cissoid


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cissoid

(ˈsɪsɔɪd)
n
(Mathematics) a geometric curve whose two branches meet in a cusp at the origin and are asymptotic to a line parallel to the y-axis. Its equation is y2(2a – x)=x3 where 2a is the distance between the y-axis and this line
adj
(Mathematics) contained between the concave sides of two intersecting curves. Compare sistroid
[C17: from Greek kissoeidēs, literally: ivy-shaped, from kissos ivy]
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It can be seen from the trends of the international market that foreign automotive semiconductor vendors have set about seeking for long-term partnerships with SiC wafer suppliers; in the Chinese market, the collaborations between the Institute of Electrical Engineering (IEE) of Chinese Academy of Sciences (CAS), Tsinghua University and Belgium's CISSOID in 2019, are a boon for massive application of SiC devices to new energy vehicles.
Along the way the curves known as the conchoid and the cissoid were discovered.
The profile of an old, buttressed eucalypt approaches the curve known as cissoid. The tree is thin-skinned and susceptible to scorching by fire, the greater portion of the trunk decorticating in long, thin flakes or ribbons, which taper in thickness from one-eighth or one-tenth of an inch to nothing where they run off above, while about the base and often on the lower fifth, fourth, or even third part of the trunk the rougher bark persists.
CISSOID introduced a high-temperature silicon carbide high-voltage switch with seamless gate control through a simple logic-level 0/5V.