Amorphous solid - Amorphous

Japanese: 非晶質固体 - ひしょうしつこたい(英語表記)amorphous
Amorphous solid - Amorphous
In a crystal, atoms (or molecules) are arranged in a regular, periodic pattern (translational symmetry). In contrast, a solid in which the arrangement or connections of atoms are significantly disordered is called a non-crystalline or amorphous solid. This state is also called an amorphous state. An example of an amorphous solid that is familiar to us is silica glass (SiO 2 ), which is used in windows and tableware. The situation is the same as in crystalline SiO 2 (quartz), in that the Si atoms have four bonds connecting them to O atoms, and the O atoms have two bonds connecting them to Si atoms, but in silica glass the overall network of connections is significantly disordered and non-regular.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
結晶の中では原子(または分子)は周期的に規則正しく(並進対称性)並んでいる。これに対して,原子の配置あるいは原子のつながりが大きく乱れた固体を,非晶質固体あるいはアモルファス固体という。またこのような状態を無定形状態という。われわれの身近にある非晶質固体の例は,窓や食器に使われているシリカガラス(SiO2)である。Si原子から結合の手が4本出てO原子とつながり,O原子は結合の手を2本もってSi原子とつながっているという事情は結晶SiO2(水晶)と変わらないが,全体としてのつながりの網目が大きく乱れて規則性がないのがシリカガラスである。

出典 株式会社平凡社世界大百科事典 第2版について 情報

<<:  Microcirculation - Bisho Junkan

>>:  Amorphous metals - amorphous metals

Recommend

Stem

In vascular plants, the vegetative organ that, to...

Amagi Kyuuboku

...Strawberry cultivation in rice paddies in nort...

Arabia Taro - Let's play Arabia Taro

...It began in 1957 when Yamashita Taro (1889-196...

Citronella

...The leaves are also used to flavor soups and c...

Kyoto

〘noun〙① The direction of the capital. The directio...

Diplazium tomitaroanum (English spelling) Diplaziumtomitaroanum

…[Masahiro Kato]. . . *Some of the terminology th...

Thérémine, L. (English spelling) Theremine L

…A type of electric musical instrument that uses ...

Masayasu Shiroma - Gusukuma Seian

Year of death: August 1944 Year of birth: 19 Augus...

brain vesicle

…the olfactory system is associated with the fore...

Three professions - Sanshoku

The central organization of the Restoration gover...

Mixed rice - Mixed rice

...When the bulking agent of kojimeshi is qualita...

Worshipping from all four directions

〘Noun〙 (In early modern times, it was also called ...

Shigeyoshi Mori

His birth and death years are unknown. He was a J...

Hatsukaichi [city] - Hatsukaichi

A city located in the southwest of Hiroshima Prefe...

Temperature wind - Ondofu

It is the vector difference of the geostrophic wi...