The counterfeiting of goods is growing worldwide, affecting practically any marketable item
ranging from consumer goods to human health. Anticounterfeiting is essential for …

The counterfeiting of goods has important economic implications and is also a threat to
health and security. Incorporating anti-counterfeiting tags with physical unclonable functions …

An ideal anti-counterfeiting technique has to be inexpensive, mass-producible,
nondestructive, unclonable and convenient for authentication. Although many anti …

Liquid crystals (LCs) are omnipresent in living matter, whose chirality is an elegant and
distinct feature in certain plant tissues, the cuticles of crabs, beetles, arthropods, and …

Supramolecular and macromolecular functional helical superstructures are ubiquitous in
nature and display an impressive catalog of intriguing and elegant properties and …

Modern optics and photonics constantly require break‐through materials and designs in
order to achieve miniature, lightweight, highly tunable, and effective optical devices. One of …

The extraordinary responsiveness and large diversity of self-assembled structures of liquid
crystals are well documented and they have been extensively used in devices like displays …

Hierarchical, structurally colored materials offer a wide variety of visual effects that cannot be
achieved with standard pigments or dyes. However, their fabrication requires simultaneous …

Secure data encryption relies heavily on one-way functions, and copy protection relies on
features that are difficult to reproduce. We present an optical authentication system based on …

Multiple-emulsion drops serve as versatile templates to design functional microcapsules due
to their core–shell geometry and multiple compartments. Microfluidics has been used for the …