Nano planet

Silver nanoparticles take spectroscopy to new dimension

ScienceDaily.com: Nanotechnology News - 2 января, 2018 - 19:42
As medicine and pharmacology investigate nanoscale processes, it has become increasingly important to identify and characterize different molecules. Raman spectroscopy, which leverages the scattering of laser light to identify molecules, has a limited capacity to detect molecules in diluted samples because of low signal yield, but researchers in India have improved molecular detection at low concentration levels by arranging silver nanoparticles on silicon nanowires.
Категории: Nano planet

Medication to prevent osteoporotic fractures may hinder the repair of damaged tissue

ScienceDaily.com: Nanotechnology News - 2 января, 2018 - 18:38
A study has found that one of the most common medications to prevent osteoporitic fractures gives rise to previously unknown mineralization of bone cells. The discovery may be important for understanding the effect of medication on bone quality.
Категории: Nano planet

Sensor the size of a nitrogen atom investigates hard drives

Nanowerk.com - 2 января, 2018 - 11:30
Researchers have developed a quantum sensor that will be able to precisely measure the tiny magnetic fields we can expect to see in the next generation of hard discs. The sensor itself is just slightly larger than a nitrogen atom, with a synthetic diamond to act as a substrate.

Категории: Nano planet

Atomristor - memristor effect in atomically thin nanomaterials

Nanowerk.com - 2 января, 2018 - 11:06
In trying to bring brain-like (neuromorphic) computing closer to reality, researchers have been working on the development of memory resistors, or memristors, which are resistors in a circuit that 'remember' their state even if you lose power. Now, scientists have discovered non-volatile memory effect in atomically thin 2D materials such as MoS2. This effect is similar to memristors or RRAM in metal oxide materials. These devices can be collectively labeled atomristor, in essence, memristor effect in atomically thin nanomaterials or atomic sheets.

Категории: Nano planet

Single metalens focuses all colors of the rainbow in one point

Nanowerk.com - 2 января, 2018 - 10:59
Lens opens new possibilities in virtual and augmented reality.

Категории: Nano planet

Carbon nanotube as ultrafast emitter with narrow energy spread at optical frequency

Nanowerk.com - 2 января, 2018 - 10:53
Scientists have successfully demonstrated exciting findings on the realization of field-driven ultrafast photo electron emission, in a system capable of much higher phase synchronization than its photon-driven counterpart.

Категории: Nano planet

Single metalens focuses all colors of the rainbow in one point

ScienceDaily.com: Nanotechnology News - 1 января, 2018 - 22:47
Metalenses -- flat surfaces that use nanostructures to focus light -- promise to revolutionize optics by replacing the bulky, curved lenses currently used in optical devices with a simple, flat surface. But, these metalenses have remained limited in the spectrum of light they can focus well. Now a team of researchers has developed the first single lens that can focus the entire visible spectrum of light -- including white light -- in the same spot and in high resolution.
Категории: Nano planet

Carving out circuits that click into place

Nanowerk.com - 28 декабря, 2017 - 21:22
An easy and reliable assembly approach, inspired by building blocks, challenges the current fabrication of electronic systems.

Категории: Nano planet

Probing water molecules at cell membrane interfaces

Nanowerk.com - 28 декабря, 2017 - 10:13
Ultrafast laser pulses offer insights into the role water plays in transport through biological membranes.

Категории: Nano planet

Atomically thin perovskites boost for future electronics

Nanowerk.com - 27 декабря, 2017 - 21:02
Researchers have developed the world's highest performance dielectric nanofilms using atomically thin perovskites. This technology may revolutionize the next-generation of electronics.

Категории: Nano planet

A novel approach to visualize the 3D structure of individual dopant atoms

Nanowerk.com - 27 декабря, 2017 - 20:56
Viewing atomic structures of dopant atoms in 3D relating to electrical activity in a semiconductor.

Категории: Nano planet

Project will provide reaction kinetics data for synthesis of metallic nanocrystals

ScienceDaily.com: Nanotechnology News - 27 декабря, 2017 - 18:00
Researchers have published the first part of what they expect to be a database showing the kinetics involved in producing colloidal metal nanocrystals -- which are suitable for catalytic, biomedical, photonic and electronic applications -- through an autocatalytic mechanism.
Категории: Nano planet

Project will provide reaction kinetics data for deterministic synthesis of metallic nanocrystals

Nanowerk.com - 27 декабря, 2017 - 16:03
Researchers have published the first part of what they expect to be a database showing the kinetics involved in producing colloidal metal nanocrystals - which are suitable for catalytic, biomedical, photonic and electronic applications - through an autocatalytic mechanism.

Категории: Nano planet

Driving soft molecular vehicles on a metallic surface

Nanowerk.com - 27 декабря, 2017 - 12:37
Soft molecules deposited on metallic surfaces were driven using a scanning tunneling microscope (STM) without mechanically pulling or pushing them, but by inducing inelastic excitations with the tunneling current.

Категории: Nano planet

Innovative transistors based on magnetically induced movement of ions

Nanowerk.com - 27 декабря, 2017 - 12:32
Just as magnets attract iron particles in sandpits, permanent magnetics only attract one type of ion in an electrochemical solution, constituting the basis of magnetically controlled electrochemical transistors.

Категории: Nano planet

Confined topological superconductors host novel chiral states

Nanowerk.com - 27 декабря, 2017 - 11:54
Topological superconductivity is an interesting state of matter, partly because it is associated with quasiparticle excitations, which are Majorana fermions, i.e. particles that are their own antiparticles, obeying non-Abelian statistics and therefore being of prime interest for topological quantum computing. A well-known example are chiral superconductors with px±ipy-wave pairing of electrons into a condensate of Cooper pairs, the carriers of superconductivity. Researchers suggest to consider mesoscopic samples, confined to the energetically favorable domain size, as a suitable platform to verify and potentially control the chiral domains.

Категории: Nano planet

Thermoelectric power generation at room temperature: Coming soon?

ScienceDaily.com: Nanotechnology News - 26 декабря, 2017 - 23:40
A research team has created a thermoelectric material with promising performance at room temperature. Ytterbium silicide is a good electrical conductor. It also has a high Seebeck coefficient thanks to Kondo resonance (fluctuation of f-electrons), which increases its power factor. Its layered structure further promotes the thermoelectric effect by blocking heat conduction. This non-toxic, room-temperature thermoelectric material is competitive with conventional bismuth telluride, and could be used for power generation or refrigeration.
Категории: Nano planet

Thermoelectric power generation at room temperature: Coming soon?

Nanowerk.com - 26 декабря, 2017 - 12:36
Researchers create a thermoelectric material (ytterbium silicide) with a high power factor at room temperature.

Категории: Nano planet

Nanowire device detects cancer with a urine test

Nanowerk.com - 25 декабря, 2017 - 11:45
Researchers have developed a nanowire device able to detect microscopic levels of urinary markers potentially implicated in cancer.

Категории: Nano planet

Electronically-smooth '3D graphene'

Nanowerk.com - 22 декабря, 2017 - 22:42
Electronically-smooth nature of trisodium bismuthide makes it a viable alternative to graphene/h-BN.

Категории: Nano planet