Abstract:
Systems and methods wherein one or more processing operations on an identification document occur after a radiation curable material is applied to a surface of the identification document but before the radiation curable material is fully cured. The one or more processing operations can occur before any curing of the radiation curable material takes place. Alternatively, the one or more processing operations can occur after the radiation curable material has been partially cured, and before the radiation curable material is fully or completely cured.
Abstract:
Die Erfindung betrifft ein Verfahren sowie ein Werkzeug zur Herstellung transparenter optischer Elemente aus polymeren Werkstoffen. Dabei sollen die so herstellbaren optischen Elemente zumindest Oberflächenbereiche aufweisen, die eine reduzierte Grenzflächenreflexion aufweisen. Erfindungsgemäss wird dabei so vorgegangen, dass bei einem dem jeweiligen optischen Element entsprechenden Bezugselement, das aus einem polymeren Werkstoff besteht, die gesamte oder eine entsprechend ausgewählte Oberfläche in einem Vakuum dem Einfluss energiereicher Ionen ausgesetzt wird. So wird auf den entsprechenden Oberflächen eine unregelmässige Nanostruktur mit alternierend angeordneten Erhebungen und dazwischen liegenden Vertiefungen ausgebildet. Anschliessend wird eine dünne elektrisch leitende Schicht aufgebracht und eine galvanische Abformung durchgeführt, um ein Werkzeug mit einer Negativkontur, die von der Nanostruktur überlagert ist, zu erhalten. Mit einem solchen Werkzeug können dann die optischen Elemente in einem Formgebungsverfahren der die Grenzflächenreflexion reduzierenden Nanostruktur hergestellt werden.
Abstract:
A process for cross-linking a polyketone polymer comprising exposing the polyketone polymer to high energy radiation; and a cross-linked polyketone which is obtainable by said process.
Abstract:
A doped tin oxide contains a tin oxide and an oxide of a doping element. The doping element includes at least one of vanadium and molybdenum. Based on the total amount of the doped tin oxide,the tin oxide is about90-99mol%,and the oxide of the doping element is about1-10mol%. A polymer article containing the doped tin oxide,an ink composition containing the doped tin oxide,and method for preparing them are also provided.In addition,a method for selective metallization of the polymer article and a method for selective metallization of an insulating substrate are provided.
Abstract:
There is provided a filtering membrane and method of forming thereof. The filtering membrane comprises a substrate having a plurality of holes that extend through the substrate, and arresting formations provided around the openings of the holes on at least one side of the substrate, the arresting formations being configured to arrest the ingress of particulate entities of a selected particle oversize from entering the holes. There is also provided a mold and method of forming thereof as well as a microfluidic device incorporating the filtering membrane.
Abstract:
The invention concerns a process for producing a seamless embossing mould with defracting structures in the form of a relief pattern (10). This is done by producing an embossing tool that has defracting structures in the form of a relief structure. This embossing tool is impressed onto an intermediate mould that has at least one sleeve surface of malleable plastic material in order to transfer the defracting structures (10) to the malleable plastic material. The embossed surface is then duplicated, for example, into a metal surface (15) that produces a stable mould that is removed from the surface in a final stage.
Abstract:
A plastic foil, whose surface is bombarded in a vacuum by ions with 40 to 100 keV energy and 10 to 10 cm flux density, is made of a polymer whose monomers are either pure hydrocarbons, or may also contain oxygen and/or nitrogen, sulphur or chlorine. This plastic foil is useful as steam barrier and/or for insulating purposes in electric machines.
Abstract:
A method and apparatus for treating material surfaces (13) using a repetitively pulsed ion beam (11). In particular, the treatment is tailored by adjusting treatment parameters of a pulsed ion beam (11) to a duration less than or equal to 1000 ns and a repetition rate of less than 1 Hz.