Results 211 to 220 of about 14,946 (248)
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Polymeric waveguide wavelength filters using electron-beam direct writing
Applied Physics Letters, 2001Polymeric waveguide wavelength filters based on a low-loss negative tone epoxy Novolak resin polymer have been fabricated using electron-beam direct writing. Both the waveguides and the gratings were exposed simultaneously, which effectively eliminate the alignment errors that can be generated during fabrication. A first-order Bragg grating around 1550
W. H. Wong, E. Y. B. Pun
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Writing with Mass-Selected Ions Using a Dynamic Field Wien Filter
Journal of the American Society for Mass SpectrometryWe have designed and constructed a low-cost Wien filter based on strong permanent magnets and integrated it into an ion soft-landing instrument to enable parallel deposition as well as one- and two-dimensional surface patterning of mass-selected ions using dynamic fields. We show the capabilities of this device for separating ions from a multicomponent
Michael F. Espenship, Julia Laskin
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Laser-Beam Periodic-Dot Writing For Fabrication of Ti:LiNbO3 Waveguide Wavelength Filters
Integrated Photonics Research, 1993A new laser beam (LB) writing technique that can provide dot lines of a nearly 10-?m period in photoresist, with a period fluctuation of less than 4 nm, is proposed and demonstrated. The dot period is also controllable with an accuracy of the order of a nanometer.
M, Haruna +3 more
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Simultaneous exposure of filter gratings and waveguides by direct write electron-beam lithography
Microelectronic Engineering, 1997Abstract A novel process enabling the simultaneous electron-beam exposure of different types of structures is presented, illustrated by the synchronous generation of filter gratings and waveguides. Optimized results for a precise adjustment of the interface waveguide-grating are shown, as well as the necessity for proximity correction achieved by ...
R. Steingrüber, M. Hamacher
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Direct Laser Writing of Micro–Nano Filters Based on Three-Photon Polymerization
ACS Applied Materials & InterfacesDirect laser writing (DLW) enables the manufacturing of functional quantum dot (QD)-polymer nanostructures with the special performance desired for technological applications. However, most papers fabricate the QD-polymer photoresist based on the principle of two-photon polymerization using laser wavelengths of 750-800 nm, which cannot effectively ...
Jiubin Jue, Zongsong Gan
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Volume holographic wavelength filters based on transmissive-writing and orthogonal-readout scheme
SPIE Proceedings, 2007Owing to the high Bragg selectivity and capacity of multiple recording, volume holography has been widely investigated for devices such as wavelength filters in wavelength-division multiplexing fiber communication systems in recent years. Transmission-Writing and Orthogonal-Readout scheme (TWOR) has been proposed for making wavelength filters in ...
Xiaodan Zheng +3 more
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Adaptive Impedance Control Method for Industrial Manipulator Writing Based on Kalman Filter
2018 37th Chinese Control Conference (CCC), 2018This paper presents an adaptive impedance control method based on Kalman filter to write Chinese characters for industrial manipulator. Kalman filter is used to estimate the actual contact force. For safety, the contact force is controlled to maintain constant using the adaptive impedance control method.
Qidan Zhu +3 more
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Journal of forensic sciences, 2011
Thin layer chromatography (TLC) is a scientific methodology that can be used to compare and characterize ink formulations. Occasionally, when evaluating chromatographic profiles on a TLC plate with ambient light, different ink formulations, or the same inks from different batches, may appear indistinguishable.
Stephanie, Houlgrave +2 more
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Thin layer chromatography (TLC) is a scientific methodology that can be used to compare and characterize ink formulations. Occasionally, when evaluating chromatographic profiles on a TLC plate with ambient light, different ink formulations, or the same inks from different batches, may appear indistinguishable.
Stephanie, Houlgrave +2 more
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Fabrication and evaluation of 3D-electric micro filters using proton beam writing
Microelectronic Engineering, 2009Dielectrophoresis (DEP) is a phenomenon involving translational movement of a polarizable object toward the direction of the electric field gradient. DEP has been used for electrical trapping of food poisoning microbes such as Escherichia coli (E. coli).
Yusuke Furuta +6 more
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Electronics and Communications in Japan (Part II: Electronics), 1988
AbstractWriting and reconstruction of holograms on the amorphous magnetic films have been studied and results of matched filtering of imagery by using the hologram filter have been reported. The resolving power of imagery on thin films of GdTbFe and TbFe is 1800 line pairs/mm.
Mitsuhito Matsubara +2 more
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AbstractWriting and reconstruction of holograms on the amorphous magnetic films have been studied and results of matched filtering of imagery by using the hologram filter have been reported. The resolving power of imagery on thin films of GdTbFe and TbFe is 1800 line pairs/mm.
Mitsuhito Matsubara +2 more
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