Ring my string: Building silicon nano-strings
Tightening a string, e.g. when tuning a guitar, makes it vibrate faster. But when strings are nano-sized, increased tension also reduces, or 'dilutes', the loss of the string's vibrational modes.
In physics, 1-dimensional systems are idealized physical models constrained to a single spatial dimension, where all relevant degrees of freedom vary along one coordinate while transverse dimensions are neglected or treated as frozen. Such systems are fundamental in statistical mechanics, condensed matter, and field theory, enabling exact or quasi-exact treatments of phenomena like phase transitions, transport, and quantum correlations. They exhibit distinctive behavior, including enhanced fluctuations, restricted ordering, and nontrivial topological or conformal structures, and are often described by specialized frameworks such as Luttinger liquid theory, integrable spin chains, or exactly solvable lattice and continuum models.
Tightening a string, e.g. when tuning a guitar, makes it vibrate faster. But when strings are nano-sized, increased tension also reduces, or 'dilutes', the loss of the string's vibrational modes.
Nanophysics
Feb 28, 2022
0
466
Nanowires, used in sensors, transistors, optoelectronic devices and other systems that require subatomic preciseness, like to stick together. Untangling electrical wires can be a difficult task—imagine trying to separate ...
Nanomaterials
Feb 11, 2022
0
134
Smaller chips, faster computers, less energy consumption. Novel concepts based on semiconductor nanowires are expected to make transistors in microelectronic circuits better and more efficient. Electron mobility plays a key ...
Nanophysics
Feb 7, 2022
0
197
Researchers from Tokyo Metropolitan University have succeeded in using nanowires of a transition-metal chalcogenide to make atomically thin nanoribbons. Bundles of nanowires were exposed to a gas of chalcogen atoms and heat ...
Nanomaterials
Jan 31, 2022
0
132
Zeolites, which are crystalline porous materials, are very widely used in the production of chemicals, fuels, materials, and other products. So far, zeolites have been made as 3D or 2D materials. This has changed with the ...
Nanomaterials
Jan 21, 2022
0
247
Carbon nanotubes are of great interest in both scientific research and commercial applications thanks to the unique properties of the material. A new thesis at Karlstad University looks at how the atomic structure influences ...
Nanomaterials
Jan 18, 2022
0
136
Ever since graphene—a thin carbon sheet just one-atom thick—was discovered more than 15 years ago, the wonder material became a workhorse in materials science research. From this body of work, other researchers learned that ...
Nanophysics
Dec 22, 2021
0
1235
In a recent study published in Matter, Chinese researchers observed the dynamic gating process at sub-2 nm speed in nanochannels.
Nanomaterials
Dec 15, 2021
0
116
Carbon nanotubes are one of science's best kept secrets.
Nanomaterials
Nov 15, 2021
0
217
The potential of DNA structural properties in single-molecule electronics has finally been harnessed by researchers from Tokyo Institute of Technology (Tokyo Tech) in a single-molecule junction device that shows spontaneous ...
Nanomaterials
Nov 2, 2021
0
118