Abstract: A transducer device for detecting an environmental state within a biological material including a channel comprising a fluid, a hydrogel material, which is adapted to change its volume when getting into contact with an environmental material and/or when detecting an environmental change, and which is mechanically coupled to the channel such that the volume of the channel changes when the volume of the hydrogel material changes. The transducer device further includes a sensor, which is adapted to generate a signal upon detection of the change of a physical property of the fluid that is induced by the volume change of the channel. By applying the transducer device, an accurate monitoring of physiological parameters, for which the hydrogel material is sensitive is possible. It is also possible to apply the transducer device outside of the bodily lumen, for example to monitor the blood of a patient outside the bodily lumen.

Abstract: The invention relates to a transducer device (100,200,300,400) for detecting an environmental state or a change in the environmental state, in particular for detecting an environmental state within a biological material. The transducer device (100,200,300,400) comprises a channel (2,22,51) comprising a fluid, a hydrogel material (1,21,51), which is adapted to change its volume when getting into contact with an environmental material and/or when detecting an environmental change, and which is mechanically coupled to the channel (2,22,51) such that the volume of the channel (2,22,51) changes when the volume of the hydrogel material (1,21,51) changes. The transducer device (100,200,300,400) further comprises a sensor (11,12,25,35), which is adapted to generate a signal upon detection of the change of a physical property of the fluid that is induced by the volume change of the channel (2,22,51).

Abstract: Self-learning process for automatically adjusting a dosage of a substance administered to a person by a drug delivery device, a drug delivery device, wherein a dosage of a substance is adjusted by such a self-learning process and a drug delivery system comprising such a drug delivery device. Pain is experienced differently at certain times of day due to the origin causing the symptoms. Therefore, the medication providing pain relief should also be adjusted accordingly. The invention is to anticipate the pain experience and to deliver pain relief medication in such a way that Quality of Life is improved by appropriate timing of the right amount of medication and by appropriate timing of turning off the medication to reduce side effects.

Abstract: It is described a hydrogel based transducer device for detecting an environmental state, in particular for detecting an environmental state within a biological material. The transducer device (300) comprises a base element (302), a radiation source (305), which is formed at the base element (302) and which is adapted to emit electromagnetic radiation (306), an optical element (325), which is arranged at the base element (302) and which is adapted to interact with the electromagnetic radiation (306). The transducer device (300) further comprises a radiation detector (350), which is adapted to receive the electromagnetic radiation (326) having interacted with the optical element (325), and a hydrogel material (340), which is mechanically coupled to the optical element (325) and which is adapted to change its volume when getting into contact with an environmental material of the transducer device (300) such that the spatial position of the optical element (325) is changed.

Abstract: The present invention provides a device for controlled release of molecules. The device is particularly suitable for controlled release of therapeutic drugs to a patient. The device includes a housing with an opening for release of the molecules from the housing. The housing also comprises a reservoir for containing the molecules, in particular therapeutic drugs. The reservoir is arranged in the housing to allow release of the molecules through the opening. The device also comprises at least one thermoswitchable membrane and at least one heating element for at least partially heating the membrane. The device is configured for modulating the release of the molecules at the opening by heating the membrane, using the heating element. Optionally, the device further comprises a pressure element for providing pressurized release of the molecules from the device. In this way, the drug can be delivered to a patient in a pulsatile fashion.

Abstract: A hydrogen storage material has a magnesium-containing intermetallic compound which can form a hydride with hydrogen. The intermetallic compound has an alloy of magnesium and a trivalent metal selected from the group of Sc, Y, La and the rare earth elements. The hydrogen storage material can further have a catalytically active material.

Abstract: The invention relates to a switching mirror display having an increased aperture. The display comprises pixel elements (20) having a switchable layer (3), which is switched between a reflecting and an absorbing state by changing a hydrogen content of the switchable layer (3). Applying a DC voltage on electroconductive layers (11, 13) changes the hydrogen content. These electroconductive layers (11, 13) sandwich a stack of layers comprising the switchable layer (3), which stack has been deposited on a transparent substrate (1). The display is being viewed from a side (24) of the substrate on which the stack is deposited. The pixel element (20) is driven by an active matrix element (22). The switchable layer (3) extends across the active matrix element (22) and conceals this element. This increases the aperture of the display.

Abstract: A description is given of a switching device (1) comprising a transparent substrate (3), a switching film (5) comprising a hydride of scandium and magnesium, covered with a palladium layer (7). By exchange of hydrogen, the switching film can be reversibly switched from a transparent state to a mirror-like state with zero transmission via an intermediate black absorbing state. The conversion between both states is reversible, and this phenomenon can be used, for example, in an optical switching element or sun roof.

Abstract: A matrix display (20) comprises pixels based on switching elements (30) which comprise a switchable layer which can be switched from one chemical state to another, the optical properties of said chemical states being different. Voltage-limiting devices (41, 42) preventing pixel degradation are arranged on the switching elements (30).

Abstract: A description is given of a switching device (1) comprising a transparent substrate (3), a switching film (5) comprising a hydride of scandium and magnesium, covered with a palladium layer (7). By exchange of hydrogen, the switching film can be reversibly switched from a transparent state to a mirror-like state with zero transmission via an intermediate black absorbing state. The conversion between both states is reversible, and this phenomenon can be used, for example, in an optical switching element or sun roof.

Abstract: A matrix display (20) comprises pixels based on switching elements (30) which comprise a switchable layer which can be switched from one chemical state to another, the optical properties of said chemical states being different. Voltage-limiting devices (41, 42) preventing pixel degradation are arranged on the switching elements (30).

Abstract: The invention relates to a switching device having shorter switching times. The device comprises a switchable layer (3), which is switched between a reflecting and an absorbing state by changing a hydrogen content of the switchable layer (3). Applying a DC voltage on electroconductive layers (11, 13) changes the hydrogen content. These electroconductive layers (11, 13) sandwich a stack of layers comprising the switchable layer (3) and a hydrogen storage layer (9). The hydrogen storage layer comprises essentially the same compounds as the switchable layer (3), viz. LMgHx and preferably GdMgHx. The storage layer may be made thin, leading to relatively short hydrogen transportation times and a relatively fast display. The device may be further improved by applying a scattering foil.

Abstract: Disclosed is a hydrogen storage material comprising a magnesium-containing intermetallic compound which can form a hydride with hydrogen. The intermetallic compound comprises an alloy of magnesium and a trivalent metal selected from the group of Sc, Y, La and the rare earth elements. Preferably, the intermetallic compound comprises a scandium-magnesium alloy. In an advantageous embodiment, the hydrogen storage material also comprises a catalytically active material.

Abstract: In an active matrix display (20) comprising pixels based on switching mirror display elements (30) the driving circuit provides continous current in two directions (charge/discharge) and prevents device degradation

Abstract: A description is given of a switching device (1) comprising a transparent substrate (3), a switching film (5) comprising a hydride of scandium and magnesium, covered with a palladium layer (7). By exchange of hydrogen, the switching film can be reversibly switched from a transparent state to a mirror-like state with zero transmission via an intermediate black absorbing state. The conversion between both states is reversible, and this phenomenon can be used, for example, in an optical switching element or sun roof.

Abstract: The invention relates to a switching device having shorter switching times. The device comprises a switchable layer (3), which is switched between a reflecting and an absorbing state by changing a hydrogen content of the switchable layer (3). Applying a DC voltage on electroconductive layers (11, 13) changes the hydrogen content. These electroconductive layers (11, 13) sandwich a stack of layers comprising the switchable layer (3) and a hydrogen storage layer (9). The hydrogen storage layer comprises essentially the same compounds as the switchable layer (3), viz. LMgHx and preferably GdMgHx. The storage layer may be made thin, leading to relatively short hydrogen transportation times and a relatively fast display. The device may be further improved by applying a scattering foil.

Abstract: The invention relates to a switching mirror display having an increased aperture. The display comprises pixel elements (20) having a switchable layer (3), which is switched between a reflecting and an absorbing state by changing a hydrogen content of the switchable layer (3). Applying a DC voltage on electroconductive layers (11, 13) changes the hydrogen content. These electroconductive layers (11, 13) sandwich a stack of layers comprising the switchable layer (3), which stack has been deposited on a transparent substrate (1). The display is being viewed from a side (24) of the substrate on which the stack is deposited. The pixel element (20) is driven by an active matrix element (22). The switchable layer (3) extends across the active matrix element (22) and conceals this element. This increases the aperture of the display.