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Repeating unit formed by the vectors spanning the points of a lattice
a unit cell is a repeating unit formed by the vectors spanning the points of a lattice. Despite its suggestive name, the unit cell (unlike a unit vector
Unit_cell
Transmitarrays consist of an array of unit cells placed above a source (feeding) antenna. Phase shifts are applied to the unit cells, between elements on the receive
Transmitarray_antenna
Ordered arrangement of atoms, ions, or molecules in a crystalline material
material that constitutes this repeating pattern is the unit cell of the structure. The unit cell completely reflects the symmetry and structure of the
Crystal_structure
Place in prison housing inmates awaiting execution
the designated "death cell." To accommodate Zangara, the facility expanded the waiting area to include a row of adjacent cells, thus creating what became
Death_row
Multi-core microprocessor microarchitecture
The Cell Broadband Engine (Cell/B.E.) is a 64-bit reduced instruction set computer (RISC) multi-core processor and microarchitecture developed by Sony
Cell_(processor)
One of the 7 crystal systems in crystallography
a} of the primitive cell below equals 1 2 a 2 + b 2 {\displaystyle {\frac {1}{2}}{\sqrt {a^{2}+b^{2}}}} of the conventional cell above. Oblique rhombic
Monoclinic_crystal_system
structure is described by a unit cell repeating periodically over space. There are an infinite number of choices for unit cells, with different shapes and
Supercell_(crystal)
Particular class of intermetallic phases
group with 52 atoms per unit cell. The alloy Cr9Mo21Ni20 is the prototype for the P-phase. It has a primitive orthorhombic cell with 56 atoms. The alloy
Frank–Kasper_phases
Standard unit of mass for atomic-scale entities
number of atoms per unit cell of volume Vcell. The unit cell of silicon has a cubic packing arrangement of 8 atoms, and the unit cell volume may be measured
Dalton_(unit)
Geometry and crystallography point array
multiple of a unit cell.) There are mainly two types of unit cells: primitive unit cells and conventional unit cells. A primitive cell is the very smallest
Bravais_lattice
Topics referred to by the same term
Look up cell in Wiktionary, the free dictionary. Cell most often refers to: Cell (biology), the functional basic unit of life Cellphone, a phone connected
Cell
Beam focusing, typically horn-fed planar array of unit cells
array of unit cells, illuminated by a feeding antenna (source of electromagnetic waves). The feeding antenna is usually a horn. The unit cells are usually
Reflectarray_antenna
Theory that living organisms are made up of cells
structural/organizational unit of all organisms, and that all cells come from pre-existing cells. Cells are the basic unit of structure in all living
Cell_theory
Calcium carbonate mineral
complications, there are also two definitions of unit cell for calcite. One, an older "morphological" unit cell, was inferred by measuring angles between faces
Calcite
Crystallography concept
of particles in the unit cell, Vparticle is the volume of each particle, and Vunit cell is the volume occupied by the unit cell. It can be proven mathematically
Atomic_packing_factor
crystal (periodic) pattern. The selection of an origin and a basis define a unit cell, a parallelotope (i.e., generalization of a parallelogram (2D) or parallelepiped
Fractional_coordinates
Union of crystal groups with related structures and lattices
family, the crystal is conventionally described by a right rhombic prism unit cell with two equal axes (a by a), an included angle of 120° (γ) and a height
Hexagonal_crystal_family
Concept in molecular modelling
approximating a large (infinite) system by using a small part called a unit cell. PBCs are often used in computer simulations and mathematical models.
Periodic_boundary_conditions
Type of crystal structure
two tetrahedrally bonded atoms in each primitive cell, separated by 1/4 of the width of the unit cell in each dimension. The diamond lattice can be viewed
Diamond_cubic
Primitive cell of crystal lattices with Voronoi decomposition applied
symmetry. The Wigner–Seitz cell is a means to achieve this. A Wigner–Seitz cell is an example of a primitive cell, which is a unit cell containing exactly one
Wigner–Seitz_cell
Titanium dioxide mineral
activity. Brookite also has a larger cell volume than either anatase or rutile, with 8 TiO2 groups per unit cell, compared with 4 for anatase and 2 for
Brookite
Designation of positions within a crystallographic space group
tables give the Wyckoff positions for different space groups. Atoms in a unit cell can be described by just their wyckoff position and symmetry operators
Wyckoff_positions
Rare feldspathoid mineral in the sodalite group
of the isometric system, 43m, space group P43n. It has one formula unit per unit cell (Z = 1), which is a cube with side length of 9 Å. More accurate measurements
Hauyne
Basic unit of life forms
The cell is the basic structural and functional unit of all forms of life or organisms. The term comes from the Latin word cellula meaning 'small room'
Cell_(biology)
Computation method named after Paul Peter Ewald
unit of this hypothetical periodic system is called a unit cell. One such cell is chosen as the "central cell" for reference and the remaining cells are
Ewald_summation
Crystallographic system where the unit cell is in the shape of a cube
the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest
Cubic_crystal_system
Parameter in microbiology
In microbiology, a colony-forming unit (CFU, cfu or Cfu) is a unit which estimates the number of microbial cells (bacteria, fungi, viruses etc.) in a sample
Colony-forming_unit
Zeolite mineral
four formula units per unit cell (Z = 4). Described in this way, various sources give the following values for the parameters of the unit cell, which has
Scolecite
Blue tectosilicate mineral
anions instead.) This framework forms a zeolite cage structure. Each unit cell has two cavities, which have almost the same structure as the borate cage
Sodalite
Empty space between atoms in a crystal lattice
arrange them, you will have empty space in between. The same is true in a unit cell; no matter how the atoms are arranged, there will be interstitial sites
Interstitial_site
Chemical element with atomic number 25 (Mn)
elemental metals in that it has a very complex unit cell, with 58 atoms per cell (29 atoms per primitive unit cell) with manganese atoms in four different types
Manganese
Tectosilicate mineral of the zeolite group
formula unit per unit cell (Z = 1), or as a larger pseudo-orthorhombic cell with β close to 90° and Z = 2. Cell Parameters for the monoclinic cell: a = 13
Stilbite
Physical dimensions of unit cells in a crystal
the physical dimensions and angles that determine the geometry of the unit cells in a crystal lattice, and is proportional to the distance between atoms
Lattice_constant
Materials made only out of carbon
structure of diamond is a face-centered cubic lattice having eight atoms per unit cell to form a diamond cubic structure. Each carbon atom is covalently bonded
Allotropes_of_carbon
Synthetic pigment
a face centered cubic lattice structure, with four iron(III) ions per unit cell. "Soluble" PB crystals contain interstitial K+ ions; insoluble PB has
Prussian_blue
determine the atomic structure of a crystalline material and to refine the unit cell and has the added advantage of checking phase-purity. Generally, the intensities
Le_Bail_method
Branch of biology that studies cells
organisms are made of cells. A cell is the basic unit of life that is responsible for the living and functioning of an organism. Cell biology encompasses
Cell_biology
Landmark building in Brussels, Belgium
(59 ft), stainless-steel-clad spheres are connected in the shape of a unit cell that could represent an iron crystal (BCC crystal structure) magnified
Atomium
Iron ore mineral
with Fe2+ cations, occupy octahedral sites. The unit cell consists of thirty-two O2- ions and unit cell length is a = 0.839 nm. As a member of the inverse
Magnetite
Solid form of the 7th element
group Pa3; the N2 molecules are located on the body diagonals of the unit cell cube. At low temperatures the α-phase can be compressed to 3500 atm before
Solid_nitrogen
Lattice point group
is equivalent to the body-centered tetragonal lattice with a smaller unit cell. The point groups that fall under this crystal system are listed below
Tetragonal_crystal_system
Type of high-temperature superconductor
squares of O2− ions with a Cu2+ ion at the centre of each square. The unit cell is rotated by 45° from these squares. Chemical formulae of superconducting
Cuprate_superconductor
Radius of an atomic ion in crystals
unit cell of a crystal. For example, the length of each edge of the unit cell of sodium chloride is found to be 564.02 pm. Each edge of the unit cell
Ionic_radius
Iron (II) disulfide mineral
{\displaystyle a} of stoichiometric iron pyrite FeS2 amounts to 541.87 pm. The unit cell is composed of a Fe face-centered cubic sublattice into which the S 2
Pyrite
Chemical compounds known for exhibiting high temperature superconductivity
molar ratio is 1 to 2 to 3 for yttrium, barium, and copper and it has a unit cell consisting of subunits, which is the typical structure of perovskites
Rare-earth barium copper oxide
Rare-earth_barium_copper_oxide
Silica mineral, polymorph of quartz
parameter is shorter by approximately the square root of 2, so the α unit cell contains only 4 silicon atoms rather than 8.) The choice of axis is arbitrary
Cristobalite
Naturally occurring mineral form of calcium apatite
Ca5(PO4)3(OH), often written Ca10(PO4)6(OH)2 to denote that the crystal unit cell comprises two entities. It is the hydroxyl endmember of the complex apatite
Hydroxyapatite
Conversion constant for amount of substance
similarly relationship between the volume of a crystal to that of its unit cell. The Avogadro constant was historically derived from the old definition
Avogadro_constant
Women's prison in Gatesville, Texas, U.S.
O'Daniel Unit houses the state's female death row inmates. Death row offenders are housed separately from the rest of the prisoners in single-person cells measuring
Patrick_O'Daniel_Unit
Hexagonal lattice allotrope of carbon
manufactured in the lab, lonsdaleite has a hexagonal unit cell, related to the diamond unit cell in the same way that the hexagonal and cubic close packed
Lonsdaleite
Type of material
with a 2-atom unit cell, as found in e.g. chromium, iron, and tungsten Face-centered cubic crystal structure, with a 4-atom unit cell, as found in e
Metal
Alloy of iron and nickel found in meteorites
causes taenite to have a face-centered unit cell, whereas kamacite's higher iron content causes its unit cell to be body centered. This difference is
Kamacite
Technique for the characterisation of crystalline materials
initial approximation of many free parameters, including peak shape, unit cell dimensions and coordinates of all atoms in the crystal structure. Other
Rietveld_refinement
Effect in surface physics
In this notation, the surface unit cell is given as multiples of the nonreconstructed surface unit cell with the unit cell vectors a and b. For example
Surface_reconstruction
Fe(II) phosphate mineral
2/m, space group C 2/m, with two formula units per unit cell (Z = 2). The approximate values of the unit cell parameters are: a = 10.1 Å, b = 13.4 Å, c
Vivianite
Copper iron sulfide mineral
(sphalerite). The unit cell is twice as large, reflecting an alternation of Cu+ and Fe3+ ions replacing Zn2+ ions in adjacent cells. In contrast to the
Chalcopyrite
Technique used for determining crystal structures and identifying mineral compounds
three-dimensional array (a Bravais lattice) of atoms and molecules; a single unit cell is repeated indefinitely along three principal directions. In the 19th
X-ray_crystallography
unit cell or representative volume element (RVE), which consists of all three constituents. With periodical boundary conditions applied, a unit cell is
Micro-mechanics_of_failure
Rare carbonate mineral and raw material for the extraction of strontium
dipyramid. The space group is Pmcn. There are four formula units per unit cell (Z = 4) and the unit cell parameters are a = 5.1 Å, b = 8.4 Å, c = 6.0 Å. Strontianite
Strontianite
Natural mineral form of lead sulfide
Divalent lead (Pb) cations and sulfur (S) anions form a close-packed cubic unit cell much like the mineral halite of the halide mineral group. Zinc, cadmium
Galena
Mineral
Sykesville. Space group: Fd3m. Unit cell parameters = a = 9.48 Å, Z = 8. Unit cell volume: V = 851.97 Å3 (calculated from unit cell parameters). The linnaeite
Carrollite
Volume occupied by one mole of a substance
can be measured by X-ray crystallography. The unit cell volume (Vcell) may be calculated from the unit cell parameters, whose determination is the first
Molar_volume
Chemical formula of a unit of an ionic compound or covalent network solid
the formula unit is used. The number of formula units (Z) and the dimensions of the crystallographic axes are used in defining the unit cell. Peter Atkins
Formula_unit
Alunite supergroup, phosphate mineral
R3m. The reported lattice parameters (the lengths of the sides of the unit cell) vary in detail according to the source, but all agree that normal plumbogummite
Plumbogummite
Solid material with highly ordered microscopic structure
characterized by its unit cell, a small imaginary box containing one or more atoms in a specific spatial arrangement. The unit cells are stacked in three-dimensional
Crystal
A fuel cell auxiliary power unit (FC-APU) is a fuel cell based auxiliary power unit on a vehicle that provides energy for functions other than propulsion
Fuel cell auxiliary power unit
Fuel_cell_auxiliary_power_unit
Rare secondary copper arsenate mineral
unit cell with three formula units per cell (Z = 3), and some a smaller unit cell with only 1.5 formula units per cell (Z = 1.5). For the larger unit
Chalcophyllite
2-dimensional lattice
by a centered rhombic unit cell, while the centered rectangular lattice can also be described by a primitive rhombic unit cell. Note that the length a
Rectangular_lattice
Mathematical operation
closely related to the problem in crystallography of finding a unique unit cell. Historically reduction theory was first studied by Lagrange (1773) and
Lattice_reduction
sequence of those configurations defines the crystal structure, where the unit cell is the shortest periodically repeated sequence of the stacking sequence
Polymorphs_of_silicon_carbide
Copper sulfide mineral
large unit cell containing 248 copper and 128 sulfur atoms. The formula is Cu31S16, molar mass 2483 g, and there are 8 formula units per unit cell (Z =
Djurleite
Periodic minimal surface
to the surface. Hence given a suitable initial polygon inscribed in a unit cell periodic surfaces can be constructed. The Schwarz surfaces have topological
Schwarz_minimal_surface
Notation system for crystal lattice planes
a1, a2, and a3 that define the unit cell (note that the conventional unit cell may be larger than the primitive cell of the Bravais lattice, as the examples
Miller_index
Type of three-dimensional crystal structural geometry
a} of the primitive cell below equals 1 2 a 2 + b 2 {\displaystyle {\frac {1}{2}}{\sqrt {a^{2}+b^{2}}}} of the conventional cell above. Right rhombic
Orthorhombic_crystal_system
Apatite supergroup, vanadate mineral
unit cell of vanadinite, the smallest divisible unit that possesses the same symmetry and properties, is in the form of a hexagonal prism. The unit cell
Vanadinite
Crystalline solid containing molecules caged in a lattice of frozen water
observed (Type H). The unit cell of Type I consists of 46 water molecules, forming two types of cages – small and large. The unit cell contains two small
Clathrate_hydrate
Chemical compound
1970, BAM has an orthorhombic structure with four icosahedral B12 units per unit cell. This ultrahard material has a coefficient of thermal expansion comparable
Aluminium_magnesium_boride
Signal strength received by a phone from a network
temporary dead zones, a cell on wheels may be brought in until the local telecom infrastructure can be restored. These portable units are also used where
Mobile_phone_signal
Hydrothermal mineral
double carbonates. The number of formula units, Z, in the triclinic unit cell is given as 10 or 12, and the unit cell parameters are a = 17.38 Å, b = 14.40
Alstonite
Rare hydrated copper sulfate mineral
so the unit cell is almost brick-shaped (as for the orthorhombic system). Different sources give slightly different values for the unit cell parameters
Langite
Open-source Java viewer for 3D chemical structures
of quartz crystal structure, filling 2×2×2 unit cells. The unit cell boundbox is drawn and the unit cell data are shown on upper left. Cartoon p-orbitals
Jmol
Fourier transform of a real-space lattice, important in solid-state physics
unit cell. Locate a primitive unit cell of the FCC; i.e., a unit cell with one lattice point. Now take one of the vertices of the primitive unit cell
Reciprocal_lattice
Means of describing a crystal structure
the Pearson symbol gives the number of the atoms in the conventional unit cell (atoms which satisfy 1 > x , y , z ≥ 0 {\displaystyle 1>x,y,z\geq 0} for
Pearson_symbol
Class of chemical compounds
intermetallic compounds characterized by the following structural features: large unit cells, comprising some tens up to thousands of atoms, the presence of well-defined
Complex_metallic_alloy
Chemical compound
formulas per unit cell. δ-Bi2O3 has a defective fluorite-type crystal structure in which two of the eight oxygen sites in the unit cell are vacant. The
Bismuth(III)_oxide
SI derived unit of voltage
ratio because the cgs unit of voltage is inconveniently small and one volt in this definition is approximately the emf of a Daniell cell, the standard source
Volt
Uncommon arsenate mineral
describe the lavendulan unit cell as an orthorhombic cell containing 8 formula units (Z = 8) but Mindat.org describes a monoclinic unit cell with the length of
Lavendulan
Simple model of topological insulator
per unit cell, A and B, which correspond to a single electron per unit cell. In this configuration each electron can either hop inside the unit cell or
Su–Schrieffer–Heeger_model
Military unit
Red Cell, formally designated as OP-06D, was a classified United States Navy (USN) military unit designed to test the security of USN facilities. Created
Red_Cell
Calcium-containing amphibole and member of the hornblende group
point group 2/m, space group C2/m. It has two formula units per unit cell (Z = 2). The unit cell parameters both for natural and for synthetic material
Magnesiohastingsite
Silicate mineral
sodium, Na, atoms. The unit cell parameters are a = 11 Å, b = 10 Å, c = 8.5 Å and β = 100°, with 4 formula units per unit cell (Z = 4). More accurate
Vlasovite
Nesosilicate mineral
order of abundance, though Mg2+ always predominates. Space group: P21/b Unit cell parameters: Synthetic F end member a = 7.80 Å, b = 4.75 Å, c = 10.27 Å
Chondrodite
Symmetry group of a configuration in space
The number of replicates of the asymmetric unit in a unit cell is thus the number of lattice points in the cell times the order of the point group. This
Space_group
Term used in composite materials theory
volume (REV) (also called the representative volume element (RVE) or the unit cell) is the smallest volume over which a measurement can be made that will
Representative elementary volume
Representative_elementary_volume
Material with a negative refractive index
called unit cells, which are usually significantly smaller than the wavelength of the externally applied electromagnetic radiation. The unit cells of the
Negative-index_metamaterial
Simplified model in condensed matter physics
criteria for conductors, such as having an odd number of electrons per unit cell. The model was originally proposed in 1963 to describe electrons in solids
Hubbard_model
Rare inosilicate mineral
monoclinic 2/m with space group P21/m. The monoclinic unit cell has two formula units per cell (Z = 2) and side lengths a = 7.126 Å, b = 24.913 Å and
Yuksporite
Classification of a two-dimensional repetitive pattern
lattice itself. In the 5 cases of rotational symmetry of order 3 or 6, the unit cell consists of two equilateral triangles (hexagonal lattice, itself p6m)
Wallpaper_group
Stealth video game series
franchises. The series had sold 19 million units by 2008 and 32 million by 2016. Tom Clancy's Splinter Cell was developed over a period of two years and
Tom_Clancy's_Splinter_Cell
Sulfide mineral
temperatures above 228 °C (442 °F), the structure is isometric with a unit cell that is about 5.50 Å on an edge. This structure is based on cubic close-packed
Bornite
UNIT CELL
UNIT CELL
Girl/Female
American, British, English, Irish
Fair
Female
Welsh
Variant spelling of Welsh Enid, ENIT means "soul."
Boy/Male
Muslim
Unit of army
Male
English
Variant spelling of English Unni, UNI means "afflicted, depressed."
Boy/Male
Indian
Who Won Every Time
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Punjabi, Telugu
Holy; Untouched; Good; Pure
Boy/Male
Hindu
Knower of virtues, Talented, Excellent, Virtuous
Girl/Female
Hebrew
Light.
Boy/Male
Indian
Progress
Boy/Male
Muslim/Islamic
Unit of army
Female
Egyptian
, Anahita ("pure, spotless").
Boy/Male
Bengali, English, Hindu, Indian
Dark Blue
Female
English
English name derived from the vocabulary word, UNITY means "oneness, unity."
Girl/Female
Irish English
Together.
Boy/Male
Hindu
Pure or holy
Female
Hebrew
(×וּרִית) Hebrew name URIT means "fire, light."
Boy/Male
Indian
Unit of army
Boy/Male
Celebrity, Gujarati, Hindu, Indian, Jain, Kannada, Malayalam, Marathi, Punjabi, Sanskrit, Sikh, Tamil, Telugu
Grown; Awakened; Shining
Girl/Female
Hebrew
Graceful.
Boy/Male
Hindu
Joyful unending, Calmness
UNIT CELL
UNIT CELL
Girl/Female
Indian
Result of deeds, Way
Boy/Male
Australian, French, German, Irish
A Patrician; Noble Woman
Girl/Female
Gujarati, Hindu, Indian
Goddess
Boy/Male
Hindu, Indian, Punjabi, Sikh
Amazing; God; Anup
Boy/Male
Hindu
Ascetic
Girl/Female
Muslim
Young pigeon
Girl/Female
Indian
Precious thing, Gem, Princess, Refined, Pure, Exquisite
Boy/Male
Indian
Sweet
Boy/Male
Hindu, Indian, Marathi
Virtuous
Boy/Male
Muslim
Intelligent
UNIT CELL
UNIT CELL
UNIT CELL
UNIT CELL
UNIT CELL
v. t.
To remove the turns of (a rope or cable) from the bits; as, to unbit a cable.
n.
Concord; harmony; conjunction; agreement; uniformity; as, a unity of proofs; unity of doctrine.
n.
A single thing, as a magnitude or number, regarded as an undivided whole.
v. t.
United; joint; as, unite consent.
v. t.
To put together so as to make one; to join, as two or more constituents, to form a whole; to combine; to connect; to join; to cause to adhere; as, to unite bricks by mortar; to unite iron bars by welding; to unite two armies.
v. t.
To unite closely; to knit together.
v. t.
To knit together; to unite closely; to intertwine.
n.
Any one of numerous species of fresh-water mussels belonging to Unio and many allied genera.
v. i.
To be united closely; to grow together; as, broken bones will in time knit and become sound.
n.
The number greater by a unit than two; three units or objects.
v. t.
To form, as a textile fabric, by the interlacing of yarn or thread in a series of connected loops, by means of needles, either by hand or by machinery; as, to knit stockings.
n.
Any definite quantity, or aggregate of quantities or magnitudes taken as one, or for which 1 is made to stand in calculation; thus, in a table of natural sines, the radius of the circle is regarded as unity.
v. t.
To knit or bind together; to unite closely.
imp. & p. p.
of Knit
a.
Of or pertaining to a unit or units; relating to unity; as, the unitary method in arithmetic.
v. t.
To unite.
n.
The number greater by a unit than seven; eight units or objects.
v. t.
To unite closely; to connect; to engage; as, hearts knit together in love.
n.
The number greater than eight by a unit; nine units or objects.
n.
The number greater by a unit than seventeen; eighteen units or objects.