Detailed Notes on Crystal

Detailed Notes on Crystal

Blog Article

天然的水晶一般都会有絮状（绵绺），也就是大家俗称的瑕疵，这是液体水落石出和二氧化碳的小孔穴，而人工合成的水晶就不会有这样的特征。

①压电效�?在机械力(压力或拉�?作用下，水晶单晶体的两端会产生电荷，其电量相等但符号相反。在工业上，无色、无缺陷、不具双晶的水晶常被用来作压电石英片。

These innovations involve exotic structures with programmable lattice symmetries and effectively-outlined crystal patterns, responsive elements that leverage the intrinsic Houses of nucleic acids to control buildings on need, nanoparticle superlattices developed epitaxially from surfaces and colloidal crystals which offer insights into light-weight–make a difference interactions. Looking ahead, we obstacle the Group to leverage the remarkable structural control afforded by crystal engineering with DNA to synthesize courses of useful products that thrust further than what has long been achievable with In a natural way developing crystalline supplies or All those produced by more conventional approaches.

Fig. seven: A template-directed technique can Handle The location of developing blocks over a floor within the development of elaborate constructions.

You will also find a lot of components that resemble crystals but are literally polycrystals. Polycrystals type when microscopic crystals fuse with each other to type a sound. These materials will not include ordered lattices.

Lattices can have one particular lattice place for every here cell or more than one, yielding a complete of fourteen Bravais crystal lattice styles. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the three-dimensional array created by a list of discrete points.

Springer Nature remains neutral regarding jurisdictional claims in revealed maps and institutional affiliations.

1A crystal chandelier lit the room.一盏水晶吊灯照亮了房间。《柯林斯英汉双解大词典》

包裹体常见有固相、固液气三相组合、空洞以及双晶、色带等。水晶中典型的同生包裹体有自形的锐钛矿、气液两相包体等。

颜色：无色，浅至深的紫色，浅黄、中至深黄色，浅至深褐、棕色，绿至黄绿色，浅至中粉红。

用手去触摸水晶，天然水晶通常温度要比人造水晶的要凉的多；用眼观察，天然水晶通常有棉絮状的包裹体，这个是人造水晶所没有的。

Crystal Lattices You will find seven systems of crystal buildings, that are also called lattices or Area lattices:

压电性：水晶晶体受到压力时会产生电荷；反之，受到电压作用时，晶体会产生频率很高的振动。水晶具有可使压力与电荷相互转移的性能，称压电性。

A further type of crystalline carbon is predicated on a molecule with 60 carbon atoms known as buckminsterfullerene (C60). The molecular form is spherical. Each carbon is bonded to a few neighbours, as in graphite, and the spherical shape is reached by a combination of 12 rings with five sides and 20 rings with six sides. Very similar structures have been initially visualized via the American architect R. Buckminster Fuller for geodesic domes.