摘要:
A method of anisotropic etching of structures in a semiconductor body, in particular of recesses in a silicon body (18) exactly defined laterally by an etching mask, by using a plasma (28) is proposed. An ion acceleration voltage induced in particular by a high-frequency AC voltage is applied to the semiconductor body at least during an etching step having a predefined duration. The duration of the etching step is further subdivided into at least two etching segments between which the ion acceleration voltage applied is modified each time. Preferably two etching segments are provided, a higher acceleration voltage being used during the first etching segment than during the second etching step. The length of the first etching segment can furthermore be determined dynamically or statically during the etching steps using a device for the detection of a polymer breakdown. In order to generate and adjust the value of the acceleration voltage, preferably high-frequency pulses or pulse packets having an adjustable pulse/pause ratio are used.
摘要:
A device and a method for etching a substrate, in particular a silicon body, by using an inductively coupled plasma. A high-frequency electromagnetic alternating field is generated using an ICP source, and an inductively coupled plasma composed of reactive particles is generated by the action of a high-frequency electromagnetic alternating field on a reactive gas in a reactor. In addition, a static or time-variable magnetic field is generated between the substrate and the ICP source, for which purpose at least two magnetic field coils arranged one above the other are provided. The direction of the resulting magnetic field is also approximately parallel to the direction defined by the tie line connecting the substrate and the inductively coupled plasma. Finally, a first component magnetic field is generated with a first magnetic field coil, and a second component magnetic field which is equally strong at an equivalent site is generated with a second magnetic field coil, the two component magnetic fields being oriented in opposite directions.
摘要:
Method, apparatus and plasma processing system for anisotropic etching of a substrate using a plasma. A high-frequency alternating electromagnetic field is generated using an inductive coupled plasma source, and a reactive gas or reactive gas mixture is exposed to that high-frequency alternating electromagnetic field in order to generate the plasma. The electrically charged particles of the plasma are accelerated onto the substrate. An aperture having at least one effective surface for electron-ion recombination is inserted between the plasma source and the substrate.
摘要:
An acceleration sensing device includes a rotational speed sensor which is mounted on a substrate and detects rotational speed, at least one oscillating structure with a deflectable seismic mass, and an acceleration sensor that detects linear acceleration and has at least one additional seismic mass which is suspended on flexible elements so that it can be deflected. The seismic masses of the two sensors are deflected independently of one another.
摘要:
A method for anisotropic plasma etching of silicon substrates, a plasma etching apparatus for implementing the method, and an electronic device manufactured according to the method, which method includes the steps of positioning a substrate having a surface to be depleted by etching within a processing chamber and in communication with an electrode; introducing a gas mixture including an etching gas and a passivating gas which are essentially free of chlorine, bromine or iodine into the processing chamber, the etching gas including at least one halogen or halogen compound and the passivating gas including at least one polymer-generating monomer; exciting the gas mixture with electromagnetic radiation effective to produce a plasma containing ions; and applying a voltage to one of the substrate or the electrode to accelerate the ions toward the substrate and provide the ions with an energy ranging from about 1 to about 40 eV, preferably from about 10 to about 30 eV, when the ions impinge on the surface of the substrate.
摘要:
A method of manufacturing a microphone using epitaxially grown silicon. A monolithic wafer structure is provided. A wafer surface of the structure includes poly-crystalline silicon in a first horizontal region and mono-crystalline silicon in a second horizontal region surrounding a perimeter of the first horizontal region. A hybrid silicon layer is epitaxially deposited on the wafer surface. Portions of the hybrid silicon layer that contact the poly-crystalline silicon use the poly-crystalline silicon as a seed material and portions that contact the mono-crystalline silicon use the mono-crystalline silicon as a seed material. As such, the hybrid silicon layer includes both mono-crystalline silicon and poly-crystalline silicon in the same layer of the same wafer structure. A CMOS/membrane layer is then deposited on top of the hybrid silicon layer.
摘要:
A method for manufacturing a micropump, which may be for the metered delivery of insulin, multiple layers being situated on the front side of a first carrier layer, which has a front side and a rear side, and microfluidic functional elements being formed by structuring at least one of the layers. It is provided that the structuring of the at least one layer for manufacturing all microfluidic functional elements is exclusively performed by front side structuring. Furthermore, a micropump is disclosed.
摘要:
A method for manufacturing porous microstructures in a silicon semiconductor substrate, porous microstructures manufactured according to this method, and the use thereof.
摘要:
A method for producing porous microneedles (10) situated in an array on a silicon substrate includes: providing a silicon substrate, applying a first etching mask, patterning microneedles using a DRIE process (“deep reactive ion etching”), removing the first etching mask, at least partially porosifying the Si substrate, the porosification beginning on the front side of the Si substrate and a porous reservoir being formed.
摘要:
A method of manufacturing a microphone using epitaxially grown silicon. A monolithic wafer structure is provided. A wafer surface of the structure includes poly-crystalline silicon in a first horizontal region and mono-crystalline silicon in a second horizontal region surrounding a perimeter of the first horizontal region. A hybrid silicon layer is epitaxially deposited on the wafer surface. Portions of the hybrid silicon layer that contact the poly-crystalline silicon use the poly-crystalline silicon as a seed material and portions that contact the mono-crystalline silicon use the mono-crystalline silicon as a seed material. As such, the hybrid silicon layer includes both mono-crystalline silicon and poly-crystalline silicon in the same layer of the same wafer structure. A CMOS/membrane layer is then deposited on top of the hybrid silicon layer.