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Feynman Lectures 50th anniversary celebration seminar series


Enhancing signals from the nanoworld

Speaker: Mildred Dresselhaus from MIT

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Blu-ray patterns improve solar cells

Quasi-random nanostructured patterns allow devices to absorb more sunlight.

Supersonic bullets test graphene’s strength

Carbon sheet is eight to 10 times better than steel.

SQAd nanoparticles could help speed up stroke recovery

Nanoassemblies containing squalene and adenosine could help protect neurons following cerebral ischemia and spinal-cord injury.

Protons penetrate graphene

Although theory suggests graphene is impermeable to protons, recent experiments show proton conductance of a single layer may be high.

Graphene neural electrodes deliver the best of both worlds

Flexible, conductive and transparent graphene electrodes enable the study of neuron dynamics with high spatial and temporal resolution.

Nitrogen dopes carbon sheet - even at high temperatures

Processes similar to those already employed in silicon technology could be exploited in graphene-based electronics.

CP light creates chiral nanostructures

Circularly polarized light can produce right- or left-handed twisted nanoribbons.

Stopping phosphorene from degrading

An overlayer of alumina seems to do the trick.

Nonlinear signals benefit from top coat

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

2D metal-dichalcogenides could make thin-film lasers

A tunable optical microcavity confines emitted light into a narrow line.

New 3D topological insulator is the most perfect yet

BiSbTeSe2 behaves just how theory says it should.

Layered tunnel junction reads single molecules

New technique could sequence DNA.

Only the fittest lattice optics will survive

Northwestern researchers have designed new types of artificially structured optical materials thanks to an algorithm based on Darwinian evolutionary principles.

Carbon nanotubes indiscriminately boost transistors

Carbon nanotube electrodes improve organic thin-film transistor performance regardless of the film morphology and structure, studies show.

Topological insulator goes superconducting

First experimental observation of Cooper pairs in a half-Dirac gas.

Nanoalloy can be two-faced

New phase map of copper-nickel shows that the material can be either “mixed” or “Janus”.

'Conformal' perovskite laser makes its debut

Structure also shows promise for solar cells and photodetectors.

Piezoelectrics transform low-power electronics

Researchers get around the mismatch in power requirements between transistor switches and wires by designing a transformer that adjusts the voltage from one to the other.

Size matters for catalyst nanoparticles – but so does phase

Whether platinum particles are used in a gas or liquid reaction is also important.

Graphene growth substrate tailors metal atom magnetism

New result may ultimately prove useful for information storage or for making qubits bits for quantum computing, albeit at very low temperatures.