Scientists have developed a new method that improves dispensing of viscoelastic fluids - a vital process for circuit board production, 3D printing and other industrial applications. The scientists found that twisting these liquid bridges breaks them in a quicker and cleaner way than the conventional method of stretching them.
Researchers at the University of Gothenburg have observed the absorption of a single electron by a levitated droplet with such a magnification that it is visible with the naked eye and can even be measured with a normal millimeter scaled ruler.
In our study, we constructed a detecting platform based on TpTta-COF nanosheets and fluorescent probe. The TpTta-COF nanosheets can adsorb single-stranded DNA (ss-DNA) probes and quench the fluorescence of ss-DNA. The method enables to capture miR-205 sensitively in aqueous solution with a detection limit of 4.78 nM in the range 0-500 nM and R2 = 0.989, and the method offers great specificity in that it can distinguish the target miRNA from mismatch non-target miRNAs.
Osaka University researchers create an intelligent nanopore system sensitive enough to detect single SARS-CoV-2 virus particles. By training a machine-learning algorithm, the platform was able to identify between various coronaviruses in just five minutes. This work may lead to fast and accurate point-of-care testing for COVID and other communicable diseases.
A recent study by Nagoya University researchers revealed that microRNAs in urine could be a promising biomarker to diagnose brain tumors. Their findings have indicated that regular urine tests could help early detection and treatment of brain tumors, possibly leading to improved patient survival.
While crop yield has achieved a substantial boost from nanotechnology in recent years, the alarms over the health risks posed by nanoparticles within fresh produce and grains have also increased. In particular, nanoparticles entering the soil through irrigation, fertilizers and other sources have raised concerns about whether plants absorb these minute particles enough to cause toxicity.
An international team including researchers from The University of Tokyo Institute of Industrial Science has developed spherical colloidal particles for the visualization of rotational dynamics. The two-color fluorescent particles have an off-center core that allows tracking of dense suspensions using microscopy. The researchers observed coupling between the rotation of charged particles, correlation between local crystallinity and rotational diffusivity, and "slip-stick" friction between particles. The findings will enhance the understanding of biological systems and industrial processes.
Nanoengineers at the University of California San Diego have developed immune cell-mimicking nanoparticles that target inflammation in the lungs and deliver drugs directly where they're needed. As a proof of concept, the researchers filled the nanoparticles with the drug dexamethasone and administered them to mice with inflamed lung tissue. Inflammation was completely treated in mice given the nanoparticles, at a drug concentration where standard delivery methods did not have any efficacy.
Magnetic-spin interactions that allow spin-manipulation by electrical control allow potential applications in energy-efficient spintronic devices. A Chinese-Australia collaboration published today describes for the first time the induction of such interactions in a layered material tantalum-sulfide by addition of iron atoms, and tuning by insertion of protons.
Researchers reporting in Advanced Photonics demonstrate the conversion of infrared images to the visible, using ultrathin and transparent semiconductor nanocrystals.