Abstract:
A method for fabricating a membrane (50) having a corrugated, multi-layer structure, comprising the steps of: providing a substrate (20) having an insulator layer (30) on the top surface of the substrate (20), a conductive layer (40) on the insulator layer, a sacrificial layer (206) on said conductive layer (40), and a second conductive layer (202); patterning a series of etch holes (205) in the second conductive layer (202) to allow release etchant to have access to a second sacrificial layer (206) ; depositing the second sacrificial layer (206) onto said second conductive layer (202) so that the series of holes (205) are filled with the second sacrificial layer (206) ; patterning the second sacrificial layer with a radial and/or concentric grid pattern so that a third conductive layer (201) when deposited will form the support structure and top portion of the corrugated structure; depositing the third conductive layer (201) so that the grid pattern is filled in and is in contact with the second conductive layer (202) and; removing the first and second sacrificial layers (206) by immersing the device in a release etchant.
Abstract:
The present disclosure pertains to our discovery of a particularly efficient method for etching a multi-part cavity in a substrate. The method provides for first etching a shaped opening, depositing a protective layer over at least a portion of the inner surface of the shaped opening, and then etching a shaped cavity directly beneath and in continuous communication with the shaped opening. The protective layer protects the etch profile of the shaped opening during etching of the shaped cavity, so that the shaped opening and the shaped cavity can be etched to have different shapes, if desired. In particular embodiments of the method of the invention, lateral etch barrier layers and/or implanted etch stops are also used to direct the etching process. The method of the invention can be applied to any application where it is necessary or desirable to provide a shaped opening and an underlying shaped cavity having varying shapes. The method is also useful whenever it is necessary to maintain tight control over the dimensions of the shaped opening.
Abstract:
본 발명은 투명한 또는 투과성 유리 기판 (2) 안으로 적어도 하나의 관통구멍 (1) 을 도입하기 위한 방법에 관한 것이며, 상기 유리 기판 (2) 은 전자기 방사선, 특히 레이저를 이용해 빔축 (s) 을 따라 선택적으로 변조된다. 상기 변조들이 유리 기판 (2) 안에서 빔축 (s) 을 따라, 서로 다른 특성들을 갖는 전자기 방사선에 의해, 예컨대 서로 다른 펄스 에너지에 의해, 생성됨으로써, 상기 유리 기판 (2) 안의 에칭공정이 비균질하게 서로 다른 에칭률들로 진행된다. 이를 통해, 상기 투명한 또는 투과성 재료 안에서 에칭 처리를 근거로 생기는 관통구멍 (1) 을 타겟팅하여 그리고 선택적으로 상기 변조들의 서로 다른 특성들을 통해 형성하는 그리고 예컨대 상기 관통구멍 (1) 의 원뿔각도 (α, β) 를 변화시키는 가능성이 만들어내진다.