Results 11 to 20 of about 54,007 (241)

Giant near-field nonlinear electrophotonic effects in an angstrom-scale plasmonic junction [PDF]

open access: yesNature Communications
Plasmons facilitate a strong confinement and enhancement of near-field light, offering exciting opportunities to enhance nonlinear optical responses at the nanoscale.
Shota Takahashi   +3 more
doaj   +2 more sources

Broadband Near-Field Near-Infrared Spectroscopy and Imaging with a Laser-Driven Light Source

open access: yesPhotonics, 2022
The scattering-type scanning near-field optical microscope (s-SNOM) has become a powerful imaging and nano-spectroscopy tool, which is widely used in the characterization of electronic and photonic devices, two-dimensional materials and biomolecules ...
Chen Nan, Wang Yue, Xia Yang, Liu Tao
doaj   +1 more source

Scanning Probe Microscopy as a Tool for Investigation of Biomaterials

open access: yesAdvances in Electrical and Electronic Engineering, 2012
Super-microscopic techniques like scanning tunnelling microscopy, atomic force microscopy or scanning near-field optical microscopy allows investigate micro- and/or nano-scale surfaces and structures.
Veronika Novotna   +3 more
doaj   +1 more source

Wavelength Dependent Graphene Oxide-Based Optical Microfiber Sensor for Ammonia Gas

open access: yesSensors, 2021
Ammonia detection in ambient air is critical, given its implication on the environment and human health. In this work, an optical fiber tapered to a 20 µm diameter and coated with graphene oxide was developed for absorbance response monitoring of ammonia
Saad Hayatu Girei   +5 more
doaj   +1 more source

Transverse intensity at the tight focus of a second-order cylindrical vector beam

open access: yesКомпьютерная оптика, 2021
In this paper, an effect of a reverse energy flow at the focus of a second-order cylindrical vector beam which passed through amplitude zone plate was investigated with a scanning near-field optical microscope.
E.S. Kozlova   +4 more
doaj   +1 more source

Microstructure and Fretting Wear Properties of CuNiIn Coating Prepared by Cold Spraying on Surface of TC4 Titanium Alloy [PDF]

open access: yesCailiao Baohu, 2022
In order to promote the application of cold spray technology in the field of aviation protective coatings, this work prepared CuNiIn coating on surface of TC4 titanium alloy via cold spray with nitrogen technology.
LI Hai - sheng, LIU Kun, LI Wen - ya, WU Dong, YAN Hua
doaj   +1 more source

Formation and Characterization of Hole Nanopattern on Photoresist Layer by Scanning Near-Field Optical Microscope

open access: yesNanomaterials, 2019
Patterning of lines of holes on a layer of positive photoresist SX AR-P 3500/6 (Allresist GmbH, Strausberg, Germany) spin-coated on a quartz substrate is carried out by using scanning near-field optical lithography.
Agata Roszkiewicz   +3 more
doaj   +1 more source

Periodic structures on liquid-phase smectic A, nematic and isotropic free surfaces

open access: yesBeilstein Journal of Nanotechnology, 2018
The free boundary of smectic A (SmA), nematic and isotropic liquid phases were studied using a polarized optical microscope, an interferometric surface structure analyzer (ISSA), an atomic force microscope (AFM) and a scanning near-field optical ...
Anna N. Bagdinova   +5 more
doaj   +1 more source

Topological extraordinary optical transmission

open access: yesPhysical Review Research, 2022
Τhe incumbent technology for bringing light to the nanoscale, the near-field scanning optical microscope, has notoriously small throughput efficiencies of the order of 10^{4} −10^{5}, or less.
K. Baskourelos   +6 more
doaj   +1 more source

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