Tag

Nanotubes

All articles tagged with #nanotubes

science1 month ago•5 min saved

Light as a Nanoscale Brake: Quantum Friction Slows Nanotubes in Water

Scientists report that shining light on fluorescent carbon-mesh nanotubes suspended in water slows their diffusion due to light-induced quantum friction: excited electrons (excitons) couple with nearby water and transfer momentum, effectively acting as a nanoscale brake. The slowdown grows with light intensity and vanishes when exciton mobility is hindered by defects, a finding confirmed by terahertz spectroscopy. This reveals a blurred boundary between solid and liquid behavior at the nanoscale and could enable light-controlled nanorobots and reaction tuning.

via ScienceAlert|

#diffusion #excitons #nanotubes

science10 months ago•2 min saved

Scientists Discover New Neural Connection

Scientists have discovered a new type of connection between neurons called dendritic nanotubes, which can transport molecules like calcium and amyloid-beta, potentially playing a role in neurodegenerative diseases such as Alzheimer's. This discovery was made using advanced imaging techniques and could lead to new insights into brain function and disease progression.

via ScienceAlert|

#alzheimers #brain #nanotubes

neuroscience3 years ago•4 min saved

Uncovering Neural Tunnels in Developing Brains.

Scientists from the Institut Pasteur and the CNRS, in collaboration with Harvard University, have discovered a novel type of connection between neural precursor cells via nanotubes, even before the formation of synapses, the conventional junctions between neurons. These nanoscopic tunnels connect precursor cells in the cerebellum as they mature into neurons, enabling the exchange of molecules that help pre-neuronal cells physically migrate across various layers and reach their final destination as the brain develops. The researchers used a three-dimensional (3D) electron microscopy method and brain cells from mouse models to study how the brain regions communicate between each other.

via Neuroscience News|

#3d-imaging #brain-development #cerebellum