Impurity-Driven Cone Formation During Laser Sputtering of Graphite
Sputtering of highly oriented pyrolytic graphite (HOPG) by 248-nanometer laser radiation was studied. Neutral carbon atoms and small clusters were ejected with significantly higher translational energies than were expected from a simple model of thermal vaporization in the absence of a potential bar...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 1993-03, Vol.259 (5101), p.1590-1592 |
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| container_end_page | 1592 |
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| container_issue | 5101 |
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| container_title | Science (American Association for the Advancement of Science) |
| container_volume | 259 |
| creator | Krajnovich, Douglas J. Vázquez, José E. Savoy, Richard J. |
| description | Sputtering of highly oriented pyrolytic graphite (HOPG) by 248-nanometer laser radiation was studied. Neutral carbon atoms and small clusters were ejected with significantly higher translational energies than were expected from a simple model of thermal vaporization in the absence of a potential barrier. The HOPG also developed a remarkable surface morphology that consists of regular cones and domes. Cone formation appears to be initiated by trace metal impurities that serve as heat shunts in this highly anisotropic material. |
| doi_str_mv | 10.1126/science.259.5101.1590 |
| format | Article |
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Neutral carbon atoms and small clusters were ejected with significantly higher translational energies than were expected from a simple model of thermal vaporization in the absence of a potential barrier. The HOPG also developed a remarkable surface morphology that consists of regular cones and domes. 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Neutral carbon atoms and small clusters were ejected with significantly higher translational energies than were expected from a simple model of thermal vaporization in the absence of a potential barrier. The HOPG also developed a remarkable surface morphology that consists of regular cones and domes. Cone formation appears to be initiated by trace metal impurities that serve as heat shunts in this highly anisotropic material.</description><subject>Air ionization</subject><subject>Atoms</subject><subject>Carbon</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Exact sciences and technology</subject><subject>Graphite</subject><subject>Impurities</subject><subject>Laser beams</subject><subject>Lasers</subject><subject>Materials</subject><subject>Physical radiation effects, radiation damage</subject><subject>Physics</subject><subject>Sputtering (Irradiation)</subject><subject>Sputtering (Physics)</subject><subject>Staircases</subject><subject>Structure of solids and liquids; crystallography</subject><subject>Thermal conductivity</subject><subject>Ultraviolet, visible, and infrared radiation effects (including laser radiation)</subject><issn>0036-8075</issn><issn>1095-9203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><recordid>eNqN0kFv0zAUB3ALgVgpfANAOSDBYSl2HNvJcetYqVTRw4Cr5bgvwVMSZ7aD2LfHpdFQpR4qHyz5_Z6lp_dH6B3BC0Iy_tlrA72GRcbKBSOYLAgr8TM0I7hkaZlh-hzNMKY8LbBgF-iV9_cYx1pJX6ILIgSlOMtm6HrdDaMz4TG9ceY39MnS9pDcWtepYGyf3MRi3yQb5cEld8MYAvx7sHWycmr4ZQK8Ri9q1Xp4M91z9OP2y_fl13SzXa2XV5tUc0pCWijAuuSkwoUiDKqcay04xbwAUQtGY4Hnu6yqaiEypaocFyWjOROacLYDQufo4-HfwdmHEXyQnfEa2lb1YEcv40ikpCXdy8uDbFQL0vS1DU7pBnpwqo3z1SY-XxHKOOVZHnl6gsezg87oU_7TkY8kwJ_QqNF7ub77djbd_jybXq_OpcVqc0QvT1Ft2xYakHFBy-0RZweunfXeQS0HZzrlHiXBcp87OeVOxtzJfe7kPnex7_20m7HqYPe_awpaBB8moLxWbe1Ur41_cjkXhMfdzdHbA7v3wbqnclYUmHNC_wLcVuVl</recordid><startdate>19930312</startdate><enddate>19930312</enddate><creator>Krajnovich, Douglas J.</creator><creator>Vázquez, José E.</creator><creator>Savoy, Richard J.</creator><general>American Society for the Advancement of Science</general><general>American Association for the Advancement of Science</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8GL</scope><scope>IBG</scope><scope>IOV</scope><scope>ISN</scope><scope>7X8</scope></search><sort><creationdate>19930312</creationdate><title>Impurity-Driven Cone Formation During Laser Sputtering of Graphite</title><author>Krajnovich, Douglas J. ; Vázquez, José E. ; Savoy, Richard J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c631t-8ae0c961b08a15eb46cc763068e7f7531b064d2bbf772aab408953457c165de13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Air ionization</topic><topic>Atoms</topic><topic>Carbon</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>Exact sciences and technology</topic><topic>Graphite</topic><topic>Impurities</topic><topic>Laser beams</topic><topic>Lasers</topic><topic>Materials</topic><topic>Physical radiation effects, radiation damage</topic><topic>Physics</topic><topic>Sputtering (Irradiation)</topic><topic>Sputtering (Physics)</topic><topic>Staircases</topic><topic>Structure of solids and liquids; crystallography</topic><topic>Thermal conductivity</topic><topic>Ultraviolet, visible, and infrared radiation effects (including laser radiation)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Krajnovich, Douglas J.</creatorcontrib><creatorcontrib>Vázquez, José E.</creatorcontrib><creatorcontrib>Savoy, Richard J.</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Gale In Context: High School</collection><collection>Gale In Context: Biography</collection><collection>Gale In Context: Opposing Viewpoints</collection><collection>Gale In Context: Canada</collection><collection>MEDLINE - Academic</collection><jtitle>Science (American Association for the Advancement of Science)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Krajnovich, Douglas J.</au><au>Vázquez, José E.</au><au>Savoy, Richard J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Impurity-Driven Cone Formation During Laser Sputtering of Graphite</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><addtitle>Science</addtitle><date>1993-03-12</date><risdate>1993</risdate><volume>259</volume><issue>5101</issue><spage>1590</spage><epage>1592</epage><pages>1590-1592</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><coden>SCIEAS</coden><abstract>Sputtering of highly oriented pyrolytic graphite (HOPG) by 248-nanometer laser radiation was studied. Neutral carbon atoms and small clusters were ejected with significantly higher translational energies than were expected from a simple model of thermal vaporization in the absence of a potential barrier. The HOPG also developed a remarkable surface morphology that consists of regular cones and domes. Cone formation appears to be initiated by trace metal impurities that serve as heat shunts in this highly anisotropic material.</abstract><cop>Washington, DC</cop><pub>American Society for the Advancement of Science</pub><pmid>17733022</pmid><doi>10.1126/science.259.5101.1590</doi><tpages>3</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0036-8075 |
| ispartof | Science (American Association for the Advancement of Science), 1993-03, Vol.259 (5101), p.1590-1592 |
| issn | 0036-8075 1095-9203 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_733193931 |
| source | American Association for the Advancement of Science; Jstor Complete Legacy |
| subjects | Air ionization Atoms Carbon Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Graphite Impurities Laser beams Lasers Materials Physical radiation effects, radiation damage Physics Sputtering (Irradiation) Sputtering (Physics) Staircases Structure of solids and liquids crystallography Thermal conductivity Ultraviolet, visible, and infrared radiation effects (including laser radiation) |
| title | Impurity-Driven Cone Formation During Laser Sputtering of Graphite |
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