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2017 ; 8
(1
): 1285
Nephropedia Template TP
Yang S
; Sun N
; Stogin BB
; Wang J
; Huang Y
; Wong TS
Nat Commun
2017[Nov]; 8
(1
): 1285
PMID29101358
show ga
Since the early discovery of the antireflection properties of insect compound
eyes, new examples of natural antireflective coatings have been rare. Here, we
report the fabrication and optical characterization of a biologically inspired
antireflective surface that emulates the intricate surface architectures of
leafhopper-produced brochosomes-soccer ball-like microscale granules with
nanoscale indentations. Our method utilizes double-layer colloidal crystal
templates in conjunction with site-specific electrochemical growth to create
these structures, and is compatible with various materials including metals,
metal oxides, and conductive polymers. These brochosome coatings (BCs) can be
designed to exhibit strong omnidirectional antireflective performance of
wavelengths from 250 to 2000?nm, comparable to the state-of-the-art
antireflective coatings. Our results provide evidence for the use of brochosomes
as a camouflage coating against predators of leafhoppers or their eggs. The
discovery of the antireflective function of BCs may find applications in solar
energy harvesting, imaging, and sensing devices.
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