Nanorod berlian teragregasi: Perbedaan antara revisi

Permukaan &amp;lt;111&amp;gt;‹111› (normal hingga diagonal terbesar kubus) berlian murni memiliki nilai kekerasan 167±6 GPa jika digores dengan ujung nanodiamond, sedangkan sampel nanodiamond sendiri memiliki nilai 310 GPa jika diuji dengan nanodiamond tip. Namun, pengujian tersebut hanya berfungsi dengan baik dengan ujung yang terbuat dari bahan yang lebih keras daripada sampel yang diuji karena retak. Artinya, nilai sebenarnya nanodiamond kemungkinan lebih rendah dari 310 GPa.<ref name="blank">{{Cite journal|last=Blank|first=V|year=1998|title=Ultrahard and superhard phases of fullerite C₆₀: Comparison with diamond on hardness and wear|url=http://nanoscan.info/wp-content/publications/article_03.pdf|journal=Diamond and Related Materials|volume=7|issue=2–5|pages=427–431|bibcode=1998DRM.....7..427B|doi=10.1016/S0925-9635(97)00232-X|archive-url=https://web.archive.org/web/20110721225258/http://nanoscan.info/wp-content/publications/article_03.pdf|archive-date=2011-07-21|url-status=dead}}</ref> Karena kekerasannya, hyperdiamond mungkin bisa melebihi 10 [[Skala Mohs|skala kekerasan mineral Mohs]] .

ADNR (hyperdiamonds/nanodiamonds) diproduksi dengan mengompresi bubuk fullerite—suatu bentuk padat karbon fullerene [[Alotropi|alotropik]] —melalui salah satu dari dua metode yang agak mirip. Seseorang menggunakan sel landasan berlian dan memberikan tekanan ~37 GPa tanpa memanaskan sel.<ref name="blank2">{{Cite journal|last=Blank|first=V|last2=Popov|first2=M|last3=Buga|first3=S|last4=Davydov|first4=V|last5=Denisov|first5=V|last6=Ivlev|first6=A|last7=Marvin|first7=B|last8=Agafonov|first8=V|last9=Ceolin|first9=R|displayauthors=8|year=1994|title=Is C₆₀ fullerite harder than diamond?|journal=Physics Letters A|volume=188|issue=3|pages=281|bibcode=1994PhLA..188..281B|doi=10.1016/0375-9601(94)90451-0}}</ref> Dalam metode lain, fullerite dikompresi hingga tekanan yang lebih rendah (2–20 GPa) dan kemudian dipanaskan hingga suhu berkisar antara {{Convert|300|to|2500|K|C}}.<ref>{{Cite journal|last=Kozlov|first=M|year=1995|title=Superhard form of carbon obtained from C₆₀ at moderate pressure|journal=Synthetic Metals|volume=70|issue=1–3|pages=1411–1412|doi=10.1016/0379-6779(94)02900-J}}</ref><ref>{{Cite journal|last=Blank|first=V|year=1995|title=Ultrahard and superhard carbon phases produced from C₆₀ by heating at high pressure: structural and Raman studies|journal=Physics Letters A|volume=205|issue=2–3|pages=208–216|bibcode=1995PhLA..205..208B|doi=10.1016/0375-9601(95)00564-J}}</ref><ref>{{Cite journal|last=Szwarc|first=H|last2=Davydov|first2=V|last3=Plotianskaya|first3=S|last4=Kashevarova|first4=L|last5=Agafonov|first5=V|last6=Ceolin|first6=R|year=1996|title=Chemical modifications of C under the influence of pressure and temperature: from cubic C to diamond|journal=Synthetic Metals|volume=77|issue=1–3|pages=265–272|doi=10.1016/0379-6779(96)80100-7}}</ref><ref>{{Cite journal|last=Blank|first=V|year=1996|title=Phase transformations in solid C₆₀ at high-pressure-high-temperature treatment and the structure of 3D polymerized fullerites|journal=Physics Letters A|volume=220|issue=1–3|pages=149–157|bibcode=1996PhLA..220..149B|doi=10.1016/0375-9601(96)00483-5}}</ref> Kekerasan ekstrim yang sekarang tampaknya merupakan berlian nano dilaporkan oleh para peneliti pada tahun 1990an.<ref name="blank">{{Cite journal|last=Blank|first=V|year=1998|title=Ultrahard and superhard phases of fullerite C₆₀: Comparison with diamond on hardness and wear|url=http://nanoscan.info/wp-content/publications/article_03.pdf|journal=Diamond and Related Materials|volume=7|issue=2–5|pages=427–431|bibcode=1998DRM.....7..427B|doi=10.1016/S0925-9635(97)00232-X|archive-url=https://web.archive.org/web/20110721225258/http://nanoscan.info/wp-content/publications/article_03.pdf|archive-date=2011-07-21|url-status=dead}}<cite class="citation journal cs1" data-ve-ignore="true" id="CITEREFBlank1998">Blank, V (1998). [https://web.archive.org/web/20110721225258/http://nanoscan.info/wp-content/publications/article_03.pdf "Ultrahard and superhard phases of fullerite C₆₀: Comparison with diamond on hardness and wear"] <span class="cs1-format">(PDF)</span>. ''Diamond and Related Materials''. '''7''' (2–5): 427–431. [[Bibcode]]:[https://ui.adsabs.harvard.edu/abs/1998DRM.....7..427B 1998DRM.....7..427B]. [[CiteSeerX]]&nbsp;<span class="id-lock-free" title="Freely accessible">[https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.520.7265 10.1.1.520.7265]</span>. [[Pengenal objek digital|doi]]:[[doi:10.1016/S0925-9635(97)00232-X|10.1016/S0925-9635(97)00232-X]]. Archived from [http://nanoscan.info/wp-content/publications/article_03.pdf the original] <span class="cs1-format">(PDF)</span> on 2011-07-21.</cite></ref><ref name="blank2" /> Bahannya adalah serangkaian nanorod berlian yang saling berhubungan, dengan diameter antara 5 dan 20 [[nanometer]] dan panjang masing-masing sekitar 1 [[Mikrometer (satuan)|mikrometer]].<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">&#x5B; ''<nowiki><span title="This claim needs references to reliable sources. (October 2013)">kutipan diperlukan</span></nowiki>'' &#x5D;</sup>