Stepwise chirping of chiral sculptured thin films for Bragg bandwidth enhancement
نویسندگان
چکیده
منابع مشابه
architecture and engineering of nanoscale sculptured thin films and determination of their properties
چکیده ندارد.
15 صفحه اولSculptured Thin Films: Accomplishments and Emerging Uses
Sculptured thin films (STFs) are nano–engineered materials whose columnar morphology is tailored to elicit desired optical responses upon excitation. Two canonical forms of STFs have been identified. Linear constitutive relations for general STFs as unidirectionally nonhomogeneous (continuously or piecewise uniformly) and locally bianisotropic continuums are presented, along with a 4×4 matrix o...
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The durations and average speeds of ultrashort optical pulses transmitted through chiral sculptured thin films (STFs) were calculated using a finite–difference time–domain algorithm. Chiral STFs are a class of nanoengineered materials whose microstructure comprises parallel helicoidal nanowires grown normal to a substrate. The nanowires are ∼10–300 nm in diameter and ∼1–10 μm in length. Duratio...
متن کاملChiral atomically thin films.
Chiral materials possess left- and right-handed counterparts linked by mirror symmetry. These materials are useful for advanced applications in polarization optics, stereochemistry and spintronics. In particular, the realization of spatially uniform chiral films with atomic-scale control of their handedness could provide a powerful means for developing nanodevices with novel chiral properties. ...
متن کاملBiological reduction of nanoengineered iron(III) oxide sculptured thin films.
Sculptured thin films (STFs) are assemblies of nominally identical, parallel nanowires with tailored shapes such as chevrons and spirals. A series of iron(lll) STFs were produced with varied crystallinity (from hematite toferrihydrite) and nanowire shapes (slanted columnar, clockwise helical, and counterclockwise helical). When the dissimilatory metal-reducing bacterium Shewanella putrefaciens ...
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ژورنال
عنوان ژورنال: Microwave and Optical Technology Letters
سال: 2001
ISSN: 0895-2477,1098-2760
DOI: 10.1002/1098-2760(20010305)28:5<323::aid-mop1030>3.3.co;2-8