K-and Ka-band Power GaAs FETs

Noguchi, Takehiro; Aono, Y.

doi:10.1109/mwsym.1982.1130645

Cited by 14 publications

(9 citation statements)

References 2 publications

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“…The fabrication of MEMS such as micromotors is mainly based on silicon and its compounds and their tribological behaviour plays a key role in the performance of such systems. From friction and wear studies of various combinations of materials applicable in microsystems it is observed that DLC sliding on DLC shows low friction and low wear rate [4,8,17,28,29,[32][33][34][35][36][37][38]. The static friction coefficient of silicon can vary from very low values when rubbing against silicon oxide (below 0.1) to relatively high values in silicon-molybdenum systems (0.45) [34].…”

Section: Fabrication Design Ambient and Performance Of Memsmentioning

confidence: 99%

Control tribological and mechanical properties of MEMS surfaces. Part 1: critical review

Rymuza

1999

Microsystem Technologies

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Section: Fabrication Design Ambient and Performance Of Memsmentioning

confidence: 99%

Control tribological and mechanical properties of MEMS surfaces. Part 1: critical review

Rymuza

1999

Microsystem Technologies

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“…2007, 252, [1][2][3][4][5][6][7][8][9][10][11] DOI: 10.1002/masy.200750601 1 becomes of first order when an additional energy scale besides the effective attraction between monomers comes into play, like, for instance, a bending stiffness of the chains. There exists also a long tradition of computer simulations [9][10][11][12][13][14][15][16][17] trying to establish the coil-globule transition behaviour for different polymer models. According to these studies the continuous nature of the transition in three spatial dimensions is well established and also a first order transition for stiff enough chains has been found.…”

Section: Introductionmentioning

confidence: 99%

New Results on the Collapse Transition(s) of Flexible Homopolymers

Paul

Rampf

Strauch

et al. 2007

Macromolecular Symposia

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We analyze the collapse transition of flexible homopolymer chains in the bond-fluctuation model employing the Wang-Landau Monte Carlo algorithm. The coil-globule transition is followed by a first order transition into a solid state occurring in the collapsed globule. In the thermodynamic limit (chain length to infinity) the topology of the phase diagram depends on the range of the attractive interaction between the monomers. For sufficiently large interaction range a normal behaviour of a continuous coil-globule transition at the Q-temperature followed by a crystallization transition at lower temperature is observed. For short interaction range the first-order transition asymptotically can pre-empt the coil-globule transition such that a first-order collapse from a random-coil into a crystalline globule occurs. This vanishing of the liquid globule state is similar to the vanishing of the vapour-liquid coexistence found for colloidal suspensions interacting by a shortranged attraction.

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“…The Goddard High-Resolution Spectrograph [25] on board the Hubble Space Telescope (until 1997), the Ultraviolet-Visible Echelle Spectrograph (UVES) on the Very Large Telescope [43], HIRES on Keck I [130], the High Dispersion Spectrograph on Subaru [97] opened up the UV spectral window to high-resolution spectral studies. Two classes of stars benefited from this new instrumentation: Cool, metal-poor stars enriched in heavy elements (Z > 30) and warm, main-sequence chemicallypeculiar (CP) stars, since they are ideal candidates for exploring the wealth of heavy-element lines present in the ultraviolet spectrum.…”

Section: Exploring the Near-uv: The Heavy Elementsmentioning

confidence: 99%

Atomic and Molecular Data for Stellar Physics: Former Successes and Future Challenges

Jorissen¹

2004

Physica Scripta

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This review highlights current (and future!) hot topics in astrophysics where atomic or molecular input data are (or will be) essential, with special emphasis on topics relating to nucleosynthesis and cosmochemistry.We first discuss issues (like the abundances of oxygen and iron in the Sun, and that of lithium in post-AGB stars) where the use of poor-quality atomic or molecular data have led to spurious astrophysical puzzles which sparked fancy astrophysical models or theories. We then address issues where the advent of new instruments (like the ultraviolet high-resolution spectrographs-GHRS onboard HST, Keck-HRS or VLT-UVES-or future infrared satellites) calls for new and accurate atomic or molecular data. The solar-system abundance curve: A clue to nucleosynthesisThe relative abundances of the chemical elements in the solar system have been derived for the first time by Russell in 1929 [114], from the spectroscopic analysis of the solar photosphere, and by Goldschmidt in 1937 [48], from the chemical analysis of primitive meteorites known as carbonaceous chondrites. More recent compilations and revisions of the solar-system abundances were provided by Suess & Urey in 1956 [124],

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K-and Ka-band Power GaAs FETs

Cited by 14 publications

References 2 publications

Control tribological and mechanical properties of MEMS surfaces. Part 1: critical review

Control tribological and mechanical properties of MEMS surfaces. Part 1: critical review

New Results on the Collapse Transition(s) of Flexible Homopolymers

Atomic and Molecular Data for Stellar Physics: Former Successes and Future Challenges

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