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.
X-ray diffraction pattern generated from two different-sized spherical objects in close proximity to each other. The curvature and modulation of the dark fringes in the pattern provide useful information related to the relative position of the two objects and can be interpreted for image reconstruction. The result is a scheme that can perform ultrafast X-ray imaging of nanoscale systems such as a virus.
Scientific claims, particularly those related to devices, are often backed up by standardized characterization. In fields without accepted standards, is it beneficial to strive to establish them?
Nicolaas Bloembergen made rich contributions to nuclear magnetic resonance, masers and lasers, nonlinear optics and ultrafast laser–matter interactions. The Nobel laureate sadly passed away on 5 September 2017. Here are my memories of my Harvard mentor, a remarkable person and a wonderful scientist.
Phosphors often suffer luminescence quenching at elevated temperatures. Now, thermal quenching can be combated with surface phonon-assisted energy transfer, enabling the luminescence of ultrasmall upconversion nanophosphors to be dramatically enhanced.
With the availability of high-intensity terahertz free-electron lasers, surprisingly large multiphoton absorptions in a phosphorus atom doped in a silicon crystal have been obtained, providing the possibility of a hydrogen-like system in silicon photonics and quantum information devices.
Reflected light is often unwanted, causing interference, and reducing transmitted power. Controlling the non-local response of a material can lead to anti-reflection coatings with impressive properties.
The observation of terahertz nonlinearities in graphene and quantum wells and the emission of terahertz waves from water show that terahertz science is still a fertile area of research that is full of surprises.
This Review describes how non-fullerene electron acceptor materials are bringing improvements in the power conversion efficiency and stability of organic solar cells.
An impedance matching layer that enables perfect transmission of all-angle, broadband white light is proposed. The concept is experimentally demonstrated in the microwave regime.
Femtosecond X-ray Fourier holography imaging with record-high lateral resolution below 20 nm is demonstrated. Phase information is encoded into the interference of the diffraction patterns of a reference particle with a measurement sample.
Green light-emitting diodes with a brightness of 460,000 cd m–2 and a low turn-on voltage of 2.5 V are enabled by the use of a chlorination treatment to provide conductive passivation of the devices.
By combining the sensitivity and high temporal resolution of phase imaging with the specificity and high spatial resolution of fluorescence microscopy, a 4D microscope is demonstrated that visualizes in three dimensions the fast cellular processes in living cells at up to 200 Hz.
An experimental protocol to discern true multi-particle interference is demonstrated in a boson sampling device without dynamic reconfiguration. Statistical features of three-photon interference were evaluated in a seven-mode integrated interferometer.
By using a terahertz free-electron laser, multiphoton transitions between impurity states in p-doped Si are investigated. The two- and three-photon integrated absorption cross-sections are found to be the highest ever reported for a discrete oscillator system.