摘要:
The invention relates to a method of realization of a sacrificial layer, including the steps of: lithography of a resin deposited on a substrate in order to supply a lithographed resist pattern on a substrate zone, the zone having a given size and a given form, the pattern occupying a given volume, annealed according to a thermal cycle of the lithographed resist pattern, the method being characterised in that it includes, according to the resin, the determination of the size and of the form of said zone of the substrate, and the determination of the volume of the resin deposited on said zone so that the thermal cycle annealing supplies a profile chosen from among the following profiles: a planarising domed profile and a “double air gap” profile.
摘要:
The invention relates to a method of realization of a sacrificial layer, including the steps of: lithography of a resin deposited on a substrate in order to supply a lithographed resist pattern on a substrate zone, the zone having a given size and a given form, the pattern occupying a given volume, annealed according to a thermal cycle of the lithographed resist pattern, the method being characterised in that it includes, according to the resin, the determination of the size and of the form of said zone of the substrate, and the determination of the volume of the resin deposited on said zone so that the thermal cycle annealing supplies a profile chosen from among the following profiles: a planarising domed profile and a “double air gap” profile.
摘要:
A method for forming a variable capacitor including a conductive strip covering the inside of a cavity, and a flexible conductive membrane placed above the cavity, the cavity being formed according to the steps of: forming a recess in the substrate; placing a malleable material in the recess; having a stamp bear against the substrate at the level of the recess to give the upper part of the malleable material a desired shape; hardening the malleable material; and removing the stamp.
摘要:
A microelectromechanical system comprises a beam and an electrode coupled to the beam via electrostatic interaction. The beam is designed to undergo elastic flexural deformation and has an approximately constant cross section. The beam consists of several flat faces that extend over the length of the beam, each having a thickness of less than an external dimension of the cross section. A flexural vibration frequency of the beam is then increased compared with a solid beam of the same external dimensions. Such a microelectromechanical system is suitable for applications requiring very short transition times, or for producing high-frequency oscillators and resonators.
摘要:
A method for forming a resonator including a resonant element, the resonant element being at least partly formed of a body at least partly formed of a first conductive material, the body including open cavities, this method including the steps of measuring the resonator frequency; and at least partially filling said cavities.
摘要:
A vibrating nano-scale or micro-scale electromechanical component including a vibrating mechanical element that cooperates with at least one detection electrode. The detection electrode is flexible and is configured to vibrate in phase opposition relative to the vibrating mechanical element. Such a component may find, for example, application to resonators or motion sensors.
摘要:
A method for forming a variable capacitor including a conductive strip covering the inside of a cavity, and a flexible conductive membrane placed above the cavity, the cavity being formed according to the steps of: forming a recess in the substrate; placing a malleable material in the recess; having a stamp bear against the substrate at the level of the recess to give the upper part of the malleable material a desired shape; hardening the malleable material; and removing the stamp.
摘要:
A variable capacitor having a groove portion formed in an insulating substrate, two upper portions of the substrate located on either side of the groove portion forming two lateral edges, a conductive layer covering the inside of the groove portion, a flexible conductive membrane, placed above the groove portion by bearing on the edges, a dielectric layer covering the conductive layer or the membrane to insulate the conductive layer and the membrane, and terminals of application of a voltage between the conductive layer and the membrane, and such that the depth of the groove portion continuously increases from one of the edges to the bottom of the groove portion, and that the conductive layer covers the inside of the groove portion at least to reach one of the two edges, that it may cover.
摘要:
The integrated circuit comprises a support substrate having opposite first and second main surfaces. A cavity passes through the support substrate and connects the first and second main surfaces. The integrated circuit comprises a device with a mobile element, the mobile element and a pair of associated electrodes of which are included in a cavity. An anchoring node of the mobile element is located at the level of the first main surface. The integrated circuit comprises a first elementary chip arranged at the level of the first main surface and electrically connected to the device with a mobile element.
摘要:
The present disclosure relates to a method of adjusting the resonance frequency of a vibrating element, comprising measuring the resonance frequency of the vibrating element, determining, using abacuses and as a function of the resonance frequency measured, a dimension and a position of at least one area of modified thickness to be formed on the vibrating element so that the resonance frequency thereof corresponds to a setpoint frequency, and forming on the vibrating element, an area of modified thickness of the determined dimension and position.