摘要:
The present invention generally relates to a MEMS device and a method of manufacture thereof. The RF electrode, and hence, the dielectric layer thereover, has a curved upper surface that substantially matches the contact area of the bottom surface of the movable plate. As such, the movable plate is able to have good contact with the dielectric layer and thus, good capacitance is achieved.
摘要:
Provided is a stretchable electrode which has excellent flexibility, stretchability and electrical conductivity and is capable of suppressing increase of the electric resistance in being elongated and the occurrence of variation in the electric resistance during repeated stretching and contracting. The stretchable electrode of the present invention comprises a base formed of an elastomer composition and an electrode main body integrated with the base, wherein the electrode main body is formed using multi-walled carbon nanotubes having a fiber length of 50 µm or more.
摘要:
The present invention generally relates to a MEMS DVC and a method for fabrication thereof. The MEMS DVC comprises a plate movable from a position spaced a first distance from an RF electrode and a second position spaced a second distance from the RF electrode that is less than the first distance. When in the second position, the plate is spaced from the RF electrode by a dielectric layer that has an RF plateau over the RF electrode. One or more secondary landing contacts and one or more plate bend contacts may be present as well to ensure that the plate obtains a good contact with the RF plateau and a consistent Cmax value can be obtained. On the figure PB contact is the plate bend contact, SL contact is the Second Landing contact and the PD electrode is the Pull Down electrode.
摘要:
A MEMS device comprises first and second opposing electrode arrangements (22,28), wherein the second electrode arrangement (28) is electrically movable to vary the electrode spacing between facing sides of the first and second electrode arrangements. At least one of the facing sides has a non-flat surface with at least one peak and at least one trough. The height of the peak and depth of the trough is between 0.01t and 0.1t where t is the thickness of the movable electrode.
摘要:
The present invention generally relates to a MEMS device and a method of manufacture thereof. The RF electrode, and hence, the dielectric layer thereover, has a curved upper surface that substantially matches the contact area of the bottom surface of the movable plate. As such, the movable plate is able to have good contact with the dielectric layer and thus, good capacitance is achieved.
摘要:
A variable rotating capacitor or RotCo (5) that is adapted to be connected via a transmission line (3) to the dee (2) of a synchrocyclotron (1) so as to adjust a resonant frequency of the synchrocyclotron as a function of time and which comprises a cylindrical rotor 0 and a cylindrical stator 20 that are coaxial with the Z axis. The rotor comprises a plurality of circumferentially- distributed rotor electrodes (11) extending parallel to its rotation axis Z. The stator comprises a plurality of circumferentially- distributed stator electrodes (21) extending parallel to the rotation axis Z. Each stator electrode (21) consists of a single metal plate and all said plates are distributed over one and the same stator circumference (25). This makes it possible for the RF currents in the electrodes to be better distributed and thus reduces the local overheating. The present invention also relates to a synchrocyclotron comprising such a RotCo..
摘要:
A MEMS electrostatic actuator comprises first and second opposing electrode arrangements, wherein at least one of the electrode arrangements is movable. A dielectric material (24) is adjacent the one of the electrode arrangements (22). The second electrode arrangement is patterned such that it includes electrode areas (26) and spaces adjacent the electrode areas, wherein the dielectric material (24) extends at least partially in or over the spaces. The invention uses a multitude of electrode portions as one plate. The electric field lines thus form clusters between the individual electrode portions and the opposing electrode. This arrangement provides an extended range of continuous actuation and tunability.
摘要:
L'invention concerne un procédé de réalisation d'une couche sacrificielle, comprenant les étapes de : - lithographie d'une résine déposée sur un substrat pour fournir un motif de résine lithographiée sur une zone de substrat, la zone ayant une taille donnée et une forme donnée, le motif occupant un volume donné, - recuit selon un cycle thermique du motif de résine lithographiée, le procédé étant caractérisé en ce qu'il comprend, en fonction de la résine, la détermination de la taille et de la forme de ladite zone du substrat, et la détermination du volume de la résine déposée sur ladite zone pour que le cycle thermique de recuit fournisse un profil choisi parmi l'un des profils suivants : un profil bombé planarisant et un profil en « double air gap ».