000196134 001__ 196134
000196134 005__ 20181203023418.0
000196134 0247_ $$2doi$$a10.1021/nl403279y
000196134 022__ $$a1530-6984
000196134 02470 $$2ISI$$a000328439200046
000196134 037__ $$aARTICLE
000196134 245__ $$aEnhancement of Second Harmonic Signal in Nanofabricated Cones
000196134 269__ $$a2013
000196134 260__ $$aWashington$$bAmerican Chemical Society$$c2013
000196134 300__ $$a7
000196134 336__ $$aJournal Articles
000196134 520__ $$aGeometrical effects in optical nanostructures on nanoscale can lead to interesting phenomena such as inhibition of spontaneous emission,(1,2) high-reflecting omnidirectional mirrors, structures that exhibit low-loss-waveguiding,(3) and light confinement.(4,5) Here, we demonstrate a similar concept of exploiting the geometrical effects on nanoscale through precisely fabricating lithium niobate (LiNbO3) nanocones arrays devices. We show a strong second harmonic generation (SHG) enhancement, shape and arrangement dependent, up to 4 times bigger than the bulk one. These devices allow below diffraction limited observation, being perfect platforms for single molecule fluorescence microscopy(6) or single cell endoscopy.(7) Nanocones create a confined illumination volume, devoid from blinking and bleaching, which can excite molecules in nanocones proximity. Illumination volume can be increased by combining the SH enhancement effect with plasmon resonances, excited thanks to a gold plasmonic shell deposited around the nanostructures. This results in a local further enhancement of the SH signal up to 20 times. The global SH enhancement can be rationally designed and tuned through the means of simulations.
000196134 6531_ $$aSecond harmonic generation
000196134 6531_ $$alithium niobate
000196134 6531_ $$ananocones
000196134 6531_ $$aenhancement
000196134 6531_ $$aplasmons
000196134 6531_ $$asingle molecule detection
000196134 700__ $$aDutto, F.$$uEcole Polytech Fed Lausanne, Inst Bioengn, Lab Nanoscale Biol, CH-1015 Lausanne, Switzerland
000196134 700__ $$aHeiss, M.$$uEcole Polytech Fed Lausanne, Inst Mat, Lab Semicond Mat, CH-1015 Lausanne, Switzerland
000196134 700__ $$aLovera, A.$$uEcole Polytech Fed Lausanne, Inst Micro Engn, Lab Nanophoton & Metrol, CH-1015 Lausanne, Switzerland
000196134 700__ $$aLopez-Sanchez, O.
000196134 700__ $$aFontcuberta I. Morral, A.
000196134 700__ $$0240208$$aRadenovic, A.$$g161458$$uEcole Polytech Fed Lausanne, Inst Bioengn, Lab Nanoscale Biol, CH-1015 Lausanne, Switzerland
000196134 773__ $$j13$$k12$$q6048-6054$$tNano Letters
000196134 8564_ $$s4989986$$uhttps://infoscience.epfl.ch/record/196134/files/NanoLetters_Dutto_2013.pdf$$yn/a$$zn/a
000196134 909C0 $$0252069$$pLBEN$$xU11842
000196134 909CO $$ooai:infoscience.tind.io:196134$$pSTI$$particle
000196134 917Z8 $$x161458
000196134 917Z8 $$x161458
000196134 937__ $$aEPFL-ARTICLE-196134
000196134 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000196134 980__ $$aARTICLE