Zobrazeno 1 - 10
of 95
pro vyhledávání: '"J. Spieler"'
Publikováno v:
Journal of Clinical Oncology. 28:e75-e78
Autor:
R. Blache, Werner Prost, S. Neumann, Peter Kiesel, J. Spieler, Franz-Josef Tegude, Gottfried H. Döhler
Publikováno v:
Journal of Crystal Growth. 248:158-162
Ga/sub x/In/sub 1-x/As/sub y/P/sub 1-y/ layers grown by LP-MOVPE at reduced growth temperatures exhibit a high degree of ordering. This effect is used to fabricate polarization dependent devices in the optical fibre wavelength regime. A nongaseous so
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 13:806-810
We present a concept for a highly integrated opto-electronic switch that is sensitive to the wavelength or linear polarization, respectively, of the incident light but operates independent of the optical input power. First demonstration devices show
Publikováno v:
Materials Science and Engineering: B. 88:307-311
Spontaneous self-ordering in semiconductor alloys is not only very interesting from the fundamental point of view but can also be exploited for device applications. We report on monolithically integrated opto-electronic switching devices with high ph
Autor:
R. Stubner, J. Krauss, Peter Kiesel, O. Pankratov, M. Moser, G. H. Döhler, T. Kippenberg, Roland Winkler, J. Spieler
Publikováno v:
Physical Review B. 60:4446-4449
We have studied a series of single variant-ordered ${\mathrm{GaInP}}_{2}$ bulk samples by measuring the Franz-Keldysh absorption. We observe a high-energy transition approximately 0.4 eV above the band gap, which originates from the back-folded condu
Autor:
J. Kraus, Peter Kiesel, Franz-Josef Tegude, P. Velling, G. H. Döhler, J. Spieler, Werner Prost, T. Kippenberg
Publikováno v:
Applied Physics Letters. 76:88-90
Using electroabsorption measurements, we have studied the effects of atomic superlattice ordering on the electronic band structure of InGaAs for different growth parameters. We have observed ordering-induced polarization anisotropy, valence-band spli
Publikováno v:
The Journal of Experimental Medicine
Human PMN release lysosomal enzymes (beta-glucuronidase, acid phosphatase) when exposed to immune complexes, but do not release cytoplasmic LDH. The cells remain viable, and failure of LDH to appear in supernatants is not due to selective absorption
Autor:
J. Spieler, E. Greger, Peter Kiesel, J. Krauss, T. Kippenberg, Michael Moser, Gottfried H. Döhler
Publikováno v:
IEEE Photonics Technology Letters. 11:427-429
We present a polarization sensitive device showing an adjustable bistable switching behavior. It exhibits switching contrasts of up to 30 dB, electrooptical gains of 40 dB, and an angle hysteresis which can be tuned between 0/spl deg/ and 60/spl deg/
Publikováno v:
Clinical Infectious Diseases. 56:1353-1354
Autor:
J Spieler
Publikováno v:
International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics. 67
This summary and historical perspective relates exclusively to contraceptive research and development during the period between the early 1970s and the present. This paper covers the raison d'etre for public/private-sector collaboration in this field