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IOP A community website from IOP Publishing

Feynman Lectures 50th anniversary celebration seminar series


Building a brain: The atomic switch network

Speaker: James K Gimzewski from the University of California in Los Angeles

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Buyer’s Guide

LEDs

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

Technology update

Opals turn atom spectra upside down

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.

Lab talk

Ultraviolet light-emitting diodes: high efficiency and low cost

High-temperature growth enables short emission wavelength LEDs based on wide band gap semiconductors.

Controlling carbon nanotube photoluminescence

Silicon microring resonators could be key to carbon nanotube-based light sources.

Controlling emission from one dimensional photonic crystals for improved detection

Using near-field coupled emission can enhance or direct fluorescence

Ordered In(Ga)N nanocolumns grown on silicon

Rod-like structures fabricated via selective area growth process are ideal for LED applications and can be tuned across wide spectral range