Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Ångström-scale terahertz time-domain spectroscopy is demonstrated in a lightwave-driven scanning tunnelling microscope. Employing a metal surface as a reference, local terahertz near-fields are used for spectroscopy of a single atom resonator defect in doped gallium arsenide.
Free-electron Ramsey imaging enables space-, time- and phase-resolved electron imaging of weak optical near fields. Owing to its phase-resolving ability, this technique images chiral vortex–anti-vortex phase singularities of phonon-polariton modes in hexagonal boron nitride.
High-entropy hybrid perovskites exhibit improved materials properties compared with their individual components. When employed in solar cells, champion devices achieve a certified power conversion efficiency of 25.5% and an extrapolated T90 lifetime of over 5,000 h under continuous light soaking.
A wide-field wavefront sensor consisting of a microlens array on the native image plane enables observation of atmospheric turbulence over a field of view of 1,100 arcsec at 30 Hz with an 80 cm telescope. With the aid of a neural network, turbulence can be predicted 33 ms in advance.
Shortwave infrared photothermal microscopy enables chemical imaging at millimetre depths with a micrometre spatial resolution in tissue-mimicking phantoms, intact tumour spheroids and various biological tissues.
Exploiting the energy transfer between the host triplet states and spin doublet exciton states of a radical organic emitter enables near-infrared organic light-emitting diodes with an external quantum efficiency up to 9.6% at an emission wavelength of 800 nm.
Spatial distribution of the photoluminescence of interlayer excitons in van der Waals heterostructures comprising MoSe2 and WSe2 monolayers and encapsulated in rather thick hexagonal boron nitride is investigated, revealing interlayer exciton long-range transport with 1/e decay distances reaching and exceeding 100 μm.
Non-radiative decay in two-dimensional WSe2 quantum emitters is electrically suppressed through charge depletion using dual gate configurations. The single-photon emitter transition quantum efficiency after gating is increased to 76.4 ± 14.6% on average.
Super-resolved photonic force microscopy employs the fluorescence of lanthanide-doped nanoparticles as a force probe, enabling the measurement of sub-femtonewton forces with a sensitivity of 1.8 fN Hz–1/2, approaching the thermal limit.
Using the 3R phase of molybdenum disulfide nanodisks with various radii, more than 100-fold enhancement of second-harmonic generation can be obtained in a single resonant nanodisk compared with an unpatterned flake of the same thickness.
A single-metasurface-based holographic light projection covering the whole 360° field of view is realized by optimizing the metasurface design through a neural network and applying 360° structured light for holographic light projection and three-dimensional imaging.
High-harmonic spectroscopy is employed to investigate the electron–phonon, anharmonic phonon–phonon coupling, and their relaxation dynamics in solids. It reveals the maximum displacement of neighbouring oxygen atoms in α-quartz crystal to tens of picometres in real space.
By measuring the Brillouin gain only at mechanical frequencies of interest, Brillouin gain microscopy enables Brillouin imaging with a temporal resolution of 100 µs with excitation energies of 23 µJ on biological samples.
A fully hybrid integrated erbium-doped photonic integrated waveguide laser with wide tuning of 40 nm, side-mode suppression ratio of >70 dB and output power up to 17 mW is demonstrated, achieving not only footprint reduction but also the long-anticipated fibre-laser coherence.
Researchers show that atom-like dipoles based on germanium vacancy centres in diamond may be useful as antennas, exhibiting million-fold near-field optical intensity enhancement. These antennas are used to detect and control the charge state of nearby carbon vacancies.
Ultrafast optical experiments using narrow-bandwidth tunable IR laser pulses enable nonvolatile all-optical switching of ferroelectric polarization in BaTiO3 in the epsilon-near-zero regime.
Nanofabricated strained photonic crystals in silicon platforms enable the formation of photonic Landau levels at telecommunication wavelengths, with broad potential applications for enhanced light–matter interactions on-chip.
Advancements in laser-driven ceramic phosphors yield a high-power broadband near-infrared light source which suits applications in next-generation spectroscopy.
