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Key achievements and challenges in STM and AFM

Mervyn Miles describes achievements in high-resolution high-speed AFM and challenges in applying it to living cells.

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Using nanotechnology to enhance the performance of LEDs and other light sources

Technology update

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OLEDs benefit from organic electron injection material

An organic radical has been successfully harnessed to improve OLED efficiency and stability for the first time.

First charge transfer between silicon and rare earth observed

Silicon-based room-temperature mid-infrared photodetectors may now be within reach.

Quantum dots tune millisecond fluorescence lifetimes

(with audio) Conjugating organic fluorophores to semiconductor quantum dots doped with manganese ions can extend the fluorescence lifetime from nano- to milliseconds.

Etch masks reach a higher dimension

Researchers devise a single-step process for fabricating etched structures aligned on more than one plane.

CHInano combines research and commerce

With 5000 visitors from research, business and government policy, nanotechweb visits Nanopolis to find out more about the CHInano Conference and Expo.

Making perovskite solar cells more stable

New work might help in the future commercialization of these low-cost, efficient devices.

Single sheet lases white

A chemically tailored single nanosheet demonstrates simultaneous lasing in all the colours needed to create white light.

Taking the heat off silicon optical devices

Pulsed laser deposition offers a cooler CMOS-compatible approach for fabricating photoluminescent silicon nanocrystal fabrication.

Liquid gain makes tunable plasmon laser

Nanocavity device could be used to detect weak physical and chemical processes in real time.

Opals turn atom spectra upside down

(with audio) The natural simplicity of atoms as perfect resonators reveals new optical behaviour in photonic crystals.

Nonlinear signals benefit from top coat

A silver-coated nanowire provides efficient, tunable and directional nonlinear signals for photonic systems.

Striking a balance for better quantum dot LEDs

A quantum dot LED structure that includes an insulating layer to balance charge injections demonstrates greater efficiency and stability.

Photonic crystals: how defects lead to a prison for light

Researchers demonstrate how defects in a 3D crystal can create photonic bandgap cavities for light that may be useful for lasing, LEDS, information storage and sensitive pharmaceutical sensors

Nano-antenna boosts nonlinear optics

Plasmonic field enhancements increase nonlinear interactions by a factor of a million.

Nano-LEDS brighten nanocircuit prospects

Electrically driven nanoscale light source connects electronic and optical circuits.

Nanogaps intensify terahertz waves

New technique to produce extremely thin gaps in metal layers could help make ultrafast and energy efficient nanodevices

Piezophototronics makes highly sensitive skin-like sensor

First nanowire LED arrays capable of converting applied mechanical pressure into light signals

'Lattice plasmons' help make for new nanolaser

Device bodes well for next-generation information technology in which photons rather than electrons make up circuit components

Nanoscale processor controls light with light

Cluster of gold nanodisks enhances optical circuits