Figure 4.
The panels a and b map electric field around an elliptical nanoparticle above the curved boundary, with scales from 0 to 250 volts per centimetre. Panel a contains the lowest field above the nanoparticle and higher values farther from it, with local increases near its ends. Panel b contains low values above and below the nanoparticle, higher values near its ends, and the highest values within the nanoparticle. Panels c and d map the corresponding field with scales from 0 to 500 volts per centimetre. Panel c contains low values around the nanoparticle and values near 500 volts per centimetre beyond the curved boundary. Panel d contains a low field above and below the nanoparticle, local increases near its ends, and values near 500 volts per centimetre within the nanoparticle and beyond the boundary. Panel e plots electric field against a sampling line from 0 to 0.3 micrometres at 0.5 and 55 microseconds. At 0.5 microseconds, the field measures about 840 volts per centimetre in the cell interior, about 80 volts per centimetre in the first cell exterior segment, near 0 through the nanoparticle core, and about 20 volts per centimetre in the final cell exterior segment. At 55 microseconds, the corresponding values measure about 115, 10, 0, and 110 to 130 volts per centimetre. Panel f plots the same regions at 5 and 55 microseconds. At 5 microseconds, values measure about 400, 35, 0, and 20 volts per centimetre. At 55 microseconds, values measure about 115, 15, 0, and 110 to 130 volts per centimetre. Panel g plots the regions at 0.5 and 55 microseconds. At 0.5 microseconds, the field measures about 790 volts per centimetre in the cell interior, decreases from about 80 to 0 in the first exterior segment, decreases from about 1000 to 940 through the nanoparticle core, and increases from 0 to about 30 in the final exterior segment. At 55 microseconds, values measure about 110, 0, 300, and 0 to 20 volts per centimetre. Panel h plots the regions at 5 and 55 microseconds. At 5 microseconds, values measure about 390, decrease from about 45 to 0, decrease from about 540 to 500, and increase from 0 to about 20 volts per centimetre. At 55 microseconds, values measure about 110, decrease to 0, remain near 300, and increase from 0 to about 20 volts per centimetre.Color plot of the electric field strength for (a)–(c) gold and (b)–(d) dielectric nanoparticle horizontally-oriented in position P0 in Figure 1(d) at (a)–(c) 55 μs and (b)–(d) at tr/2, considering a pulse with a rise time of 1 μs. Electric field along Lc for (e) and (f) gold and (g) and (h) dielectric nanoparticle for a pulse rise time of (e)–(g) 1 μs and (f)–(h) 10 μs
Source: Authors’ own work