TY - JOUR
T1 - Switching of localized surface plasmon resonance of gold nanoparticles using phase-change materials and implementation of computing functionality
AU - Saiki, Toshiharu
N1 - Funding Information:
The author is grateful to T. Hira, T. Homma, K. Kuwamura, T. Uchiyama, T. Yawatari, Y. Kihara, S. Kanazawa, Y. Hirukawa, for their invaluable contributions to this study, and to T. Shintani and M. Kuwahara for technical support with GeSbTe sputtering. This research was supported by a Kakenhi Grant-in-Aid (Nos. 16H03889 and 24226006) from the Japan Society for the Promotion of Science (JSPS) and the Core-to-Core Program, Advanced Research Networks, and partially by the Advanced Photon Science Alliance Project of the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT).
Publisher Copyright:
© 2017, Springer-Verlag GmbH Germany.
PY - 2017/9/1
Y1 - 2017/9/1
N2 - Modulation of the localized surface plasmon resonance (LSPR) of gold nanospheres was investigated using a GeSbTe (GST) film as an active medium. Single-particle spectroscopy of AuNPs placed on a GST film and AuNPs on a GST/Au film (metal–insulator–metal sandwich structure) was performed, and significant switching behavior of the LSPR band due to the interaction with GST was observed. The switching mechanism was explained in terms of a change in the dielectric function of GST, and modification of the surface morphology accompanying the volume expansion and reduction of GST. To go beyond this single-particle switching functionality, we discuss the possible implementation of computing functionality that emerges from spatial correlation due to the near-field interaction of switching elements. We demonstrate that the temporal and spatial evolution of plasmon phase-change material array system can be equivalent to a cellular automata algorithm. The possibility of solving a spin-glass problem was also investigated using a coupled plasmon particle system, in which the individual coupling strengths can be modified to optimize the system so that the exact solution can be easily reached.
AB - Modulation of the localized surface plasmon resonance (LSPR) of gold nanospheres was investigated using a GeSbTe (GST) film as an active medium. Single-particle spectroscopy of AuNPs placed on a GST film and AuNPs on a GST/Au film (metal–insulator–metal sandwich structure) was performed, and significant switching behavior of the LSPR band due to the interaction with GST was observed. The switching mechanism was explained in terms of a change in the dielectric function of GST, and modification of the surface morphology accompanying the volume expansion and reduction of GST. To go beyond this single-particle switching functionality, we discuss the possible implementation of computing functionality that emerges from spatial correlation due to the near-field interaction of switching elements. We demonstrate that the temporal and spatial evolution of plasmon phase-change material array system can be equivalent to a cellular automata algorithm. The possibility of solving a spin-glass problem was also investigated using a coupled plasmon particle system, in which the individual coupling strengths can be modified to optimize the system so that the exact solution can be easily reached.
UR - http://www.scopus.com/inward/record.url?scp=85027550001&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85027550001&partnerID=8YFLogxK
U2 - 10.1007/s00339-017-1185-x
DO - 10.1007/s00339-017-1185-x
M3 - Article
AN - SCOPUS:85027550001
SN - 0947-8396
VL - 123
JO - Applied Physics A: Materials Science and Processing
JF - Applied Physics A: Materials Science and Processing
IS - 9
M1 - 577
ER -