DataVXAdvanced Optical MaterialsPaper
journal article·2020-06

Frequency‐Agile Temporal Terahertz Metamaterials

Prakash Pitchappa, Abhishek Kumar, Haidong Liang, Saurav Prakash, Nan Wang, Andrew A. Bettiol, Thirumalai Venkatesan, Chengkuo Lee, Ranjan Singh

Advanced Optical Materials· Volume 8· Issue 12
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Source abstract

Abstract

Abstract Spatiotemporal manipulation of electromagnetic waves has recently enabled a plethora of exotic optical functionalities, such as non‐reciprocity, dynamic wavefront control, unidirectional transmission, linear frequency conversion, and electromagnetic Doppler cloak. Here, an additional dimension is introduced for advanced manipulation of terahertz waves in the space‐time, and frequency domains through integration of spatially reconfigurable microelectromechanical systems and photoresponsive material into metamaterials. A large and continuous frequency agility is achieved through movable microcantilevers. The ultrafast resonance modulation occurs upon photoexcitation of ion‐irradiated silicon substrate that hosts the microcantilever metamaterial. The fabricated metamaterial switches in 400 ps and provides large spectral tunability of 250 GHz with 100% resonance modulation at each frequency. The integration of perfectly complementing technologies of microelectromechanical systems, femtosecond optical control and ion‐irradiated silicon provides unprecedented concurrent control over space, time, and frequency response of metamaterial for designing frequency‐agile spatiotemporal modulators, active beamforming, and low‐power frequency converters for the next generation terahertz wireless communications.
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Research context

OpenAlex topics: Metamaterials and Metasurfaces Applications · Terahertz technology and applications · Millimeter-Wave Propagation and Modeling

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore

Centre for Disruptive Photonic Technologies The Photonic Institute 50 Nanyang Avenue Singapore 639798 Singapore

Institute of Microelectronics Agency for Science, Technology and Research (A*STAR) 2 Fusionopolis Way Singapore 138634 Singapore

NUSNNI‐NanoCore National University of Singapore Singapore 117411 Singapore

Centre for Ion Beam Applications (CIBA) Department of Physics National University of Singapore Singapore 117542 Singapore

NUS Graduate School for Integrative Science and Engineering National University of Singapore Singapore 117456 Singapore

Department of Physics National University of Singapore Singapore 117542 Singapore

Department of Electrical and Computer Engineering National University of Singapore Singapore 117583 Singapore

Department of Materials Science and Engineering National University of Singapore Singapore 117575 Singapore

Funding

National Science Foundation, United Arab Emirates · Agence Nationale de la Recherche · Agency for Science, Technology and Research · National Research Foundation Singapore

References (60)

Show source-provided references
1. 10.1109/22.98997410.1109/22.989974 ↗
2. 10.1109/TMTT.2004.83591610.1109/TMTT.2004.835916 ↗
3. 10.1038/nphoton.2007.310.1038/nphoton.2007.3 ↗
4. 10.1109/JPROC.2007.89890310.1109/JPROC.2007.898903 ↗
5. 10.1109/TTHZ.2011.215955210.1109/TTHZ.2011.2159552 ↗
6. 10.1038/s41928-018-0173-210.1038/s41928-018-0173-2 ↗
7. 10.1103/RevModPhys.83.54310.1103/RevModPhys.83.543 ↗
8. 10.1103/RevModPhys.91.02500510.1103/RevModPhys.91.025005 ↗
9. 10.1126/science.109402510.1126/science.1094025 ↗
10. 10.1364/OE.16.00718110.1364/OE.16.007181 ↗
11. 10.1002/lpor.20100004310.1002/lpor.201000043 ↗
12. 10.1126/science.123539910.1126/science.1235399 ↗
13. 10.1016/j.mattod.2014.07.01010.1016/j.mattod.2014.07.010 ↗
14. 10.1088/2040-8978/14/11/11400910.1088/2040-8978/14/11/114009 ↗
15. He Q. · Research · 2019 · 2019 · 16
16. 10.1103/PhysRevLett.96.10740110.1103/PhysRevLett.96.107401 ↗
17. 10.1038/nature0534310.1038/nature05343 ↗
18. 10.1515/nanoph-2017-004010.1515/nanoph-2017-0040 ↗
19. 10.1038/nphoton.2008.5210.1038/nphoton.2008.52 ↗
20. 10.1002/adom.20150067610.1002/adom.201500676 ↗
21. 10.1063/1.496906110.1063/1.4969061 ↗
22. 10.1126/sciadv.aar735310.1126/sciadv.aar7353 ↗
23. 10.1002/adom.20190105010.1002/adom.201901050 ↗
24. 10.1038/ncomms190810.1038/ncomms1908 ↗
25. 10.1002/adma.20170073310.1002/adma.201700733 ↗
26. 10.1002/adom.20160071610.1002/adom.201600716 ↗
27. 10.1038/nphoton.2009.310.1038/nphoton.2009.3 ↗
28. 10.1038/srep1502010.1038/srep15020 ↗
29. 10.1038/s41566-018-0259-410.1038/s41566-018-0259-4 ↗
30. 10.34133/2019/648297510.34133/2019/6482975 ↗
31. 10.1002/adma.20170533110.1002/adma.201705331 ↗
32. 10.1063/1.477400310.1063/1.4774003 ↗
33. 10.1063/1.500683610.1063/1.5006836 ↗
34. 10.1038/s41467-017-01517-010.1038/s41467-017-01517-0 ↗
35. 10.1002/adma.20190145510.1002/adma.201901455 ↗
36. 10.1002/adom.20170076210.1002/adom.201700762 ↗
37. 10.1109/JSTQE.2016.261683910.1109/JSTQE.2016.2616839 ↗
38. 10.1039/C7TC05460B10.1039/C7TC05460B ↗
39. 10.1016/j.nanoen.2019.10428010.1016/j.nanoen.2019.104280 ↗
40. 10.1002/adma.20180815710.1002/adma.201808157 ↗
41. 10.1002/adom.20180025710.1002/adom.201800257 ↗
42. 10.1515/nanoph-2012-000710.1515/nanoph-2012-0007 ↗
43. 10.1002/adma.20180125710.1002/adma.201801257 ↗
44. 10.1002/adma.20180245810.1002/adma.201802458 ↗
45. 10.1002/adma.20180591210.1002/adma.201805912 ↗
46. 10.1109/JMEMS.2015.242130710.1109/JMEMS.2015.2421307 ↗
47. 10.1038/srep1167810.1038/srep11678 ↗
48. 10.1016/j.cap.2014.01.01510.1016/j.cap.2014.01.015 ↗
49. 10.1364/OE.22.02132610.1364/OE.22.021326 ↗
50. 10.1364/OE.22.03224510.1364/OE.22.032245 ↗
51. 10.1063/1.487199910.1063/1.4871999 ↗
52. 10.1038/ncomms215310.1038/ncomms2153 ↗
53. 10.1002/adma.20160335510.1002/adma.201603355 ↗
54. 10.1063/1.9817310.1063/1.98173 ↗
55. 10.1007/978-3-642-68779-2_510.1007/978-3-642-68779-2_5 ↗
56. 10.1088/0960-1317/22/11/11300110.1088/0960-1317/22/11/113001 ↗
57. 10.1364/OE.23.00012110.1364/OE.23.000121 ↗
58. 10.1002/adom.20180003010.1002/adom.201800030 ↗
59. 10.1364/OPTICA.2.00057110.1364/OPTICA.2.000571 ↗
60. 10.1002/adom.20150058810.1002/adom.201500588 ↗