Abstract:
A method of using a fluorinated polymer having a glass transition temperature below 40 C as a contrast agent in 19F magnetic resonance imaging (MRI) of a solid object, said solid object comprising said contrast agent. The invention relates to a solid object comprising a structural component and an imaging component, wherein the imaging component is at least one fluorinated polymer. The invention relates to a method for 19F MRI in solid state using a contrast agent comprising a fluorinated polymer as well as a method for in vivo visualizing a scaffold. It further relates to a method for in vivo monitoring the degradation of a solid object in time, wherein the degradation is monitored in time by using 19F MRI to visualize the solid object, and wherein the amount of degradation of the solid object is determined based on the decrease in the visibility of the amount of 19F.
Abstract:
The invention relates to an actuator device (400) comprising an active layer (410) having directly or indirectly a skin layer (420) on top that can be touched by when in use by a user. The configuration of the active layer (410) can controllably be changed in an extension direction (x, y), and the skin layer (420) comprises a plurality of elevations (E) and intermediate recesses (R). Due to its structure, the skin layer (420) does not hinder conformation changes of the active layer (410) in the extension direction, while it provides favorable tactile characteristics of the actuator device (400). The active layer (410) may particularly comprise an electroactive polymer (EAP). The skin layer (420) may be composed of a plurality of grains isolated from each other, or it may comprise a thin surface layer (421) that is stiffer than the active layer (410).
Abstract:
The present invention relates to determining or measuring a biological, physical or physiological parameter of an object (10) by a sensor (2). It may be beneficial to constantly monitor or determine a biological, physical or physiological parameter of an object (10) by a sensor (2), subsequently allowing for a preferred removal of the sensor (2) from object (10) when the monitoring is no longer required. Accordingly, a sensor (2) is provided, e.g. a flow sensor, employing a degradable adhesive (8) for attachment of the sensor (2) to the object (10). The degradable adhesive (8) may be degradable e.g. by time, by exposure to a certain measure, e.g. induced heat, or substance for detaching the sensor (2) from the object (10) for subsequent removal of the sensor (2).
Abstract:
The electrophoretic display panel(1) for displaying a picture and subsequently displaying a subsequent picture has a pixel(2) having an electrophoretic medium (5) having first and second charged particles (6,7) and an optical state depending on the positions of the particles (6,7) in the common region (30) of the pixel (2). Furthermore, transition control means are able to control a transition of the first and the second particles (6,7) being in substantially separated domains of the common region (30) for displaying the picture to substantially separated domains of the common region (30) for displaying the subsequent picture. For the display panel (1) to be able to have an attainable optical state for displaying the subsequent picture which is unequal to the optical state determined by the mixture of the first and second particles (6,7), even if the particles (6,7) have substantially equal electrophoretic mobilities, the transition control means are further able to control the first and the second particles (6,7) to be in substantially separated domains of the common region (30) during the transition.
Abstract:
A method for forming a sealed cell structure is disclosed. The sealed cell structure comprises first (10) and second (12) substrates that are spaced apart by a plurality of partition walls (14). The partition walls define a plurality of cells (18, 19) between the first and second substrates. At least one of the substrates and the partition walls have a layer (16, 22, 30) of photo-embossing material on them. A latent image is written (112) onto the photo-embossing material, and then the image is developed, thereby causing expansion of the photo-embossing material in the areas (114) according to the pattern of the latent image. The expansion of the photo-embossing material causes the cells to be sealed apart from one another.
Abstract:
A micro-fluidic system comprises at least one micro-channel having a wall (14), a plurality of ciliary actuator elements (71) attached to said wall (14), said ciliary actuator elements (71) having an original shape when not subjected to a liquid, and means for applying stimuli to said plurality of ciliary actuator elements (71) so as to cause a change in their shape from an initial shape to an end shape. The ciliary actuator elements (71) are adapted to respond to the presence of a particular liquid by changing their original shape into the initial shape. The response to the presence of the particular liquid may be a curving of the original shape of the ciliary actuator element. Application of stimuli to the plurality of ciliary actuator elements provides a way to locally manipulate the flow of complex fluids in a micro-fluidic system.
Abstract:
The invention relates to a substrate material for analyzing fluids which has first areas with a high porosity and second areas with a lower porosity.
Abstract:
A foil moveable by non-mechanical means, such as light or heat, comprises an alternating array of first and second foil sections each resiliently and non-mechanically moveable between a flattened state and a bent state. The direction in which the first foil sections bend, when moved from the flattened to the bent state, is opposite to the direction in which the second foil sections bend when moved from the flattened to the bent state. When, in the flattened state, non-mechanically stimulating the first and second foil sections in unison, the first and second foil sections bend in opposite directions causing the foil to wrinkle, which results in a movement which is substantially linear. Using a different or removing the non-mechanical stimulus, the foil sections can be made to unbend resulting in a flattening and expansion of the foil to its original shape.
Abstract:
A flexible foil which is moveable by means of light comprises a dye which is capable of changing shape when absorbing light of a predetermined wavelength. The dye is dispersed in the foil such that, near at least one major surface of the foil, the dye is anisotropically oriented. Transverse to the foil, the concentration and/or orientation of the dye changes in an asymmetric manner. The change in orientation and/or concentration is such that, when exposed to light of the predetermined wavelength, the flexible foil moves. When exposed the dye changes shape which change in shape causes a change in lateral dimension of the foil which change in lateral dimension is, due to the change in concentration and/or orientation of the dye, different at different locations with the foil. This causes the flexible foil to move or more particular bend. In a specific embodiment the movement is reversible.
Abstract:
A light valve for controlled transmission of light comprises first and second elements at least one of which is controllably movable into optical contact with the other element. Means are provided for projecting light on the first of the two elements on the side remote from the second of the two elements. Each facing side of the elements is provided with an interference filter layer, which interference filter layers, when being in optical contact with each other, have a transmission for light projected onto the light valve in a wavelength range determined by the interference filter layers. This transmission differs from the transmission that would occur in the case where the interference filter layers are not in optical contact with each other.