near-field optical methods
Development of a controlled environment near-field optical microscope for organic thin film studies
... direct optical monitoring of the ...Non-optical methods are much more conve- nient in this ...the optical fiber is glued onto a tuning fork which is in turn af- fixed vertically onto the ...
9
Apertureless near field optical microscopy for fluorescence imaging
... The utility function written to open a file from a named dataset for a given line and channel number is stripttfile ; it is listed here along with the methods it calls. The data saved in the file may contain some ...
142
Imaging of InGaN inhomogeneities using visible apertureless. near-field scanning optical microscope
... probe near-field microscopy. We observe variations in the optical signal from grains as small as 30 nm in ...diameter. Near-field imaging of the InGaN film reveal that some islands ...
26
Comparative scanning near-field optical microscopy studies of plasmonic nanoparticle concepts
... and near-field simulations ...far field and discussed by looking at different wavelengths to compare spectral data with different ...The near field of the nanoparticles can be ...
10
Apertureless scanning near-field optical microscopy: a comparison between homodyne and heterodyne approaches
... background optical fields that are not re- lated to the field scattered by the tip end can be ...Several methods have been proposed to extract the signal issued from the local interaction between the ...
11
Optical Near Field Study of Ag Nanowires by the Differential Method
... diffracted field can not be computed near the surface vicinity. For near-field, on sub-wavelength features, it is necessary to solve the full vector form of Maxwell’s equations under suitable ...
8
Optical forces near a nanoantenna
... The optical confinement of microscopic and nanoscopic objects is a rapidly developing field of optical trapping with many applications in physics, biology and chemistry ...general optical ...
12
Magneto-Optic Spectroscopy and Near-Field Optical Coupling in Nanoparticle Composite Materials
... Discrete-dipole approximation (DDA) calculations have been used to determine the scattering and absorption of a large variety of nanometer sized structures and geometries. The DDA replaces the structures with collections ...
63
Near and Far Field Optical Response of Eccentric Nanoshells
... Several theoretical approaches have been utilized to de- scribe the light absorption and scattering by metallic nanostructures. For instance, the analysis of LSPR prop- erties of metallic nanoparticles with spherical ...
7
Measurement of the local optical phase and amplitude in photonic devices using scanning near field microscopy
... The most exploited method of height regulation used in SNOM is the shear force method. Of all the methods it is the least stringent on the properties of the sample. The method was first proposed by Betzig et al. ...
178
Absorbance Modulation Optical Lithography: Simulating the Performance of an Adaptable Absorbance Mask in the Near Field
... Although the results presented here concentrate on transmission through sub-wavelength features it is important to note that significant changes occur as the grating period is increased, in particular the performance of ...
262
Study of shear force as a distance regulation mechanism for scanning near field optical microscopy
... Fig. 1 ! . It consists of a 20 W CO 2 laser for heating the fiber, and a 90 W dc servomotor for subsequent stretching. The pulling mechanism incorporates a feedback system based on an optical encoder for ...
5
Polarization-modulation near-field optical microscope for quantitative local dichroism mapping
... For our measurements we have used a special dichroic sample, 15 made by diluting a high-efficiency fluorescent chromophore, a terthiophene derivative, 16 in ultrahigh mo- lecular weight polyethylene and by subsequent ...
6
The application of scanning near field optical imaging to the study of human sperm morphology
... SNOM optical transmission image (Figure 4D) shows that along the longitudinal axis the midpiece region appears brighter than the rest of the principal part of the ...in optical contrast is indi- cated by ...
11
Marine optics: field radiometry
... reduce the background light, and an adjustable aperture is used to optimize the size of the light cone illuminating the diffuser. All the various components of the mea- surement system are installed on a vertical ...
280
Intragrain Defect Characterization Of Solar Grade Silicon Using Near-Field Scanning Optical Microscopy
... I would first like to thank my advisory committee chair, Dr. George Rozgonyi, for giving me the opportunity to work in his group. He has been exceedingly patient on this time intensive project, built from the ground up. ...
130
Evanescent wave assist features for optical projection lithography
... Other notable work pertains to coupling into and out of near fields using gratings. This further reinforces the reciprocity first noted by Leviatan. Fong and Hui used identical surface relief gratings on the top ...
194
Learning, Moving, And Predicting With Global Motion Representations
... as optical flow) or simple, rigid global representations (such as camera ...These methods are useful, but they are difficult to estimate reliably and limited in their applicability to real-world settings, ...
137
Apertureless near-field optical microscopy: Differences between heterodyne interferometric and non-interferometric images.
... the near fields will be of interest, in particular the near field enhancement, ...electric field module in the proximity of the tip apex normalized to the module of the incident electric ...
18
Coca López, Nicolás (2018): Confocal and antenna-enhanced microscopy and spectroscopy of graphene. Dissertation, LMU München: Fakultät für Chemie und Pharmazie
... simultaneous near-field Raman, photocurrent and topography images were recorded on metal-graphene-metal ...photocurrent near-field contribution was observed from the steeper slope of the ...
134