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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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Cleantech

A look at how nanotechnology benefits solar cells, water treatment, wind turbines and other clean energy applications

Lab talk

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

Graphene QDs on aligned carbon nanotubes ramp up supercapacitor performance

Hybrid arrays exhibit more than 200% improvement over bare carbon nanotube electrodes

Boron nitride whiskers exhibit extremely high surface area

Porous material could store hydrogen or help to clean up wastewater

Improving the performance of dye-sensitized solar cells at larger cell sizes

Using a metallic Ti foil layer instead of FTO conductive glass and replacing part of the TiO2 nanoparticle layer with a TiO2 nanotube layer in the anode benefits bigger devices.

Ions measure roughness of buried interfaces

Custom SIMS set-up characterizes functional multilayer structures grown using ALD.

Energy storage team designs carbon-encapsulated Fe3O4 nanocrystals

Simple glucose treatment could help to expand the electronic or electrochemical applications of metal oxides.

Li-ion batteries benefit from hierarchical LiFePO4/C

LiFePO4/C cathode offers excellent Li storage performance and high tap density.

CdTe coating improves photo-electron conversion efficiency of ZnO/CdS coaxial nanorods

Stepwise band structure of ZnO/CdS/CdTe photoelectrode helps to improve charge separation and extend electron diffusion length.

Hybrid nanomaterial enhances performance of thermoelectric generator

Asymmetric illumination scheme boosts current in prototype devices.

Imprinted nanovoids trap light in solar cells

Scalable and inexpensive technique suits organic thin-film devices.

1D magnetite nanostructures obtained without templates for energy applications

Fe3O4 nanobelts synthesized by a one-pot and template-free hydrothermal method using Na2CO3 and FeCl2 as reactants.

Flexible organic solar cells equipped with graphene electrodes

Reduced sheet resistance of chemically doped graphene film improves device performance.

Mild post-deposition treatments benefit colloidal nanocrystal solar cells

Use of dilute carboxylic acid solutions improves the photovoltaic response of tetrapod-shaped colloidal nanocrystal solids.

Sandia team demonstrates III-nitride nanowire array solar cells

Nanowire architecture could lead to higher efficiencies by overcoming strain limitations and guiding light via air voids.

Air-assisted fabrication paves the way for low-cost graphene solar cells

Easy-to-make graphene devices are ideal candidates for assorted infrared imaging applications.

Bent substrate enhances water splitting

ZnO nanorod arrays supported by a flexible polyethylene terephthalate substrate exhibit improved photoelectrochemical properties.

Nanowire coating benefits solar energy conversion

Metal oxide enabled silicon electrodes support efficient water solar splitting and hydrogen generation.

Feeling the heat of pyroelectricity

AFM operating in electrostatic force microscope mode reveals evolution of force gradients in gemstone placed on thermally cycled heating stage.

Study compares light trapping in hexagonal and square nano arrays

Array symmetry has little impact compared with other parameters such as periodicity, nanowire diameter and length

Highly flexible Ti-mesh upgrades DSSC electrodes

Dye-sensitized solar cells equipped with TiO2 nanotubes on Ti-mesh outperform foil-based designs in latest study

Quantum dot photonic nanocrystals increase conversion efficiency of solar cells

Self-organized growth and wet etching combined to create unique nanostructures for advanced management of photons and carriers