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Burke, P. J.; Schoelkopf, R. J.; Prober, D. E.; Skalare, A.; Karasik, B. S.; Gaidis, M. C.; McGrath, W. R.; Bumble, B.; LeDuc, H. G. |
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Title |
Mixing and noise in diffusion and phonon cooled superconducting hot-electron bolometers |
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Journal Article |
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1999 |
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J. Appl. Phys. |
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85 |
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3 |
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1644-1653 |
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HEB, mixer |
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0021-8979 |
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556 |
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Cherednichenko, S.; Drakinskiy, V.; Baubert, J.; Krieg, J.-M.; Voronov, B.; Gol'tsman, G.; Desmaris, V. |
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Title |
Gain bandwidth of NbN hot-electron bolometer terahertz mixers on 1.5 μm Si3N4 / SiO2 membranes |
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Journal Article |
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2007 |
Publication |
J. Appl. Phys. |
Abbreviated Journal |
J. Appl. Phys. |
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Volume |
101 |
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12 |
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124508 (1 to 6) |
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Keywords |
HEB, mixer, membrane |
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The gain bandwidth of NbN hot-electron bolometer terahertz mixers on electrically thin Si3N4/SiO2 membranes was experimentally investigated and compared with that of HEB mixers on bulk substrates. A gain bandwidth of 3.5 GHz is achieved on bulk silicon, whereas the gain bandwidth is reduced down to 0.6–0.9 GHz for mixers on 1.5 μm Si3N4/SiO2 membranes. We show that application of a MgO buffer layer on the membrane extends the gain bandwidth to 3 GHz. The experimental data were analyzed using the film-substrate acoustic mismatch approach. |
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0021-8979 |
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560 |
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Cherednichenko, S.; Drakinskiy, V.; Baubert, J.; Lecomte, B.; Dauplay, F.; Krieg, J. M.; Delorme, Y.; Feret, A.; Hübers, H. W.; Semenov, A. D.; Gol'tsman, G. N. |
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Title |
2.5 THz multipixel heterodyne receiver based on NbN HEB mixers |
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Conference Article |
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2006 |
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Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
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6275 |
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62750I (1 to 11) |
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Keywords |
HEB, mixer, membrane |
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A 16 pixel heterodyne receiver for 2.5 THz has been developed based on NbN superconducting hot-electron bolometer (HEB) mixers. The receiver uses a quasioptical RF coupling approach where HEB mixers are integrated into double dipole antennas on 1.5 µm thick Si3N4/SiO2 membranes. Spherical mirrors (one per pixel) and backshort distance from the antenna have been used to design the output mixer beam profile. The camera design allows all 16 pixel IF readout in parallel. The gain bandwidth of the HEB mixers on Si3N4/SiO2 membranes was found to be 0.7÷0.9 GHz, which is much smaller than for similar devices on silicon. Application of buffer layers and use of alternative types of membranes (e.g. silicon-on-insulator) is under investigation. |
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561 |
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Dickert, F. L.; Haunschild, A.; Kuschow, V.; Reif, M.; Stathopulos, H. |
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Title |
Mass-sensitive detection of solvent vapors. Mechanistic studies on host-guest sensor principles by FT-IR spectroscopy and BET adsorption analysis |
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Year |
1996 |
Publication |
Analytical Chemistry |
Abbreviated Journal |
Anal. Chem. |
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68 |
Issue |
6 |
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1058-1061 |
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supramolecular recognition, quartz crystal microbalance, QCM, surface acoustic wave, SAW, mass-sensitive sensor, detector, calixarenes, MM3 force field, Brunauer, Emmett and Teller theory, BET |
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Chemical sensors, based on highly mass sensitive QMB or SAW devices, coated with thin layers of calixarenes, enable the detection of organic solvent vapours, especially halogenated or aromatic hydrocarbons, down to a few ppm. Force field calculations allow the tailoring of these sensor materials seeing that the predicted interaction energies between the host molecules and a large variety of analytes are linearly correlated to the measured sensor effects. These correlations and also BET adsorption analysis prove the analyte recognition properties of these calixarene coatings to be mainly based on host/guest inclusion principles. |
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0003-2700 |
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562 |
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Dickert, Franz L. |
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Christoph A. Schalley (Ed.): Analytical methods in supramolecular chemistry |
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Journal Article |
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2007 |
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Analytical and Bioanalytical Chemistry |
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Anal Bioanal Chem |
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Volume |
389 |
Issue |
7-8 |
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2039-2040 |
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supramolecular recognition |
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This is a review of book. |
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1618-2642 |
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563 |
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