Abstract:
The invention relates to materials and devices including these materials having non-erasable optical data capability, as well as to methods of storing optical data and to apparatus for carrying out these functions. In particular there is provided a method of storage of non-erasable optical data comprising exposing data storage material of a three-dimensional optical data storage device to focussed electromagnetic radiation wherein the radiation is of a wavelength and power appropriate to generate micro-cavity formation within the data storage material and wherein the location of micro-cavities encodes for stored data; the data storage material comprising a polymer matrix and a photosensitive agent dispersed through the polymer matrix.
Abstract:
A separator (2) for separating material (16, 17) from a fluid, the separator comprising: an inlet (6); a separating chamber (20) in fluid communication with the inlet (6); a holding chamber (22); deflecting means (30, 50, 70, 90, 100) for deflecting material (16, 17) entrained in or moving with fluid entering the separating chamber (20) from the inlet towards the holding chamber (22); and an outlet (8) for permitting flow of fluid from which the material has been removed from the separating chamber.
Abstract:
Described herein is a wearable tactile feedback device (100, 300, 500) for attachment to a body part such as a forearm (102) of a user. The device (100, 300, 500) comprises a body (104) adapted to fit to the forearm (102) of the user. The device (100, 300, 500) also includes a plurality of vibration motors (106-121) attached to or embedded within the body (104) at spaced apart locations. A microcontroller (124) is configured to send control signals to the plurality of vibration motors (106-121). The plurality of vibration motors (106-121) are responsive to respective ones of the control signals to vibrate at predetermined intensities, frequencies and durations to provide vibratory tactile feedback to the user in the form of three dimensional direction cues for movement of the forearm (102). (Figure 1)
Abstract:
Described herein is an apparatus, system and method of digital imaging. One embodiment provides an apparatus (104) for coupling to a computational device (106) to facilitate digital imaging of an object (102). The apparatus (104) comprises a mask (112) defining an array of pinholes for modulating light (114) diffracted from the object (102). An intensity pattern (120) generated by modulated light (122) from the mask (112) is detectable using an image sensor (124) for digital construction of one or more images of the object (102) by the computational device (106).
Abstract:
A method for analysing assessments comprising the steps of: obtaining formatted student data defining a plurality of assessments associated with the global group and corresponding one or more assessment parameters associated with each assessment; determining one or more groups associated with the assessments, wherein each assessment is assigned to one group; determining a group rule for each group defining a relationship between the one or more assessments of the group and a contribution made by the assessments of the group to a global mark associated with the global group; and determining an assessment contribution score for each assessment in dependence on the group rule and a group weighting defining a maximum contribution made by the assessment(s) of the group to the global mark.
Abstract:
A nozzle for a printhead of a 3D printer, the nozzle comprising a body having an inlet end adapted to feed print material into the nozzle and an outlet end adapted to deposit the print material onto a substrate, wherein the outlet end includes an opening that is adapted to receive a reinforcing member to be deposited on the substrate, the nozzle further including a shielding element located within the body that is adapted to shield a portion of the reinforcing member positioned within the opening from the print material during deposition of the print material.
Abstract:
A system (10) for automatically detecting software vulnerability in machine code (11) of software, comprising: a software receiving module configured to receive software in the form of machine code (11); and a trained prediction model (300) configured to generate a predicted label on existence or non-existence of a software vulnerability and assigning a vulnerability score corresponding to a probability of vulnerable functions in the machine code (11) from the machine code (11) received by the software receiving module; wherein the trained prediction model (300) includes an attention layer (130) configured to output an attention score and attention words that correspond to keywords from a training dataset (200) having the highest contribution to the generated predictions, and the attention words enabling the location of the software vulnerability in the machine code (11) to be identified.
Abstract:
The present invention relates to cell culture and the use of nanorods comprising a plasmonic metamaterial for facilitating detachment of cells from the cell culture. These substrates are optically responsive and capable of stimulating plasmons which are capable of detaching cells from the cell culture. Cell populations retrieved from the cell cultures are also provided.
Abstract:
Methods and apparatus for recording and retrieval of optically readable data employ a recording medium (100) which comprises an optically active material (108) able to induce a change in properties of the medium in the presence of optical radiation having a first characteristic, such as a first optical frequency, and wherein the change in properties can be inhibited by optical radiation having a second characteristic, such as a second optical frequency. During recording, a region of the recording medium (100) is irradiated with a first beam (506) of optical radiation having the first characteristic, the beam having a sufficient intensity within a central portion of the irradiated region and being of sufficient duration to cause an optically induced change in properties of the recording medium. Simultaneously, the region of the recording medium (100) is irradiated with a second beam (508) of optical radiation having the second characteristic, the second beam having a local intensity minimum within the central portion of the irradiated region, and a local intensity maximum in at least one portion of the irradiated region adjacent to the central portion which is sufficient to inhibit the optically induced change in properties of the recording medium.A similar method is employed for retrieval, however the intensity of the first beam (506) is reduced to prevent changes in material properties within the recording medium (100).
Abstract:
An optical data storage product, including a data storage medium containing mutually spaced bodies selectively responsive to light of respective different wavelengths and respective different polarisations, said bodies being distributed in a plurality of selectably addressable regions of said data storage medium such that each region contains groups of said bodies selectively responsive to light of respective different combinations of wavelength and polarisation, wherein each group of bodies in each region can be selectively modified to store digital data in said region using light of a corresponding one of a plurality of said wavelengths and a corresponding one of a plurality of said polarisations and having an intensity exceeding a threshold intensity.