Editing Allotropy (section)

== Nanoallotropes ==
In 2017, the concept of nanoallotropy was proposed.<ref name=":0">{{Cite journal|last1=Udayabhaskararao|first1=Thumu|last2=Altantzis|first2=Thomas|last3=Houben|first3=Lothar|last4=Coronado-Puchau|first4=Marc|last5=Langer|first5=Judith|last6=Popovitz-Biro|first6=Ronit|last7=Liz-Marzán|first7=Luis M.|last8=Vuković|first8=Lela|last9=Král|first9=Petr|date=2017-10-27|title=Tunable porous nanoallotropes prepared by post-assembly etching of binary nanoparticle superlattices|journal=Science|language=en|volume=358|issue=6362|pages=514–518|doi=10.1126/science.aan6046|issn=0036-8075|pmid=29074773|bibcode=2017Sci...358..514U|doi-access=free|hdl=10067/1472420151162165141|hdl-access=free}}</ref> Nanoallotropes, or allotropes of [[nanomaterials]], are nanoporous materials that have the same chemical composition (e.g., Au), but differ in their architecture at the nanoscale (that is, on a scale 10 to 100 times the dimensions of individual atoms).<ref name=":1">{{Cite web|url=http://israelbds.org/materials-that-dont-exist-in-nature-might-lead-to-new-fabrication-techniques/|title=Materials That Don't Exist in Nature Might Lead to New Fabrication Techniques|website=israelbds.org|language=en-US|access-date=2017-12-08|archive-url=https://web.archive.org/web/20171209152005/http://israelbds.org/materials-that-dont-exist-in-nature-might-lead-to-new-fabrication-techniques/|archive-date=2017-12-09|url-status=dead}}</ref> Such nanoallotropes may help create ultra-small electronic devices and find other industrial applications.<ref name=":1" /> The different nanoscale architectures translate into different properties, as was demonstrated for [[surface-enhanced Raman scattering]] performed on several different nanoallotropes of gold.<ref name=":0" /> A two-step method for generating nanoallotropes was also created.<ref name=":1" />