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Showing 13 to 24 of 480 entries
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Chiral particle separation by a nonchiral microlattice.

Physical review letters

Bogunovic L, Fliedner M, Eichhorn R, Wegener S, Regtmeier J, Anselmetti D, Reimann P.
PMID: 23005274
Phys Rev Lett. 2012 Sep 07;109(10):100603. doi: 10.1103/PhysRevLett.109.100603. Epub 2012 Sep 06.

We conceived a model experiment for a continuous separation strategy of chiral molecules (enantiomers) without the need of any chiral selector structure or derivatization agents: Microparticles that only differ by their chirality are shown to migrate along different directions...

Role of the carrier-envelope offset phase of few-cycle pulses in nonperturbative resonant nonlinear optics.

Physical review letters

Mücke OD, Tritschler T, Wegener M, Morgner U, Kärtner FX.
PMID: 12225122
Phys Rev Lett. 2002 Sep 16;89(12):127401. doi: 10.1103/PhysRevLett.89.127401. Epub 2002 Aug 28.

We study the influence of the carrier-envelope offset phase of few-cycle pulses on nonperturbative resonant extreme nonlinear optics in a semiconductor. If the Rabi frequency becomes comparable to the light frequency, the different Rabi sidebands interfere around twice the...

Electric poling and electromechanical characterization of 0.1-mm-thick sensor films and 0.2-mm-thick cable layers from piezoelectric poly(vinylidene fluoride-trifluoroethylene).

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

Wegener M, Gerhard-Multhaupt R.
PMID: 12894925
IEEE Trans Ultrason Ferroelectr Freq Control. 2003 Jul;50(7):921-31. doi: 10.1109/tuffc.2003.1214511.

Piezoelectric polymers have been proposed for many sensor and actuator applications. Among these, piezoelectric polymer films with thicknesses between several tens and a few hundreds of micrometers as well as coaxial cables with piezoelectric polymer layers are highly suitable...

The kinetic of the oxidation of InSn48.

Analytical and bioanalytical chemistry

Preuss A, Adolphi B, Wegener T.
PMID: 15048507
Anal Bioanal Chem. 1995 Oct;353(3):399-402. doi: 10.1007/s0021653530399.

The oxidation of InSn48 has been investigated at partial pressures between 10(-8) Pa and 10(+4) Pa over a temperature range from 22 ( degrees )C to 250 ( degrees )C with different analytical methods. The oxide film contains a...

Model system for a one-dimensional magnetic photonic crystal.

Physical review letters

Linden S, Decker M, Wegener M.
PMID: 17026307
Phys Rev Lett. 2006 Aug 25;97(8):083902. doi: 10.1103/PhysRevLett.97.083902. Epub 2006 Aug 25.

We fabricate and characterize one-dimensional magnetic (rather than dielectric) photonic crystals for the first time. Our model system is a one-dimensional periodic lattice of gold-wire pairs. Each pair can be viewed as a magnetic coil with two slits and...

Determining the carrier-envelope offset frequency of 5-fs pulses with extreme nonlinear optics in ZnO.

Optics letters

Mücke OD, Tritschler T, Wegener M, Morgner U, Kärtner FX.
PMID: 18033463
Opt Lett. 2002 Dec 02;27(23):2127-9. doi: 10.1364/ol.27.002127.

We excite ZnO samples with two-cycle optical pulses directly from a mode-locked oscillator with average powers of several tens of milliwatts. The emitted light reveals peaks at the carrier-envelope offset frequency f(ø) and at 2f(ø) in the radio-frequency spectra....

Utilin, the old Friedmann remedy.

Hippokrates

WEGENER L.
PMID: 18879280
Hippokrates. 1948 Jul;19(7):206-8.

No abstract available.

Magnetic response of metamaterials at 100 terahertz.

Science (New York, N.Y.)

Linden S, Enkrich C, Wegener M, Zhou J, Koschny T, Soukoulis CM.
PMID: 15550664
Science. 2004 Nov 19;306(5700):1351-3. doi: 10.1126/science.1105371.

An array of single nonmagnetic metallic split rings can be used to implement a magnetic resonance, which arises from an inductor-capacitor circuit (LC) resonance, at 100-terahertz frequency. The excitation of the LC resonance in the normal-incidence geometry used in...

Negative-index metamaterial at 780 nm wavelength.

Optics letters

Dolling G, Wegener M, Soukoulis CM, Linden S.
PMID: 17167581
Opt Lett. 2007 Jan 01;32(1):53-5. doi: 10.1364/ol.32.000053.

We further miniaturize a recently established silver-based negative-index metamaterial design. By comparing transmittance, reflectance, and phase-sensitive time-of-flight experiments with theory, we infer a real part of the refractive index of -0.6 at a 780 nm wavelength--which is visible in...

Express Rates or Animals?.

Science (New York, N.Y.)

Hegener W.
PMID: 17737264
Science. 1953 Feb 27;117(3035):234. doi: 10.1126/science.117.3035.234-a.

No abstract available.

Realization of a three-functional-layer negative-index photonic metamaterial.

Optics letters

Dolling G, Wegener M, Linden S.
PMID: 17392918
Opt Lett. 2007 Mar 01;32(5):551-3. doi: 10.1364/ol.32.000551.

We modify a recently theoretically suggested multilayer negative-index photonic metamaterial design and fabricate corresponding structures with up to three functional layers (seven actual layers) for the first time to our knowledge. Measured transmittance and reflectance spectra agree well with...

Effective visualization of short routes.

IEEE transactions on visualization and computer graphics

Degener P, Schnabel R, Schwartz C, Klein R.
PMID: 18988996
IEEE Trans Vis Comput Graph. 2008 Nov-Dec;14(6):1452-8. doi: 10.1109/TVCG.2008.124.

In this work we develop a new alternative to conventional maps for visualization of relatively short paths as they are frequently encountered in hotels, resorts or museums. Our approach is based on a warped rendering of a 3D model...

Showing 13 to 24 of 480 entries