Abstract:
A method for a PUK authenticated communication includes creating an optical challenge in a time-frequency domain, providing the optical challenge to a tPUK which includes a spatial input channel and a plurality of spatial output channels, and detecting in which of the plurality of spatial output channels a short temporally focused pulse is created. The tPUK provides a complex challenge-response behavior in the time-frequency domain. The optical challenge is created so that the tPUK creates the response having a short temporally focused pulse in only one of the plurality of spatial output channels of the tPUK.
Abstract:
The present invention provides a sensor comprising at least one whispering gallery mode resonator, wherein the resonator comprises a Bragg grating arranged over at least a portion of the perimeter of the resonator and wherein the resonator is selectively functionalized for the attachment of analyte receptors.
Abstract:
Systems and related methods are described that can be used for etching and/or depositing materials. In some embodiments, the systems comprise an outer chamber and an inner chamber. The inner chamber can comprise a lower chamber part and an upper chamber part which are moveable with respect to each other between a closed position and an open position. The upper chamber part and the lower chamber part can abut in the closed position. The upper chamber part and the lower chamber part may further define an opening in the open position.
Abstract:
A method of printing a cellular solid (120) by direct bubble writing comprises introducing an ink formulation (102) comprising a polymerizable monomer and a gas (104) into a nozzle (106), which includes a core flow channel (108) radially surrounded by an outer flow channel (110). The ink formulation is directed into the outer flow channel (110) and the gas is directed into the core channel (108). The ink formulation (102) and the gas (104) are ejected out of the nozzle (106) as a stream of bubbles (112), where each bubble includes a core (114) comprising the gas and a liquid shell (116) overlying the core that comprises the ink formulation. After ejection, the polymerizable monomer is polymerized to form a solid polymeric shell (118) from the liquid shell (116), and the bubbles are deposited on a substrate (122) moving relative to the nozzle (106). Thus, a polymeric cellular solid (120) having a predetermined geometry is printed.
Abstract:
The present invention relates to a mold for preparing a hollow 3D cell tissue structure such as an organoid, and uses thereof. Methods for preparing a hollow 3D cell tissue structure such as an organoid, in particular a human heart mimic, are also provided.
Abstract:
Aspects of the present disclosure describe improved supercontinuum generation based upon alternating optical dispersion along a waveguide length that advantageously generates much more spectral bandwidth than possible with conventional, prior art techniques without losing coherence as well as supporting a larger range of pulse energies (i.e., for lower than conventionally allowed pulse energies or high pulse energies).
Abstract:
Method and apparatus for measuring an amount of superparamagnetic material in an object, the method including a) applying a magnetic field having a first component alternating with a first period to the object and a magnetic field strength lower than a magnetic field strength at which the superparamagnetic material is driven in saturation; b) measuring a first magnetic susceptibility of the object with a detection coil; c) applying a static second component to the magnetic field for a second period being equal or larger than the first period, the strength of the magnetic field during the second period is such that the superparamagnetic material is driven towards saturation; d) measuring a second magnetic susceptibility of the object with the detection coil during the application of the static second component; and e) determining the amount of superparamagnetic material from a difference between the measured first and second susceptibility of the object.
Abstract:
A magnetic marker for use in locating tissue for surgery includes a casing and two to five magnetic elements arranged in a row. The two or more magnetic elements are separated from each other by an isolating material. The magnetic marker may be non-bio-absorbable. This means that the magnetic marker is invariable as it does not decay over time. This invariability ensures that on the basis of the signal measured by a magnetometer device a distance between a probe of the magnetometer device and the magnetic marker can be determined.
Abstract:
A method for receiving and presenting information to a user in a computer network or a computer device, comprising: the step of receiving at least one text from the computer network or the computer device, said text being tagged with a text information intensity indicator; the step of determining a user channel capacity indicator; the step of comparing said channel capacity indicator with said text information intensity indicator; and the step of presenting said text or a representation of said text to said user on said device or an a device in said computer network, wherein said presentation of said text or said representation of said text is modified by using the result of said comparison.
Abstract:
A process for the preparation of an object, supporting a lipid bilayer, for use in tissue engineering including the steps of providing an object having a surface, treating the surface of the object with a plasma containing active oxygen to provide the surface of the object with reactive groups A, to provide the surface of the object with reactive groups A, covalently attaching a sterol group to the reactive groups A and contacting the object activated with sterol groups with a lipid solution to form a lipid bilayer.