A fundamental question regarding light scattering is how whiteness, generated from multiple
scattering, can be obtained from thin layers of materials. This challenge arises from the …

Organic crystals are widely used by animals to manipulate light for producing structural
colors and for improving vision. To date only seven crystal types are known to be used, and …

Highly reflective crystals of small organic molecules are the functional materials in a wide
variety of optical systems in animals. We present a perspective on this field of organic …

Numerous bio‐organisms employ template‐assisted crystallization of molecular solids to
yield crystal morphologies with unique optical properties that are difficult to reproduce …

Spectacular natural optical phenomena are produced by highly reflective assemblies of
organic crystals. Here we show how the tapetum reflector in a shrimp eye is constructed from …

Biomimetic synthesis of guanine crystals has been focused on in the last years. However,
multi‐functional guanine crystals occluded with fluorescent molecules have not been …

Biomineralization is an important strategy for constructing mineral materials with excellent
structure and properties. Organic biominerals exquisitely manipulate light, whereas …

Biogenic twinning β-phase anhydrous guanine nanoplatelets are utilized as optical
materials in organisms. However, it is still a puzzle how to produce crystalline guanine …

Crystalline riboflavin (vitamin B2) performs an important biological role as an optically
functional material in the tapetum lucidum of certain animals, notably lemurs and cats. The …

Optical bound states in the continuum (BICs) have recently attracted a great deal of attention
as an efficient way to localize and manipulate light at nanoscale. Traditionally, generation of …