Crystallographic in a sentence

If there is a crystallographic structure to the target, and especially in semiconductor substrates where the crystal structure is more open, particular crystallographic directions offer much lower stopping than other directions.

Now, the symmetries compatible with translations are defined as "crystallographic", leaving room for other "non-crystallographic" symmetries.

This crystallographic restriction of the infinite families of general point groups results in 32 crystallographic point groups (27 from the 7 infinite series, and 5 of the 7 others).

In this image, different colors represent the crystallographic orientation of micrometer-sized grains making up a material called Yttria Stabilized Zirconia, used in fuel cells and other energy applications.

A few examples of crystallographic defects include vacancy defects (an empty space where an atom should fit), interstitial defects (an extra atom squeezed in where it does not fit), and dislocations (see figure at right).

Although many universities that engage in crystallographic research have their own X-ray producing equipment, synchrotrons are often used as X-ray sources, because of the purer and more complete patterns such sources can generate.

A mineral's hardness is not necessarily constant for all sides, which is a function of its structure; crystallographic weakness renders some directions softer than others.

Anisotropic etching can also refer to certain chemical etchants used to etch a certain material preferentially over certain crystallographic planes (e.

Anisotropic etching Some single crystal materials, such as silicon, will have different etching rates depending on the crystallographic orientation of the substrate.

Cleavage is not a universal property among minerals; for example, quartz, consisting of extensively interconnected silica tetrahedra, does not have a crystallographic weakness which would allow it to cleave.

Crystal Data, Determinative Tables, ACA Monograph No. 5, American Crystallographic Association, 1963 These space groups are truly chiral (they each belong to the 11 enantiomorphous pairs).

Crystallographic defects also affect the tube's electrical properties.

Crystallographic methods now depend on analysis of the diffraction patterns of a sample targeted by a beam of some type.

Crystallographic work has shown that there are no ribosomal proteins close to the reaction site for polypeptide synthesis.

Dyar and Gunter, pp. 69–80 These families can be described by the relative lengths of the three crystallographic axes, and the angles between them; these relationships correspond to the symmetry operations that define the narrower point groups.

Eugene Shoemaker, pioneer impact crater researcher, here at a crystallographic microscope used to examine meteorites In the 1920s, the American geologist Walter H. Bucher studied a number of sites now recognized as impact craters in the USA.

In metallic materials, b is aligned with close-packed crystallographic directions and its magnitude is equivalent to one interatomic spacing.

Many ferroelectrics lose their piezoelectric properties above Tc completely, because their paraelectric phase has centrosymmetric crystallographic structure.

Many structures obtained in private commercial ventures to crystallize medicinally relevant proteins are not deposited in public crystallographic databases.

Point groups The crystallographic point group or crystal class is the mathematical group comprising the symmetry operations that leave at least one point unmoved and that leave the appearance of the crystal structure unchanged.