They also built two control structures: a unidirectional, meaning the layers were placed directly on top and parallel to each other, and a quasi-isotropic, the standard used in the aerospace industry, which has
alternating layers stacked upon each other in an orientation of 0 degrees (first layer), -45 degrees (second layer), +45 degrees (third layer), 90 degrees (fourth layer) and so on.
Not exact matches
Place a pea - sized dollop of cashew spread in the center of the base and
stack vegetables,
alternating each
layer with cashew spread.
The design consists of only four
alternate layers of zirconium oxide and silicon dioxide and the whole
stack is less than 300 nanometres thick.
Using a
stack of about 80
alternating layers of precise thickness, Shen says, «We are able to reflect light at most of the angles, over a very broad band [of colors]: the entire visible range of frequencies.»
The new structure consists of a
stack of ultrathin
layers of two
alternating materials where the thickness of each
layer is precisely controlled.
The team also demonstrated their films» efficacy when
stacked layer by
layer alternating with silicon dioxide and employing standard photolithography.
CLT panels consist of several
layers of kiln - dried lumber boards
stacked in
alternating directions, bonded with structural adhesives, and pressed to form a solid, straight, rectangular panel.