Both classical and quantum waves can form vortices: entities with helical phase fronts and
circulating current densities. These features determine the intrinsic orbital angular …

The recent prediction and subsequent creation of electron vortex beams in a number of
laboratories occurred after almost 20 years had elapsed since the recognition of the physical …

Structured light refers to the generation and application of custom light fields. As the tools
and technology to create and detect structured light have evolved, steadily the applications …

In the past decade, optical orbital angular momentum (OAM) has entered the field of
plasmonics in the form of surface-confined vortices, generating vast interest. Here we give …

Interfacing electrons and light enables ultrafast electron microscopy and quantum control of
electrons, as well as new optical elements for high-sensitivity imaging. Here, we …

The ability to image light elements in soft matter at atomic resolution enables unprecedented
insight into the structure and properties of molecular heterostructures and beam-sensitive …

Spatial modulation of electron beams is an essential tool for various applications such as
nanolithography and imaging, yet its conventional implementations are severely limited and …

Plasmonics, the science and technology of the interaction of light with metallic objects, is
fundamentally changing the way we can detect, generate and manipulate light. Although the …

Electron waves that carry orbital angular momentum (OAM) are characterized by a
quantized and unbounded magnetic dipole moment parallel to their propagation direction …

Free electron beams that carry high values of orbital angular momentum (OAM) possess
large magnetic moments along the propagation direction. This makes them an ideal probe …