All articles starting with I
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Ion trap
An ion trap is a device that holds charged particles in place using electric and magnetic fields, most often as a Penning trap or a Paul trap.
Ion trap mass spectrometry
Ion trap mass spectrometry (IT-MS) is a mass spectrometry technique that stores ions in a radiofrequency quadrupole field, performing tandem MS in time up to MS10.
Ion trapping
Ion trapping is the accumulation of residual-gas ions in the negative potential of an electron beam, causing tune shifts, emittance growth, and beam instabilities in storage rings.
Ion-beam lithography
Ion-beam lithography (IBL) is a nanofabrication technique that patterns nanoscale structures by directing focused or projected beams of energetic ions onto a resist or substrate, achieving sub-10 nm resolution.
Ion-beam sputter deposition
Ion-beam sputter deposition (IBSD) is a physical vapor deposition technique in which a beam of ions bombards a target, ejecting atoms that condense on a substrate as a thin film.
Ion-exchange membrane
An ion-exchange membrane is a dense, charged polymeric membrane that selectively passes oppositely charged ions by Donnan exclusion, used in electrodialysis, fuel cells, redox flow batteries, and water electrolysis.
Ion-exchange resin
An ion-exchange resin, also called an ion-exchange polymer, is an insoluble cross-linked polymer bead that reversibly exchanges ions with solution, used in water softening and demineralization.
Ion-gated superconductivity in 2D materials
Ion-gated superconductivity in 2D materials is the voltage-tuned induction of superconductivity in atomically thin crystals using an electrolyte gate, first demonstrated in MoS₂ by University of Tokyo researchers in 2012.
Ion-pair chromatography
Ion-pair chromatography is a liquid chromatography technique that adds a charged reagent to the mobile phase to retain ionic and strongly polar compounds on a reversed-phase column.
Ion-photon entanglement
Ion-photon entanglement is entanglement between a trapped atomic ion qubit and a single photon it emits, which carries the ion's quantum information through fiber as a flying qubit.
Ion-selective electrode
An ion-selective electrode (ISE) is an electrochemical sensor with a selective membrane whose potential, read against a reference electrode and calibrated, gives the activity of a chosen ion in solution.
Ion-translocating oxidoreductase complex, subunit RnfA/RsxA
RnfA/RsxA is a six-helix inner membrane subunit of the bacterial Rnf electron transport complex; with its inverted-topology paralog RnfE/RsxE it forms the AE1-cluster-gated Na+ pumping dimer, serving nitrogen fixation or SoxR reduction.
Ion-translocating oxidoreductase complex, subunit RnfC/RsxC
RnfC/RsxC is the peripheral NADH-binding subunit of the bacterial Rnf ion-translocating ferredoxin:NAD+ oxidoreductase, carrying one FMN and two [4Fe-4S] clusters; its E. coli homolog RsxC reduces the SoxR stress sensor.
Iona
Iona, a small Inner Hebrides island off Mull, Scotland, site of the monastery founded by St Columba in AD 563, birthplace of Scottish Christianity, later a Benedictine abbey, burial place of early Scottish kings, and home of the Iona Community.
Iona Gaels men's basketball
Iona Gaels men's basketball: Iona University's NCAA Division I team in New Rochelle, New York, in the MAAC. Leads the MAAC with 14 tournament titles and 21 appearances; 16 NCAA bids, 1-16; coached since 2025 by Dan Geriot.
Iona Yakir
Iona Yakir (Иона Эммануилович Якир) was a Soviet Red Army commander of the Kiev Military District, executed in 1937 in the Tukhachevsky case and rehabilitated in 1957.
Ioncell-F
Ioncell-F is a Lyocell-type fiber spinning process developed at Aalto University and the University of Helsinki that turns wood pulp and textile waste into strong cellulosic fibers.
iOnctura
iOnctura is a Geneva and Amsterdam biopharmaceutical company founded in 2017 as a spin-out from Merck Healthcare R&D, developing oral small-molecule therapies for hard-to-treat cancers.
Ione Skye
Ione Skye (Ione Skye Leitch, born 1970, London) is a British-born American actress, painter, and author, known for Diane Court in Say Anything... (1989), River's Edge, Gas Food Lodging, Zodiac, her 2025 memoir Say Everything, and the Weirder Together podcast with Ben Lee.
ioneer
Ioneer is a mining developer whose flagship Rhyolite Ridge project in Nevada is designed to co-produce lithium carbonate and boric acid from a single deposit.
Ionia (Ἰωνία)
Ionia (Ἰωνία), ancient Greek region on the west coast of Asia Minor between Aeolia, Lydia, and Caria; twelve cities including Miletus and Ephesus, the Panionion league, the Ionian Revolt of 499-493 BCE, and the Pre-Socratic philosophers.
Ionian and Carian mercenaries in Egypt under Psamtik I
Ionian and Carian mercenaries in Egypt under Psamtik I were Greek and Carian soldiers who helped him win his throne and were settled at the Camps near Bubastis.
Ionian Basin
The Ionian Basin is the deep abyssal basin underlying the Ionian Sea between southern Italy, Libya, and western Greece, the deepest regional sea of the Mediterranean.
Ionian Drainages
Ionian Drainages (FEOW ecoregion 421): temperate coastal river ecoregion along western Greece, from the Thyamis and Corfu to the Peloponnese; highest fish endemism in Europe (59%), with endemic genera Tropidophoxinellus and Economidichthys.
Ionian Islands
Ionian Islands (Heptanese): Greek island group off the country's west coast in the Ionian Sea, 2,300 km², about 210,000 people. Ruled by Venice, France, and Britain (United States of the Ionian Islands) before union with Greece in 1864.
Ionian Mons
Ionian Mons, a mountain (mons) on Jupiter's moon Io, IAU-approved 1997, feature ID 2707, centered near 8.6°N 236.6°W, diameter about 159 km, height 12.7 km, named for the sea Io crossed in Greek myth.
Ionian Revolt
The Ionian Revolt (شورش ایونیا) was the unsuccessful uprising of the Greek cities of Asia Minor against Achaemenid Persian rule from 499 to 493 BC, led by Aristagoras of Miletus.
Ionian Sea (Ιόνιο Πέλαγος)
The Ionian Sea (Ιόνιο Πέλαγος), between Italy and western Greece, is the Mediterranean's deepest sub-basin (5,121 m), key to basin ventilation, rated 'poor' in 2022 environmental status, with a planned 14,000 km2 Greek marine park.
Ionians
Ionians (Ἴωνες): one of the principal Greek ethnic divisions, settled in Attica, Euboea, the Cyclades, and the central west Anatolian coast; Miletus led Ionia, and the Ionian Revolt of 499-493 BCE against Persia triggered the Persian Wars.
Ionic (mobile app framework)
Ionic, also known as Ionic Framework, is an open source toolkit for building iOS, Android, and Progressive Web Apps from one codebase with HTML, CSS, and JavaScript, announced in 2013 and acquired by OutSystems in 2022.