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etch pit density (EPD) is a measure for the quality of semiconductor wafers. An etch solution is applied on the surface of the wafer where the etch rate
Etch_pit_density
Manufacturing process used to create integrated circuits
semiconductor industry trade association SEMI font for labels on wafers Etch pit density Passivation Planar process Transistor count Photolithography Atomic
Semiconductor device fabrication
Semiconductor_device_fabrication
Topics referred to by the same term
Evansville Police Department (Indiana) Enzyme potentiated desensitization Etch pit density, a measure for the quality of semiconductor wafers Erythrose-4-phosphate
EPD
Very small devices that incorporate moving components
etching a rectangular hole in a (100)-Si wafer results in a pyramid shaped etch pit with 54.7° walls, instead of a hole with curved sidewalls as with isotropic
MEMS
Intaglio printmaking technique
antiquity for decorative purposes. Etched carnelian beads are a type of ancient decorative beads made from carnelian with an etched design in white, which were
Etching
Highly anisotropic etch process
taking place only at the bottom of the etched pits. To etch through a 0.5 mm silicon wafer, for example, 100–1000 etch/deposit steps are needed. The two-phase
Deep_reactive-ion_etching
Linear crystallographic defect or irregularity
the shape of the etch pits associated with the dislocations. If the material is deformed and repeatedly re-etched, a series of etch pits can be produced
Dislocation
Highly corrosive mineral acid
and water" U.S. patent 5,635,463 ISO 14104:2017 – Gears – Surface temper etch inspection after grinding, chemical method. Fischer, A. H.; Jacobson, K.
Nitric_acid
Electronic oscillator circuit
g. the wristwatch tuning fork crystals, low etch channel density is desirable. The etch channel density for swept quartz is about 10–100 and significantly
Crystal_oscillator
Rock that has been eroded by wind-driven sand or ice crystals
(also wind-faceted stone, windkanter) is a rock that has been abraded, pitted, etched, grooved, or polished by wind-driven sand or ice crystals. The word
Ventifact
Chemical compound
and regularly shaped etch pits for uses such as Microelectromechanical systems. It is known to have a higher selectivity to etch highly p-doped silicon
Caesium_hydroxide
Optical microscopy technique
determination of whether a feature is a pit in the substrate material or a blob of foreign material on top. Etched crystalline features gain a particularly
Differential interference contrast microscopy
Differential_interference_contrast_microscopy
Natural material created during volcanic eruptions
(bushings) can burn, etch or crack the insulation irreparably and can result in the disruption of the power supply. Volcanic ash can erode, pit, and scour metallic
Volcanic_ash
Type of rechargeable battery
surface treatments may take various forms: foil, mesh, foam (dealloyed), etched (wholly or selectively), and coated (with various materials) to improve
Lithium-ion_battery
Optical component which splits light into several beams
lowering fabrication costs. Semiconductor technology today is also used to etch holographically patterned gratings into robust materials such as fused silica
Diffraction_grating
Phenomenon in crystallization
visualised the highly local strain concentration at the twin tip using an etch-pit procedure. More recently, high-resolution electron backscatter diffraction
Crystal_twinning
Diamond-like object which is not a diamond
of the stone; they take the form of triangular, rectangular, or square pits (etch marks) and are seen only in diamond. Diamond is an extremely effective
Diamond_simulant
Earliest anatomically modern humans in Europe and West Asia
the radius was modified quite little, with the engraving probably quickly etched on (indicated by scrape marks not recorded on any other Magdalenian engraving)
Cro-Magnon
High-energy particle, mainly originating outside the Solar System
a conical etch pit in the plastic. The etch pits are measured under a high-power microscope (typically 1600× oil-immersion), and the etch rate is plotted
Cosmic_ray
Type of electron microscope
temperature-sensitive materials such as ice and fats. Freeze-fracturing, freeze-etch or freeze-and-break is a preparation method particularly useful for examining
Scanning_electron_microscope
Impact craters in Saudi Arabia
uncovered meteorites. The largest, weighing 2,045 kilograms (4,508 lb), had a pitted, but roughly level, top surface about one metre (3 ft 3 in) in diameter
Wabar_craters
Chemical-induced nickel coating of a surface
suitable reducing agent. [citation needed] Activation is done with a weak acid etch, nickel strike, or a proprietary solution, if the substrate is non-metallic
Electroless nickel-phosphorus plating
Electroless_nickel-phosphorus_plating
Bronze Age civilisation in South Asia
Indus Valley and the Gulf region. If this is accepted, then the presence of etched carnelian beads, a Harappan-style cubical stone weight, and a Harappan-style
Indus_Valley_Civilisation
Map used in orienteering
maps also show forest density, water features, clearings, trails and roads, earthen banks and rock walls, ditches, wells and pits, fences and power lines
Orienteering_map
thermophotovoltaic (TPV) systems. The surface of this material is etched with billions of nanoscale pits, so that it emits wave at the specified wavelengths and
Sun-free_photovoltaics
lateral recording. Berliner's original patent showed a lateral recording etched around the surface of a cylinder, but in practice, he opted for the disc
History_of_sound_recording
Semiconductor memory technology
aims to boost densities, drive lower cost per GB". ExtremeTech. August 6, 2013. Retrieved 4 July 2019. Lammers, David (13 May 2016). "AMD pits MirrorBit against
Charge_trap_flash
Fourth planet from the Sun
February 2021. Retrieved 26 November 2018. Verba C (2 July 2009). "Dust Devil Etch-A-Sketch (ESP_013751_1115)". HiRISE Operations Center. University of Arizona
Mars
Central business district of Ohio, US
demolishing ticket booths. At Settlers Landing, crews will restore eight etched glass panels that act as wind screens. The artwork depicts scenes of Cleveland's
Downtown_Cleveland
Chemical element with atomic number 29 (Cu)
seawater. Most copper is mined or extracted as copper sulfides from large open pit mines in porphyry copper deposits that contain 0.4 to 1.0% copper. Sites
Copper
Physical model of an aircraft for display, research, or amusement
and details must be supplied by the modeller. There is a handful of photo etched metal kits that allow a high level of detail and they are unable to replicate
Model_aircraft
Behavior of Neanderthal people
mammoth tooth with an incision and a fossil nummulite shell with a cross etched in from Tata, Hungary; a large slab with 18 cupstones hollowed out from
Neanderthal_behavior
Optical analog video disc format
record. At a basic level, LaserDiscs used a series of tiny pits and flat areas (called lands) etched into the disc surface. These core technologies would later
LaserDisc
Music genre
phenomenon itself originates by engraving the necessary Ritchriftreihen (etched grooves)." He presents detailed descriptions for manipulating discs, creating
Noise_music
Type of computer disk storage drive
regulate the power of the laser. The irregular orange material is flexible etched copper foil supported by thin sheet plastic; these are "flexible circuits"
Optical_disc_drive
City in Egypt
Retrieved April 3, 2019. Vanhulle, Dorian (10 July 2025). "An early ruler etched in stone? A rock art panel from the west bank of Aswan (Egypt)". Antiquity
Aswan
European mission to study Comet 67P/Churyumov-Gerasimenko (2004–2016)
direct analogy to its namesake, the Rosetta spacecraft also carried a micro-etched pure nickel prototype of the Rosetta disc donated by the Long Now Foundation
Rosetta_(spacecraft)
Organised layer of amphiphilic molecules
thermodynamics of formation, e.g. thiol SAMs on gold typically exhibit etch pits (monatomic vacancy islands) likely due to extraction of adatoms from the
Self-assembled_monolayer
City in County Durham, England
Durham Cathedral and taking its name from a depiction of the city's founding etched in masonry on the south side of the cathedral. The city has been known by
Durham,_England
Biological membrane structure
human red cell membrane. A combined study using phospholipases and freeze-etch electron microscopy". Biochim. Biophys. Acta. 323 (2): 178–93. doi:10
Lipid_bilayer
Municipality in Bohol, Philippines
becoming an independent parish. As to the casa parroquial, the year 1876 is etched over the porta maior. However, in the center of the entrance arches to the
Alburquerque,_Bohol
Extinct genus of marine reptiles
original on October 26, 2019. Grange, D. R.; Storrs, G. W.; Carpenter, S.; Etches, S. (1996). "An important marine vertebrate-bearing locality from the Lower
Pliosaurus
Prefecture-level city in Sichuan, People's Republic of China
bowl of douhua, a dish of dipping sauce, and rice—this is a taste memory etched into the bones of Fushun people. Niufu Roasted Pork Knuckle: A specialty
Zigong
Vertical transport
then one will still stop going up. Direction indicators are sometimes etched with arrows or shaped like arrows and/or use the convention that one that
Elevator
Unincorporated community in Ontario, Canada
Acadia University from 1951 – 1967 Victor Child (1897 – 1960), painter, etcher and newspaper illustrator at the Toronto Telegram Lorne Ferguson (1930 –
Palmerston,_Ontario
while cleaning out the crawlspace, finds the double doors, complete with etched glass. 18–04 "The Nantucket House - 4" October 19, 1996 (1996-10-19) Our
List of This Old House episodes (seasons 11–20)
List_of_This_Old_House_episodes_(seasons_11–20)
City in Illinois, United States
woodwork, century-old chandeliers, parquet floors, floor-to-ceiling windows, etched glass windows and other fine details. Westclox Museum La Salle County Historical
La_Salle,_Illinois
NASA Mars lander (2018–2022)
further 1.6 million names were added in 2017. An electron beam was used to etch letters only 1⁄1000 the width of a human hair (1 μm) onto 8 mm (0.3 in) silicon
InSight
Quarter of the Neukölln borough in Berlin, Germany
Bürgermeister (Senatskanzlei), Berlin 2026. Neukölln was the sixth leg's final pit stop in the 32nd season (2020) of the reality competition TV show The Amazing
Neukölln_(locality)
Town in Greater Manchester, England
"Tordhale Siche descending to Caldebroc, then to the pit near Preste Platteforde and then to another pit, then to the ditch of Roger the Clerk, then to the
Eccles,_Greater_Manchester
Village in Norfolk, England
from mooring ropes belonging to large transport barges can still be seen etched into the wall on the east side of the church. Wiveton was in the national
Wiveton
LGBT-oriented settlement in Canada
where the names of members of the community who have been lost to AIDS are etched into bronze plaques. A memorial candlelight vigil is held each year at the
Church_and_Wellesley
Method of nerve regeneration
until the surface is etched away to a desired roughness as created by pits and protrusions on the nanometer scale. Longer etch times lead to rougher
Nerve_guidance_conduit
Imaging of cultural works
shown through MSI that one of their portraits has an outline of the figure etched in the paint. This is something that was not visible under standard conditions
Cultural_property_imaging
Comune in Lombardy, Italy
to mint their own coinage. The bust of the Lombard king would have been etched on the coins as a symbolic gesture so that those who used the coins, mostly
Pavia
PMC 6712679. PMID 31523492. Mark T. Young; Davide Foffa; Lorna Steel; Steve Etches (2019). "Macroevolutionary trends in the genus Torvoneustes (Crocodylomorpha:
2019 in archosaur paleontology
2019_in_archosaur_paleontology
Archaeological site in Sudan
Incised and Rocked pottery (Phase 2 and 3) Scratched ware, designs were etched onto the surface using a blunt instrument once the surface was dry (Phase
Jebel_Moya
documenting and understanding the enigmatic Nazca Lines, giant geoglyphs etched into the desert. Angkor Wat, Cambodia: Aerial laser scanning (LiDAR) has
Aerial_archaeology
anatomy and affinities of "Semionotus" manselii is published by Ebert & Etches (2025), who transfer this species to the genus Brachyichthys. Ribeiro-Souza
2025_in_paleoichthyology
Deformation mechanism in steel
to the white appearance of the altered microstructure of a polished and etched steel sample in the affected areas. The WEA is formed by amorphisation (phase
White_etching_cracks
Georgian house near Jobstown, County Dublin, Ireland
reviewed the stone in 2014, noting that the letters KC R.I.P. had been etched into it very deeply, presumably as a memorial to a deceased person. A church
Kiltalown_House
Civil parish in Derbyshire, England
including caves with occupational evidence dating from 500000BC such as at Etches near Dowel farm and from 40000BC at Fox Hole. There are several Middle or
Hartington_Middle_Quarter
Historic site in New South Wales, Australia
of stuccoed brick, rendered and painted with imitation stonework courses etched into the render. The roof is galvanised iron sheeting which has replaced
Hambledon_Cottage
ETCH PIT-DENSITY
ETCH PIT-DENSITY
Male
English
English unisex short form of English Patrick and Latin Patricia, PAT means "patrician; of noble birth."
Boy/Male
Dutch
From the osk.
Boy/Male
American, British, Dutch, English, Greek, Latin, Swedish
Follower of Christ; Nickname for Christopher; Frontiersman Kit Carson; Anointed; Christian
Surname or Lastname
English
English : variant of Kedge, a nickname from Middle English kedge ‘brisk’, ‘lively’, a dialect term confined to East Anglia (probably of Old Norse origin).
Surname or Lastname
English, etc.
English, etc. : variant spelling of Cook.
Male
French
Old French name, possibly derived from the word pepin/pipin, PÉPIN means "seed of a fruit."
Male
Polish
Polish form of Roman Latin Vitus, WIT means "life."
Surname or Lastname
English
English : from Middle English pytte, pitte ‘pit’, ‘hollow’, hence a topographic name for someone who lived by a pit or hollow, or a habitational name from a place named with this word, as for example Pitt in Hampshire.
Surname or Lastname
English
English : variant of Peach.Americanized spelling of German Petsch.
Male
Russian
(Тит) Russian form of Roman Latin Titus, TIT means "fire; to burn" or "straining."
Girl/Female
English
From the Old English 'aethel' meaning noble. Also a diminutive of Etheldreda, Ethelinda, and...
Male
English
Pet form of English Christopher, KIT means "Christ-bearer." Compare with another form of Kit.
Boy/Male
Irish
Fire.
Male
Scottish
Pet form of medieval Scottish Kester, KIT means "Christ-bearer." Compare with another form of Kit.
Male
English
Pet form of English Philip, PIP means "lover of horses."
Male
Italian
Italian and Portuguese form of Latin Pius, PIO means "pious."
Boy/Male
British, Dutch, English, Greek
From the Pit
Surname or Lastname
English, Danish, Dutch, etc.
English, Danish, Dutch, etc. : variant of Jan.Chinese : variant of Ren 1.
Boy/Male
British, English
From the Pit
Female
English
Pet form of English Katherine, KIT means "pure." Compare with masculine Kit.
ETCH PIT-DENSITY
ETCH PIT-DENSITY
Girl/Female
Gaelic Irish
Rose.
Boy/Male
Muslim/Islamic
Servent of the merciful
Boy/Male
French
Strong counselor.
Boy/Male
Celtic
Champion.
Boy/Male
Tamil
Attached, Respectful, Thoughtful
Boy/Male
Gujarati, Hindu, Indian, Kannada, Punjabi, Sikh
Friend of Mind; Attractive
Male
Swedish
Swedish variant spelling of Scandinavian Henrik, HENDRICK means "home-ruler."
Girl/Female
Muslim
Young girl
Girl/Female
German
Of the people.
Girl/Female
Hindu, Indian
Smile
ETCH PIT-DENSITY
ETCH PIT-DENSITY
ETCH PIT-DENSITY
ETCH PIT-DENSITY
ETCH PIT-DENSITY
v. t.
To drain; as, to pot sugar, by taking it from the cooler, and placing it in hogsheads, etc., having perforated heads, through which the molasses drains off.
n.
See Pit of the stomach (below).
n.
A large hole in the ground from which material is dug or quarried; as, a stone pit; a gravel pit; or in which material is made by burning; as, a lime pit; a charcoal pit.
v. t.
To subject to etching; to draw upon and bite with acid, as a plate of metal.
n.
The shaft of a coal mine; a coal pit.
n.
A sensation in the skin occasioned (or resembling that occasioned) by the itch eruption; -- called also scabies, psora, etc.
n.
A pit; a pockmark.
v. t.
To bring to accomplishment; to achieve; to make; to perform, with certain objects; as, to fetch a compass; to fetch a leap; to fetch a sigh.
v. t.
To introduce as an antagonist; to set forward for or in a contest; as, to pit one dog against another.
v. t.
To put a bridle upon; to put the bit in the mouth of.
n.
A hangman. See Jack Ketch.
n.
A vat sunk in the ground; as, a tan pit.
v. t.
To sketch; to delineate.
v. i.
To practice etching; to make etchings.
n.
An article of food consisting of paste baked with something in it or under it; as, chicken pie; venison pie; mince pie; apple pie; pumpkin pie.
a. / a. pron.
Every one of the two or more individuals composing a number of objects, considered separately from the rest. It is used either with or without a following noun; as, each of you or each one of you.
v. i.
To bring one's self; to make headway; to veer; as, to fetch about; to fetch to windward.
n.
The endocarp of a drupe, and its contained seed or seeds; a stone; as, a peach pit; a cherry pit, etc.
n.
A pit.
v. t.
To place or put into a pit or hole.