摘要:
A novel ceramic material for sacrificial layers used in the process for fabricating "micromachines" having dimensions of several tens micrometers to several hundreds micrometers. The sacrificial layers are made of oxide ceramic containing rare earth, Ba and Cu such as Re₁Ba₂Cu₃O 7-x (Re = rare earth) which can be etched easily and selectively with HCl solution (1/1000) without spoiling dimensional precision of the machine elements.
摘要:
In the fabrication of a free-standing miniaturized structure in a range of about 10 to 20 µm thick, a method based on a sacrificial system includes the steps of selecting a substrate material, depositing on the substrate material a sacrificial layer 58 of material and patterning the sacrificial layer to define a shape. A photoresist layer 62 of material is deposited on the sacrificial layer and patterned by contrast-enhanced photolithography to form a photoresist mould. Upon the mould there is plated a metallic layer 68 of material. The electroplated structure conforms to the resist profile and can have a thickness many times that of conventional polysilicon microstructures. The photoresist mould and the sacrificial layer are thereafter dissolved using etchants to form a free standing metallic structure in a range of about 10 to 20 µm thick, with vertical to lateral aspect ratios of 9:1 to 10:1 or more.
摘要:
Actionneur comportant deux dispositifs comprenant chacun un élément déformable (4, 104) hors plan, ledit élément déformable (4, 104) comprenant une première extrémité fixe (4.1, 104.1) ancrée sur un substrat et une deuxième extrémité libre (4.2, 104.2) par rapport au substrat, ledit dispositif comportant également des moyens de guidage en translation de la deuxième extrémité libre (4.2) dans le plan le long d'une première direction (X), le premier élément déformable (4, 104) étant apte à être déformé hors plan par application d'un stimulus de sorte que la deuxième extrémité libre (4.2, 104.2) se rapproche de la premier extrémité fixe (4.1, 104.1) selon un mouvement de translation dans le plan. L'actionneur comportant également un élément mobile en rotation (8) autour d'un axe (Z) orthogonal au plan et relié mécaniquement aux extrémités libres (4.2, 104.2) des éléments déformables (4,104) et un élément mobile en translation (18) relié mécaniquement à l'élément mobile en rotation (8).
摘要:
The invention relates to a micromechanical component comprising a first surface and a second surface, which are substantially perpendicular in relation to one another. According to the invention, the first and/or the second surface consist at least partially of diamond (Ci), A1xOy, SixCy, SixNy, SixOyNy-1, metallic carbides of groups 4, 5 or 6 in the periodic table and/or zircon compounds, in particular ZrxOy, where x and y represent positive whole numbers.
摘要:
In the fabrication of a free-standing miniaturized structure in a range of about 10 to 20 µm thick, a method based on a sacrificial system includes the steps of selecting a substrate material, depositing on the substrate material a sacrificial layer 58 of material and patterning the sacrificial layer to define a shape. A photoresist layer 62 of material is deposited on the sacrificial layer and patterned by contrast-enhanced photolithography to form a photoresist mould. Upon the mould there is plated a metallic layer 68 of material. The electroplated structure conforms to the resist profile and can have a thickness many times that of conventional polysilicon microstructures. The photoresist mould and the sacrificial layer are thereafter dissolved using etchants to form a free standing metallic structure in a range of about 10 to 20 µm thick, with vertical to lateral aspect ratios of 9:1 to 10:1 or more.