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A tessellation of a photoacoustic image of a bundle of growing cells that has been genetically modified so as to greatly increase its optoacoustic signature when probed with light.
Are true theorists a dying breed? Does more need to be done to support and encourage young scientists to devote themselves to inventing new theoretical concepts and models?
Light-emitting fibres that suit integration with textiles are prepared by dip-coating a steel wire with an electroluminescent material and then cleverly wrapping the structure with a carbon nanotube sheet that functions as a transparent electrode.
Using an electro-optic effect, submicrometre-sized beams have been shown to exhibit non-paraxial propagation over 1,000 Rayleigh lengths. The discovery does not require inhomogeneous or lossy media like plasmon waveguiding.
Natural hyperbolic materials hold the key to unlocking the full potential of hyperbolic media in nanophotonics. Until now no such materials were available for visible light but recent work finally brings down this roadblock.
A photoacoustic imaging scheme that uses genetically altered cells that express an absorbing pigment can monitor in vivo growth of cells and tumour development.
Researchers take advantage of the nonlinear response of a dipolar glass and observe non-paraxial propagation of a sub-micrometre-sized beam over 103 diffraction lengths.
A gated multilayer black phosphorus photodetector integrated on a silicon photonic waveguide operating in the telecom band is demonstrated with intrinsic responsivity up to 135 mA W−1 and 657 mA W−1 in 11.5-nm- and 100-nm-thick devices, respectively.
Using the collective accumulation of single-scattered waves, scientists manage to image deep within a scattering medium, achieving an imaging depth 11.5 times the scattering mean free path and a near-diffraction-limit resolution of 1.5 µm.
Researchers exploit the strong dependence of gap-plasmon phase velocity on gap width to make a compact phase-modulator. An electromechanically variable gap size enables a 23-μm-long non-resonant modulator with moderate losses.
Warm dense matter (WDM), which falls in the category between plasmas and condensed matter, is expected to exist in planetary interiors. Now, researchers use an X-ray laser to observe the transition to WDM.
