Showing Spotlights 1 - 8 of 501 in category All (newest first):
Therapeutic nucleic acids (TNAs) and nucleic acid nanoparticles (NANPs) are designed to enact specific intracellular responses beneficial for various biomedical applications. TNAs become especially attractive to researchers and clinicians since their functional versatility, programmability and modularity show great promise for treating disorders such as viral infections, cancers, and genetic disorders. Scientists explore how the immune responses to NANPs change with various factors such as dimensionality (3D vs. 2D), composition (DNA vs. RNA), and functionalization with TNAs.
Aug 15th, 2022
The defenses of the body's immune system tend to destroy synthetic nanoparticles and frequently they are captured and removed from the body within few minutes. This, of course, is a major barrier to the use of nanotechnology in medicine. In order to evade the host immune response, researchers are demonstrating that the combination of nanomaterials and biomimetic strategies can change diverse nanomaterials from 'distinguishable state' to 'camouflage state' and thereby improving technologies for nanomedicine applications.
Aug 9th, 2022
Researchers have developed an optothermal platform with five manipulation modes - printing, tweezing, rotating, rolling, and shooting - using a single Gaussian laser beam. Switching between the different modes is achieved by simply tuning the optical power or the distance between laser and object, and can be automated through software programming. This novel multimodal manipulation technique relies on the coordination of multiple thermal forces instead of light-matter interactions, i.e., the mechanism of traditional optical tweezers.
Jul 25th, 2022
Inspired by living biological systems, which can sense, process information, and actuate in response to changing environmental conditions, researchers are exploring engineered living hydrogels. The convergence of engineering, biology, and materials science over the past 20 years is providing unprecedented opportunities to integrate living cells into these hydrogels. This integration yields engineered living hydrogels with the capabilities of self-replication, self-regulation, and environmental responsiveness.
Jul 11th, 2022
Spontaneous charging of interfaces between water and hydrophobic media is a mysterious feature whose nature and origin - despite many efforts to explain them - are still not fully understood. Many spectroscopic results and interpretations along with computational work are not consistent with one another and a consensus on the nature and origin of interfacial charging has not been reached. A clear understanding of this puzzling phenomenon needs a variety of approaches from diverse perspectives, which, hopefully will all add up and be pieced together towards a complete description of the full picture.
Jul 7th, 2022
The success of mRNA technology in the development of a COVID-19 vaccine has become a groundbreaking development in the fight against cancer, as well as in the development of new vaccines against many other infectious diseases, including HIV. Future nanotechnology-based mRNA vaccines could allow the delivery of multiple antigen-targeted vaccines in one vaccine lipid nanoparticle to protect against multiple diseases, thereby reducing the number of vaccines needed to prevent common vaccine-preventable diseases.
Jul 5th, 2022
The controlled rotation of micro- and nanoscale objects plays a crucial role in sensing, imaging, biomedicine, and manufacturing. What makes light-driven micro- and nanorotors so promising for many applications is their non-contact, fuel-free operation. It has remained challenging for simple and low-power optics to achieve light-driven rotation of a wide range of objects, including optically symmetric synthetic particles and biological cells. A novel platform elegantly addresses this issue by achieving the rotation of various particles and live cells using an arbitrary low-power laser beam.
Jul 4th, 2022
By irradiating a pure tellurium target in deionized water, researchers formed 'naked' tellurium dioxide nanoparticles with a spherical morphology and a size of around 70 nm. The surface of those nanoparticles is totally clean (hence 'naked'), meaning that it does not contain any residues from chemical reactions. This surface cleanliness makes them ideal to interact with biological pathogens and it takes less than 10 ppm to eradicate deadly pathogens like multi-drug resistant E. coli and Methicillin-resistant S. aureus.
Jul 1st, 2022