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Changes to the site

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What changed on Flatland itself, newest first. The news feed updates every day on its own and is not listed here.

Last change 5 Oct 2026RSS feed

5 October 2026

  • Every glossary entry checked All 204 glossary entries were read against their sources: the WTe2 magnetoresistance now reaches 13 million percent, the Monte Carlo entry counts configurations correctly, CrI3’s anisotropy is traced to the exchange through its iodine atoms as the cited paper finds, disputed readings of NiI2 and of mirror twin boundaries are marked as disputed, and stock phrasing was cut throughout. See it
  • Every material page checked The last 33 families – the magnets, oxides, halides and frameworks – were read through, which completes the catalogue: Mn3Si2Te6 now cites the paper that proposed its orbital currents, and claims about EuSn2As2 and SnO were toned down to what the evidence supports. See it
  • Twenty-nine more material pages checked The remaining elemental families and every page in the dichalcogenide group were read through: monolayer SnS and SnSe are now ferroelectric as measured in 2020, not only as predicted; silicene’s spin–orbit gap is compared with graphene’s correctly; NbSe2 names the broken symmetry behind its Ising superconductivity; and a few overstated claims were toned down. See it
  • Twelve material pages checked Graphene, twisted graphene, hBN, phosphorene, MoS2, WS2, MoSe2, WSe2, MoTe2, WTe2, MXenes and the chromium trihalides were read through: MoS2 now gives the 42 Ω·µm antimony contacts, WSe2 its superconducting twisted bilayers, twisted graphene its first single-photon detection, and CrI3 a more accurate place in the history of 2D magnetism. See it
  • Values that disagreed A new check compares the same quantity across pages: CuInP2S6’s ferroelectric transition is now 315 K everywhere, Cr2Ge2Te6 orders below ~65 K on every page, and the band-gap shift measured by Raja and colleagues is given as their paper gives it. The ten cited papers that were later corrected were read too; no correction touches what the site says.
  • Companies and programmes checked Every company and funding programme on the Engineering page was checked against current sources: Haydale’s new name and focus, Paragraf’s graphene transistors, NIST running the US National Semiconductor Technology Center itself since August 2025, and boron rather than borates, as the EU’s Critical Raw Materials Act lists it. See it

4 October 2026

  • Every reference checked All 911 cited papers were checked against Crossref for title, year, first author, journal, volume and first page, and none was wrong or retracted; the check now runs every week. The facility list now says that Elettra takes no proposals until its upgrade is finished. See it
  • Engineering brought up to date The best contacts now quoted at 42 Ω·µm with antimony, China’s export licensing of tungsten, molybdenum, tellurium, bismuth and indium since February 2025 added to the supply chain, the 2024 edition of the ISO vocabulary for 2D materials cited, and the text tightened. See it
  • Experiment brought up to date A new entry on Bridgman and melt growth, the high-pressure hBN from NIMS that most devices use added with its paper, NFFA-Europe taken off the facilities because its access calls have ended, MXene batch sizes and ionic gating stated correctly, and the text tightened. See it
  • Theory brought up to date Superconductivity in twisted WSe2, contacts near the quantum limit, the softening of universal machine-learned potentials and ferroelectric SnTe one unit cell thick, each with its paper, silicon’s exciton binding energy corrected, and the statements on magnetic anisotropy, charged defects and hBN emitters made more precise. See it
  • Subscripts in paper titles Chemical formulas in the titles of cited papers and in the names of the arXiv searches are now set with subscripts, as in WSe2/WS2, on every page.
  • Applications checked through Four one-line summaries rewritten, the energy savings of better desalination membranes put in proportion, a few claims corrected or sourced, and the news no longer picks up silicon “monolayer doping”. See it
  • Basics brought up to date Peeling with tape now reaches centimetre-sized monolayers, bulk crystals are grown by vapour transport, flux or melt, a few figures and claims were corrected, and the text was tightened. See it
  • Four more glossary terms Disorder and localisation, magnetometry, critical raw materials and neutron scattering, each with a drawing. See it

3 October 2026

  • Thirty-four more glossary terms Metal, semimetal and insulator; the Hall effect; point defects; electron–phonon coupling; resistivity and sheet resistance; surface states; linear and circular dichroism; Bridgman growth; pump–probe spectroscopy; commensurate and incommensurate; atomic layer deposition; nematic order; skyrmions; hydrothermal synthesis; wafer-scale growth; single crystals; layer transfer; the exchange interaction; composites and coatings; 2D membranes; etching; silicon photonics; battery electrodes; sensors; dispersions and inks; toxicity and safety; stoichiometry; chirality; solid lubricants; quasiparticles; chemical bonds; phase transitions; dielectrics; and gating, each with a drawing. The glossary also recognises more spellings, such as n-type, permittivity and 1T. See it

2 October 2026

  • Polyhedra in the crystal viewer A Polyhedra button shows the shape the neighbouring atoms make around each metal atom: a trigonal prism in 2H-MoS2, an octahedron in 1T′-MoTe2. The bulk views also outline the whole unit cell around the sheet in the middle. See it
  • RSS feeds The news now has an RSS feed, and so does every material that has news, for example MoS2 only. See it
  • Cite this page A button in the footer gives a ready citation and a BibTeX entry for the page you are reading.
  • Twenty more news sources Eight more journals, the ACS and Royal Society of Chemistry titles through Crossref, and five more news and subject feeds, among them Nature’s graphene and 2D-materials subjects. See it
  • Citation counts and a CSV file References show how often each paper has itself been cited, and the catalogue can be downloaded as a spreadsheet. See it
  • Releases of the codes The theory page lists the newest release of fourteen codes, from Quantum ESPRESSO to pymatgen. See it
  • Compare and news, refined A comparison can show only the rows that differ and be copied as a link, and the news page marks what is new since your last visit.
  • Link previews and shortcuts Every material has its own preview card when its link is shared, and pressing ? lists the keyboard shortcuts.

1 October 2026

  • A course A step-by-step course for anyone with school maths: short steps, three questions each, and your progress kept in your browser. Three levels are open. See it
  • Compare materials Up to three families side by side, row by row from their data sheets, with the choice kept in the address. See it
  • Copy a citation, preview on hover Every reference has a Copy citation button, and glossary terms and material links open a small card when pointed at.
  • Photographs Micrographs and photographs open larger when clicked.
  • Catalogue and long pages The catalogue table sorts by clicking a column name, its filters stay in the address, and long pages have one control that opens every “Read more”.

30 September 2026

  • The catalogue as a table Filters now stand beside the cards on a wide screen, and the catalogue can be shown as a table. See it
  • A crystal beside every name Material pages and cards show the crystal’s lattice, and Basics and the tracks have a picture beside the title.
  • Search over the page Search opens from the header over whatever you are reading, and section headings have a link you can copy.
  • Theme switch and a calmer page The colour theme switch moved into the header, pages cross-fade, and long pages alternate two paper tones.
  • A plainer glossary Every term starts with a plain explanation, then goes deeper, then the specialist version; new terms include Janus layers and alloys. See it

29 September 2026

  • Drawings that explain New drawings show why anything stacks, why graphene is strong yet bends, why excitons survive, and why graphene’s electrons are massless; “Three knobs” became a mixing desk of sliders. See it
  • Search forgives Search finds word endings, typos and extra words.
  • More glossary terms About twenty terms the site leaned on without defining are now explained, among them interlayer coupling, CMOS, polaritons and BKT.

28 September 2026

  • Bulk crystals Most crystal models can switch from one layer to their bulk stackings, such as 2H and 3R MoS2, and show the c axis; each data sheet gives the bulk and monolayer space groups.

27 September 2026

  • Making and manufacturing The catalogue filters by how each material is made, the manufacturing problems are one table, and the reproducibility traps became a checklist. See it
  • Charts and questions A chart shows which materials the applications rely on and how soon, and search covers the questions people ask.

26 September 2026

  • A reading page Journals and books worth knowing, with what each is good for. See it
  • Conferences checked The conference list was rechecked against the organisers’ sites. See it

25 September 2026

  • More drawings and charts The experiment page shows the dry pick-up transfer and what each growth method gives; charts show the Nobel prizes, the next year of conferences and the glossary terms that come up most; the Basics page lets you thicken a crystal.

24 September 2026

  • Find materials faster The catalogue filters by element with a periodic table, sorts by name, band gap or readiness, and charts the band gaps of 40 families; pressing / searches from any page. See it
  • The news, drawn from data The full news list now loads from data and its chart filters the list.