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Key achievements and challenges in STM and AFM

Peter Grütter talks about progress in identifying structure-function relations at the atomic scale using atomic force microscopy.

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

Lab talk

Nanotechnology research highlights: find out what the authors have to say

Understanding today the light sources of tomorrow

Resolving the debate on the radiative recombination mechanism in next-generation high-efficiency, phosphor-free, white LEDs.

Laser beam exfoliates graphite to form chemically tunable platform

Green synthesis route produces free-standing reduced graphene oxides at water–air interface.

ZrO2 nanoparticles boost colour temperature uniformity in white LEDs

Deviations in angular-dependent correlated colour temperature could be improved by 58%.

Seed particles govern nanowire growth and properties

Gold-seeded GaN nanowires grow slower compared with nickel-seeded ones and also contain 2D defects that are seldom found in nickel-seeded GaN nanowires.

Analysis compares growth mechanisms of Zn-polar ZnO nanowires on O-polar ZnO and on sapphire

Understanding how nanowires grow on different substrates will help developers to optimize the performance of devices such as photovoltaic solar cells, nano-generators and light-emitting diodes

Metallic ferrofluids show optical limiting

Nickel nanofluid with kerosene base displays optical limiting and magnetic field dependent transmission

Time-resolved fluorescence spectroscopy looks deeper into germanium nano-islands in silicon

Fluorescence spectra with nanosecond temporal resolution reveal charge-recombination dynamics at a glance

Vectorial recipe serves up a Xe'ek of multi-waves

Combined action of metallic nanosystems gives ultrafast all-optical phase modulation

InGaN/GaN heterostructures: building blocks for solid-state lighting

Optical analysis of single nanowire emission identifies main source of loss and reveals route for improving the performance of nanoLEDs

Electron beam lithography forms 2D hybrid photonic crystal slab

Nanocrystal inclusions allow developers to manipulate refractive index and light-emitting properties of polymer film

Multicolour biomarkers formed by encapsulating organic dyes in nano matrix

Nanocomposites offer higher brightness, longer lifetime and stronger resistance to photobleaching

Laser-assisted synthesis of gold-silver nanochains

Necklace-like assembly with non-linear optical properties formed using custom-made copper vapour laser

High-speed laser scanning forms periodic nano-trenches on silicon

Japanese researchers demonstrate high-throughput fabrication of nanostructures over a large area using dual laser set-up

Investigating low-temperature optical properties of nanorod LED arrays

Researchers examine low-temperature electroluminescence of GaN test devices to understand light extraction benefits in more detail

Laser-assisted CVD modulates CNT diameter

Segmented carbon nanotubes show diode-like device behaviour

GaN-nanoworld shaped to optimize optoelectronics

Close to conventional growth process could push LEDs closer to efficiency limits

Laser welding boosts efficiency of TiO2 solar cells

Irradiating inter-electrode interface with UV beam during manufacture improves current flow in dye-sensitized solar cells

LEDs for high-efficiency solid-state lighting

Could embedded photonic crystals be the way forwards?

Nitrides at the Nanoscale

Nanoscale structure of nitride LEDs has a profound impact on performance

Road towards wearable organic displays

Researchers demonstrate top emission solution processed OLED featuring CNT transparent electrode