Topological Insulators by Topology Optimization
An acoustic topological insulator (TI) is synthesized using topology optimization, a free material inverse design method. The TI appears spontaneously from the optimization process without imposing explicit requirements on the existence of pseudospin-1/2 states at the TI interface edge, or the Chern...
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| Veröffentlicht in: | Physical review letters 2019-06, Vol.122 (23), p.234502-234502, Article 234502 |
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| container_title | Physical review letters |
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| creator | Christiansen, Rasmus E Wang, Fengwen Sigmund, Ole |
| description | An acoustic topological insulator (TI) is synthesized using topology optimization, a free material inverse design method. The TI appears spontaneously from the optimization process without imposing explicit requirements on the existence of pseudospin-1/2 states at the TI interface edge, or the Chern number of the topological phases. The resulting TI is passive, consisting of acoustically hard members placed in an air background and has an operational bandwidth of ≈12.5% showing high transmission. Further analysis demonstrates confinement of more than 99% of the total field intensity in the TI within at most six lattice constants from the TI interface. The proposed design hereby outperforms a reference from recent literature regarding energy transmission, field confinement, and operational bandwidth. |
| doi_str_mv | 10.1103/PhysRevLett.122.234502 |
| format | Article |
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The proposed design hereby outperforms a reference from recent literature regarding energy transmission, field confinement, and operational bandwidth.</description><subject>Acoustic insulation</subject><subject>Confinement</subject><subject>Design optimization</subject><subject>Energy transmission</subject><subject>Inverse design</subject><subject>Lattice parameters</subject><subject>Topological insulators</subject><subject>Topology optimization</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNpdkE1Lw0AQhhdRbK3-hRLw4iXtzG52N3uU4kchUJF6XjbJVlOSbMwmQvz1RlpFPM1hnvdl5iFkjrBABLZ8ehv8s_1IbNctkNIFZREHekKmCFKFEjE6JVMAhqECkBNy4f0eAJCK-JxMGFIVK8ApWW5d40r3WmSmDNa170vTudYH6RAcN0OwabqiKj5NV7j6kpztTOnt1XHOyMv93Xb1GCabh_XqNgkzpmgX5lIYwbnYMZGj5JlEgykHCzxVKTeZTalMraKGWRYzE0MESlkRCak4ZCpnM3Jz6G1a995b3-mq8JktS1Nb13tNKZcSBafRiF7_Q_eub-vxupGKFI5_MhgpcaCy1nnf2p1u2qIy7aAR9LdS_UepHpXqg9IxOD_W92ll89_Yj0P2BSf-c4A</recordid><startdate>20190614</startdate><enddate>20190614</enddate><creator>Christiansen, Rasmus E</creator><creator>Wang, Fengwen</creator><creator>Sigmund, Ole</creator><general>American Physical Society</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope></search><sort><creationdate>20190614</creationdate><title>Topological Insulators by Topology Optimization</title><author>Christiansen, Rasmus E ; Wang, Fengwen ; Sigmund, Ole</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c392t-d76a6556f36d175c71a1b50e05b9b5aceb27be92a3e383a804099e6467950c9d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Acoustic insulation</topic><topic>Confinement</topic><topic>Design optimization</topic><topic>Energy transmission</topic><topic>Inverse design</topic><topic>Lattice parameters</topic><topic>Topological insulators</topic><topic>Topology optimization</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Christiansen, Rasmus E</creatorcontrib><creatorcontrib>Wang, Fengwen</creatorcontrib><creatorcontrib>Sigmund, Ole</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Christiansen, Rasmus E</au><au>Wang, Fengwen</au><au>Sigmund, Ole</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Topological Insulators by Topology Optimization</atitle><jtitle>Physical review letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>2019-06-14</date><risdate>2019</risdate><volume>122</volume><issue>23</issue><spage>234502</spage><epage>234502</epage><pages>234502-234502</pages><artnum>234502</artnum><issn>0031-9007</issn><eissn>1079-7114</eissn><abstract>An acoustic topological insulator (TI) is synthesized using topology optimization, a free material inverse design method. 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| ispartof | Physical review letters, 2019-06, Vol.122 (23), p.234502-234502, Article 234502 |
| issn | 0031-9007 1079-7114 |
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| source | American Physical Society Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Acoustic insulation Confinement Design optimization Energy transmission Inverse design Lattice parameters Topological insulators Topology optimization |
| title | Topological Insulators by Topology Optimization |
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