![]() Marso, Michel ![]() in Acta Physica Polonica A (2005), VOL 107; PART 1 We report on the fabrication and high-frequency performance of our photodetectors and photomixers based on freestanding low-temperature-grown GaAs. The MBE-grown low-temperature GaAs layers are lifted ... [more ▼] We report on the fabrication and high-frequency performance of our photodetectors and photomixers based on freestanding low-temperature-grown GaAs. The MBE-grown low-temperature GaAs layers are lifted from the native GaAs substrate and transferred on top of variety of host substrates. The freestanding devices exhibit breakdown electrical ¯elds above 200 kV/cm and dark currents below 3 £ 10¡7 A at 100 V bias. Device photoresponse shows 0.55 ps wide electrical transients with voltage amplitudes up to 1.3 V, measured using an electro-optical sampling technique with 100 fs wide laser pulses. Photomixing experiments at 460 GHz yield a 9 times higher output power for the freestanding device on Si/SiO2 host substrate compared to the native substrate. [less ▲] Detailed reference viewed: 94 (0 UL)![]() ; ; et al in Journal of Physics: Condensed Matter (2020), 32(32), 324001 The isothermal crystallization times and critical cooling rates of the liquid phase are determined for the two bulk metallic glass forming alloys Au49Ag5.5Pd2.3Cu26.9Si16.3 and Au51.6Ag5.8Pd2.4Cu20.2Ga6 ... [more ▼] The isothermal crystallization times and critical cooling rates of the liquid phase are determined for the two bulk metallic glass forming alloys Au49Ag5.5Pd2.3Cu26.9Si16.3 and Au51.6Ag5.8Pd2.4Cu20.2Ga6.7Si13.3 by using fast differential scanning calorimetry, covering the whole timescale of the crystallization event of the metallic melt. In the case of Au49Ag5.5Pd2.3Cu26.9Si16.3, a typical crystallization nose was observed, whereas for the Au51.6Ag5.8Pd2.4Cu20.2Ga6.7Si13.3, a more complex crystallization behavior with two distinct crystallization noses was found. Even for the complex crystallization behavior of the Au51.6Ag5.8Pd2.4Cu20.2Ga6.7Si13.3 alloy it is shown that the minimal isothermal nose time does allow for a quantification of the macroscopic critical thickness. It is discussed in contrast to the critical cooling rate, which is found to allow less exact calculations of the critical thickness and thus does not correlate well with the critical cooling rate from macroscopic experiments. Additionally the crystallization data of Au49Ag5.5Pd2.3Cu26.9Si16.3 was modeled using classical nucleation theory with the Johnson–Mehl–Avrami–Kolmogorov (JMAK) equation, enabling a determination of the interfacial energy. [less ▲] Detailed reference viewed: 216 (25 UL)![]() ; ; et al in Advanced Science (2020) Detailed reference viewed: 27 (0 UL)![]() Kisseleff, Steven ![]() ![]() ![]() in IEEE International Conference on Communications (ICC), B5G-URLLC Workshop, Shanghai, May 2019 (2019, May 20) Large communication networks, e.g. Internet of Things (IoT), are known to be vulnerable to the co-channel interference from simultaneous transmissions. In the recent time, this problem has been ... [more ▼] Large communication networks, e.g. Internet of Things (IoT), are known to be vulnerable to the co-channel interference from simultaneous transmissions. In the recent time, this problem has been extensively studied in various contexts. Due to a potentially very long duty cycle, orthogonal multiple access techniques are not well suited for such schemes. Instead, random medium access (RMA) seems promising, since it guarantees a lower bound for the network throughput even in presence of an infinite number of simultaneous transmissions while reducing the average length of the duty cycle. Such an RMA scheme is based on transmission of short data packets with unknown scheduling. Of course, a reliable symbol detection for this type of communication is very challenging not only due to a large amount of interference from the adjacent nodes, but also because of the uncertainty related to the presence or absence of overlapping packets. Interestingly, with increasing number of network nodes also the amount of energy, which can be harvested from the received signal, increases. This is especially beneficial for powering of a relay device, which may utilize the energy for further information processing and retransmission. In this paper, we address the design of a simultaneous information and power transfer scheme based on unscheduled short packet transmissions for ultrareliable communication. [less ▲] Detailed reference viewed: 91 (8 UL)![]() ![]() Maccaferri, Nicolò ![]() in Nature Communications (2015), 6 Systems allowing label-free molecular detection are expected to have enormous impact on biochemical sciences. Research focuses on materials and technologies based on exploiting localized surface plasmon ... [more ▼] Systems allowing label-free molecular detection are expected to have enormous impact on biochemical sciences. Research focuses on materials and technologies based on exploiting localized surface plasmon resonances in metallic nanostructures. The reason for this focused attention is their suitability for single-molecule sensing, arising from intrinsically nanoscopic sensing volume and the high sensitivity to the local environment. Here we propose an alternative route, which enables radically improved sensitivity compared with recently reported plasmon-based sensors. Such high sensitivity is achieved by exploiting the control of the phase of light in magnetoplasmonic nanoantennas. We demonstrate a manifold improvement of refractometric sensing figure-of-merit. Most remarkably, we show a raw surface sensitivity (that is, without applying fitting procedures) of two orders of magnitude higher than the current values reported for nanoplasmonic sensors. Such sensitivity corresponds to a mass of ~ 0.8 ag per nanoantenna of polyamide-6.6 (n=1.51), which is representative for a large variety of polymers, peptides and proteins. [less ▲] Detailed reference viewed: 86 (10 UL)![]() ![]() ; ; Hanesch, Ulrike ![]() in Zeitschrift für Kardiologie (1993), 82(Suppl. 3), 34 Detailed reference viewed: 27 (0 UL)![]() Schreiber, Catherina ![]() in Saargeschichte|n (2013), (1), 24-30 Detailed reference viewed: 93 (3 UL)![]() Roelens, Nathalie ![]() Presentation (2017) Detailed reference viewed: 63 (1 UL)![]() Küpper, Achim ![]() in http ://www.arte-tv.com (2005) Detailed reference viewed: 59 (2 UL)![]() Heimböckel, Dieter ![]() in Mein, Georg; Amann, Wilhelm; Parr, Rolf (Eds.) Periphere Zentren oder zentrale Peripherien? Kulturen und Regionen Europas zwischen Globalisierung und Regionalität (2008) Detailed reference viewed: 69 (1 UL)![]() ![]() Margue, Michel ![]() in Nolden, Reiner (Ed.) Balduin von Luxemburg. Erzbischof und Kurfürst von Trier (1308-1354). Vorträge eines Kolloquiums in Trier im Juni 2008 (2008) Detailed reference viewed: 112 (0 UL)![]() ; Heinz, Andreas ![]() ![]() Book published by De Gruyter Oldenbourg - 4 (2019) Das Buch vermittelt theoretische Grundlagen und praxisnahe Kenntnisse zu wissenschaftlichen Umfragen. Mit Hilfe dieser Kenntnisse kann der Leser Umfragen sowohl kritisch beurteilen als auch Fragebögen ... [more ▼] Das Buch vermittelt theoretische Grundlagen und praxisnahe Kenntnisse zu wissenschaftlichen Umfragen. Mit Hilfe dieser Kenntnisse kann der Leser Umfragen sowohl kritisch beurteilen als auch Fragebögen selbst nach den gültigen wissenschaftlichen Standards erstellen. Damit wird dem in den letzten Jahren zunehmenden Problem mangelnder Gültigkeit und Zuverlässigkeit von Befragungsdaten entgegengewirkt. Der Schwerpunkt liegt auf Hinweisen zur Formulierung von Fragen und zur Konstruktion von Fragebögen, daneben werden aber auch viele andere Probleme behandelt, wie z.B. Fragen des Forschungsdesigns oder der Planung und Durchführung der Feldarbeit. Neben postalischen, persönlichen und telefonischen Befragungen werden auch Online-, Mobile und Mixed-Mode-Befragungen erläutert. Das Buch schließt die Lücke zwischen allgemeinen Lehrbüchern zur empirischen Sozialforschung einerseits und speziellen Lehr- und Handbüchern zur Datenanalyse andererseits. [less ▲] Detailed reference viewed: 1537 (14 UL)![]() ; Heinz, Andreas ![]() ![]() Book published by Oldenbourg Wissenschaftsverlag - 3 (2013) Das Buch vermittelt theoretische Grundlagen und praxisnahe Kenntnisse zu wissenschaftlichen Umfragen. Mit Hilfe dieser Kenntnisse soll der Leser Umfragen sowohl kritisch beurteilen als auch selbst nach ... [more ▼] Das Buch vermittelt theoretische Grundlagen und praxisnahe Kenntnisse zu wissenschaftlichen Umfragen. Mit Hilfe dieser Kenntnisse soll der Leser Umfragen sowohl kritisch beurteilen als auch selbst nach den gültigen wissenschaftlichen Standards durchführen können. Damit soll dem in den letzten Jahren zunehmenden Problem mangelnder Gültigkeit und Zuverlässigkeit von Befragungsdaten entgegengewirkt werden. Der Schwerpunkt liegt auf Hinweisen zur Formulierung von Fragen und zur Konstruktion von Fragebögen, daneben werden aber auch viele andere Probleme behandelt, wie z.B. Fragen des Forschungsdesigns oder der Planung und Durchführung der Feldarbeit. Neben postalischen, persönlichen und telefonischen Befragungen werden in der zweiten Auflage auch Online-Befragungen behandelt. Das Buch soll damit die Lücke zwischen allgemeinen Lehrbüchern zur empirischen Sozialforschung einerseits und speziellen Lehr- und Handbüchern zur Datenanalyse andererseits schließen. [less ▲] Detailed reference viewed: 1123 (56 UL)![]() ![]() ; Meyers, Christian ![]() Scientific Conference (2007, September) Detailed reference viewed: 36 (0 UL)![]() ; Steffgen, Georges ![]() Book published by Hogrefe (1999) Detailed reference viewed: 266 (0 UL)![]() Steffgen, Georges ![]() in Benoy, Charles (Ed.) COVID-19 Ein Virus nimmt Einfluss auf unsere Psyche (2020) Detailed reference viewed: 170 (4 UL)![]() Steffgen, Georges ![]() in Benoy, Charles (Ed.) COVID-19 - Ein Virus nimmt Einfluss auf unsere Psyche (2021) Detailed reference viewed: 42 (1 UL)![]() ; Steffgen, Georges ![]() Book published by Brain Shuppan (2004) Detailed reference viewed: 77 (0 UL)![]() Willems, Helmut ![]() Report (1991) Detailed reference viewed: 84 (0 UL)![]() ![]() Wagener, Renée ![]() in Franz, Norbert; Fuchshuber, Thorsten; Kmec, Sonja (Eds.) et al Identitätsbildung und Partizipation im 19. und 20. Jahrhundert. Luxemburg im europäischen Kontext (2016) Detailed reference viewed: 30 (1 UL) |
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