Tag

Nanoscience

All articles tagged with #nanoscience

science8 days ago•6 min saved

Europe launches replication drive to test carbon quantum dot biosensors

A Europe-backed NanoBubbles project is funding nanoscientists to replicate a 2012 study that carbon quantum dots can sense copper ions inside living cells, the first large-scale replication effort in the physical sciences aimed at the reproducibility crisis; initial attempts failed to reproduce the reported fluorescence change, illustrating how small impurities, incomplete protocols, and cross-lab variation can affect results, as the ERC-backed effort seeks self-correction in science.

via Nature|

#biosensors #nanoscience #quantum-dots

science1 month ago•6 min saved

Louis Brus, Quantum Dot Pioneer and Nobel Laureate, Dies at 82

Louis E. Brus, a Bell Labs chemist who discovered quantum dots—nanocrystals whose color depends on size—died at 82 from myelodysplastic syndrome. His 1983 discovery revealed size-tunable optical properties, helping ignite nanoscience and earning him the 2023 Nobel Prize in Chemistry with Moungi Bawendi and Aleksey Yekimov. Quantum dots now enhance displays and medical imaging and may power future solar cells and encryption; Brus later taught at Columbia after leaving Bell Labs in 1996 and continued research on carbon nanotubes and graphene.

via The New York Times|

#bell-labs #louis-brus #nanoscience

science7 months ago•2 min saved

Scientists Discover a Mind-Bending, Impossible Form of Time

Scientists at the University of Maryland have experimentally measured a phenomenon called imaginary time, a concept from quantum theory, by observing how microwave radiation interacts with materials. This discovery could enhance sensing and storage technologies and improve understanding of how information is affected as light travels through different media.

via Yahoo|

#imaginary-time #microwave-radiation #nanoscience

science8 months ago•3 min saved

Podila Named Fellow of the Institute of Physics

Ramakrishna Podila, a Clemson University physicist, has been named a Fellow of the Institute of Physics for his interdisciplinary work in condensed matter, nanoscience, and emerging fields like quantum biology, with significant contributions to energy storage and nanophysics.

via Clemson News|

#fellowship #institute-of-physics #nanoscience

science-and-technology2 years ago•3 min saved

Unveiling Hidden Materials with Nanometrology

A new study published in Science Advances explores the field of subsurface nanometrology, focusing on internal measurements at the nanoscale level. The researchers suggest that quantum sensing techniques, such as using quantum probes, could revolutionize subsurface exploration. This could have applications in various fields, including targeted drug delivery, quantum computing, and characterizing quantum materials. The study highlights the need for new methods to peer inside materials while leaving them intact and emphasizes the potential of quantum science in achieving greater discoveries and understanding in sensing and imaging science.

via Phys.org|

#atomic-force-microscopy #nanoscience #quantum-probes

science-and-technology2 years ago•4 min saved

"Surprising Discovery: Gold Buckyballs and Nanoparticle 'Seeds' are Identical"

Chemists at Rice University have discovered that the tiny gold "seed" particles commonly used in nanoparticle synthesis are actually gold buckyballs, 32-atom spherical molecules. This finding could help researchers understand the mechanisms behind nanoparticle synthesis and improve control over particle shape and properties. The distinction between nanoparticles and molecules is crucial for advancing nanoscience and achieving precise control over matter.

via Phys.org|

#buckyballs #chemistry #gold-nanoparticles

science-and-technology2 years ago•7 min saved

Supercomputer Unveils Cicada Wings' Bacterial Annihilation Secrets

Scientists at Stony Brook University and Oak Ridge National Laboratory have used supercomputer simulations to gain insight into how cicada wings kill bacteria. By replicating the nanostructure of cicada wings, researchers were able to create nanosurfaces with antibacterial properties. The simulations showed that the nanopillars on the nanosurfaces interact with bacterial cell membranes, causing them to stretch and collapse, leading to the bacteria's death. Surprisingly, the height of the nanopillars was not crucial to their antibacterial effectiveness. The researchers plan to further investigate the self-cleaning functionality of the nanosurfaces before applying them to biomedical devices.

via Phys.org|

#antibacterial-surfaces #biomimicry #cicada-wings

crime2 years ago•1 min saved

Ex-Harvard Professor Charles Lieber Receives House Arrest and Fine for Lying About China Ties

Former Harvard Professor Charles Lieber, an expert in nanoscience, has been sentenced to six months of home confinement and two years of supervised release after being found guilty of federal charges related to payments he received from a Chinese government talent program. Lieber was convicted in December 2021 and will avoid prison time.

via The Wall Street Journal|

#charles-lieber #china #crime