years. The devices operate by trapping particles at the focal points of tightly focused laser beams, allowing researchers to manipulate the objects without any physical contact. So far, optical tweezers have been used to confine objects […]

Phytoplankton disturbed by nanoparticles — ScienceDaily

Products derived from nanotechnology are efficient and highly sought-after, yet their effects on the environment are still poorly understood. A research team from the University of Geneva (UNIGE), working in collaboration with the University of California at Santa Barbara, have investigated the effects of nanosilver, currently used in almost 450 products for its antibacterial properties, […]

Creating better diagnostic tools with light scattering nanoparticles

Recent advanced in nanoparticle-based SERS imaging has led to better diagnoses of diseases like cancer, and improvements in image-guided tumor surgeries. Since the discovery of the X-ray more than a century ago, the rapid development of radiological diagnosis welcomed a new era for medical imaging. Through innovative new technologies, not only have we enabled improved […]

Lipid nanoparticles boost potential vaccine against SARS-CoV-2

Researchers enhance the immune response against the receptor binding domain of SARS-CoV-2 by presenting it on liposomes, providing a promising strategy for vaccine development targeting this domain. The SARS-CoV-2 spike protein is a popular target for COVID-19 vaccine development; Image credit: NIAID-RML To enhance the production of neutralizing antibodies against SARS-CoV-2 receptor binding domain (RBD), […]