Journal
JAPANESE JOURNAL OF APPLIED PHYSICS
Volume 57, Issue 12, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/JJAP.57.122001
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Funding
- National Research Foundation of Korea (NRF) - Ministry of Education [2017R1A2B4009832]
- National Research Foundation of Korea [2017R1A2B4009832] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This work reports changes in surface plasmons according to the shape and diameter of nanoholes in thin metal films of varying thickness. Cylindrical and reversed trapezoidal nanoholes were simulated using the finite-difference time-domain (FDTD) method. Nanoholes of 10, 50, and 100 nm diameters were modelled in 40-, 60-, and 80-nm-thick metal films. The strongest local electric field enhancement occurred with a reversed trapezoidal hole of 10 nm size in a 100-nm-thick metal film. The resonance wavelength was red shifted by decreasing the hole size and/or increasing the metal film thickness. (C) 2018 The Japan Society of Applied Physics
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