Pointillist structural color in Pollia fruit
نویسندگان
چکیده
منابع مشابه
Pointillist structural color in Pollia fruit.
Biological communication by means of structural color has existed for at least 500 million years. Structural color is commonly observed in the animal kingdom, but has been little studied in plants. We present a striking example of multilayer-based strong iridescent coloration in plants, in the fruit of Pollia condensata. The color is caused by Bragg reflection of helicoidally stacked cellulose ...
متن کاملHigh levels of reflectivity and pointillist structural color in fish, cephalopods, and beetles.
Vignolini et al. (1) reported the discovery of a multilayer structural reflector in the fruit of the herbaceous perennial Pollia condensata. The structural mechanism is remarkable, with a combination of different cells reflecting left-handed or righthanded circularly polarized light. However, several other significant contributions to the field of structural color deserve to be highlighted alon...
متن کاملReply to Roberts et al . : Re fl ectivity and pointillist structural color on land and in water
Roberts et al. (1) point out the dominance of water creatures when it comes to multilayer interference in nature, both qualitatively and in terms of quantity. This is perhaps unsurprising when we consider that 70% of the earth is covered by water and that marine life has had a considerably longer time frame than terrestrial plants in which to develop and refine optical innovations. In our compa...
متن کاملPointillist Halftoning
We explore an extension of current halftoning algorithms that aims to reproduce pointillism, a style of postimpressionist painting. Halftoning algorithms solve the problem of reproducing an image with many colors on a device with very few colors (usually only two, black and white). Pointillist painters also created images using a very limited number of paint colors. Both halftoning and pointill...
متن کاملDysplastic pointillist nevus.
BACKGROUND Three cases of pointillist nevus, which is a distinctive clinical type of benign melanocytic nevus with variegated pigment, have been described in the literature to date. OBSERVATIONS A 24-year-old man presented with an acquired melanocytic lesion composed of multiple tiny pigmented dots. Dermoscopy revealed multiple brown globules on a reddish skin-colored background, and histolog...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2012
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1210105109