12 Result(s)
within
Doo Jae Park
Physics, general
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Article
Erratum: Carrier-envelope phase effects on the strong-field photoemission of electrons from metallic nanostructures
Björn Piglosiewicz et al. Nature Photonics http://dx.doi.org/10.1038/nphoton.2013.288 (2013); published online 19 November 2013; corrected online 19 November 2013. In the version of this Letter originally publ...
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Article
Carrier-envelope phase effects on the strong-field photoemission of electrons from metallic nanostructures
Sharp metallic nanotapers irradiated with few-cycle laser pulses are emerging as a source of highly confined coherent electron wave packets with attosecond duration and strong directivity1,2,3,4,5,6. The possibil...
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Article
Cancer cell imaging by stable wet near-field scanning optical microscope with resonance tracking method
We report on a successful topographical and optical imaging of various cancer cells in liquid and in air by using a stable wet near-field scanning optical microscope that utilizes a resonance tracking method. ...
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Article
Thickness-dependent enhancement of the optical resolution in the vicinity of an epsilon-near-zero slab
Recent studies have reported that an epsilon-near-zero (ENZ) thin slab between a specimen and a substrate contributes to enhancing the spatial resolution of the optical system. Here, we investigate the ENZ thi...
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Article
An Optimization of Electrochemical Etching Conditions for Gold Nanotips Fabrication
We demonstrate a series of experiments to find optimized electrochemical etching condition for fabricating gold nanotip, using square-wave voltage as a bias and using hydrochloric acid diluted by acetone as an...
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Article
Surface-Plasmon Assisted Transmission Through an Ultrasmall Nanohole of ~ 10 nm with a Bull’s Eye Groove
We simulate the light transmission through an extremely small nanoscale aperture having a 10 nm diameter punctured in a metal film positioned at the center of a plasmonic bull’s eye grating. A considerable dir...
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Article
A Concept of Cantilevers Optical Dimension for Optimal Application to Cantilever-Based Near-Field Scanning Optical Microscope and Its Measurement
A guide to the selection of the apertured cantilever probe and the numerical aperture of objective lens used in a near-field scanning optical microscope (NSOM) is suggested by defining the Optical dimension of...
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Article
Characteristics of a Membrane Temperature Sensor with Variations of Silicon Oxide Thickness
In this study, to improve the performance of a temperature sensor, a thin oxide film was deposited on the silicon substrate in addition to controlling the substrate thickness of the sensor. We investigated the...
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Article
Correlation between the Size of Microlenses and the Outcoupling Efficiency of Organic Light Emitting Diodes Studied by Finite-Difference Time-Domain Simulation
Outcoupling efficiency (OCE) of organic light emitting diodes (OLEDs) with four different microlens arrays was studied by two-dimensional finite-difference time-domain simulation to find out correlation betwee...
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Article
Development of a Theoretical Model for Strong-Field Photoemission in a 2-Dimensional Conducting Sheet
We propose a theoretical model simulating ultrafast electron emission at the edge of a two-dimensional conducting sheet due to a strong field tunneling process in the presence of a static electric field. Under...
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Article
A Simulation Study for Field Enhancement due to Multiresonant Localized Surface Plasmon Excitation in the truncated Octahedral Gold Nanoparticle Arrays
We theoretically demonstrates large field enhancement at the close-packed, truncated octahedral gold nanoparticle array by using a finite difference time domain method. A multiple peak at the visible and near ...
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Article
A simulation study of localized surface plasmon polariton formation inside a truncated octahedral gold wireframe nanostructure
We present the electromagnetic field distribution inside and outside a gold nano wireframe with a truncated octahedral shape, using the finite difference time domain method. Our findings show the formation of ...
