Abstract: A tri-frequency multi-polarisation omnidirectional antenna comprising: a first plurality of curved electrically conductive strips arranged on the first face and being arranged to form an outer-loop; second plurality of curved electrically conductive strips arranged on the first face and being arranged to form an inner-loop; third plurality of curved electrically conductive strips arranged on the first face and being arranged to form middle-loop; a first power divider and a second power divider each connected to the strips of the inner-loop; a dielectric resonator comprising a first face, the first face arranged on the first face of the substrate; an electrically conductive probe being arranged at least partially within the dielectric resonator and extending at least part way along the symmetry axis.

Abstract: The present disclosure provides a gas sensor comprising a gas sensing layer fabricated based on a solution-processed, template-free synthesis method that achieves controllable ZnO nanostructured morphologies. The method is based on promotion and suppression of growth at specific crystallographic dimensions by tuning the polarity of the solvent. The gas sensing layer with the ZnO nanostructures exhibits high response, excellent selectivity and rapid recovery time.

Abstract: A method of assessing the brain lymphatic or glymphatic system and the glucose transporter function on blood-cerebrospinal fluid barrier (BCSFB) of a subject using D-glucose or a D-glucose analog. A spatial map is generated of water MR signals that are sensitized to changes in D-glucose or a D-glucose analog in cerebrospinal fluid (CSF) of the subject. The spatial map is observed at one or more time points before, one or more time points during, and one or more time points after, raising the blood level of the D-glucose or a D-glucose analog in the subject CSF. A difference is detected between the MR signals of the spatial map before, during, and after raising the blood level of D-glucose or a D-glucose analog. A physiological parameter associated with the brain lymphatic or glymphatic system and the glucose transporter function on BCSFB of the subject is ascertained based on the detected difference.

Abstract: A method for determining optimal path arrangements for an infrastructure link between two geographic locations, in particular, in uneven terrain. The method includes modelling a geographic terrain containing the two geographic locations; optimizing an arrangement cost and a repair rate for two or more potential paths based on the modelled geographic terrain, an arrangement cost model, and a repair rate model, taking into account at least two design levels, wherein the arrangement cost model incorporates direction-dependent factor and direction-independent factor associated with the path arrangements; and determining the optimal path arrangements each including multiple path portions and respective design levels associated with the path portions based on the optimization.

Abstract: A method of determining one or more target nucleic acids in cells includes the steps of: delivering one or more probes into the cells, each of the one or more probes being capable of binding with corresponding target nucleic acid present in the cells to form a double-stranded sequence; inserting an array of functionalized nanoneedles into the cells to bind with the double-stranded sequence; and hybridizing the bound double-stranded sequence with a first and second DNA sequence to produce a hybridized product, the first and second DNA sequence being at least partially complementary to each other. A kit for determining a target nucleic acid in cells includes a first reagent comprising a probe for binding with the target nucleic acid to form a double-stranded sequence; and an array of functionalized nanoneedles comprising a protein for binding with the double-stranded sequence.

Abstract: A method for analyzing survivability of an infrastructure link includes determining an optimal path arrangement of the infrastructure link between two geographic locations; and determining a risk index associated with the determined optimal path arrangement based on one or more quantified cost factors and one or more quantified risk factors associated with the determined optimal path arrangement. The risk index represents a survivability of the infrastructure link.

Abstract: A method of preparing an electrode material includes heating a substrate with a bonding agent to form a self-assembled monolayer-containing material; and depositing a polymer coating onto the self-assembled monolayer-containing material under an elevated temperature to form a layered material. An electrode material and an electrode incorporating the electrode material is also provided.

Abstract: A method for determining a layout of a wireless communication network is provided in the present invention. Numerous realizations of user device placement in a considered geometry are measured to reflect the practical distribution of the user devices in a more accurate way than the conventional approach which emulates the randomness of placements of user devices using a tractable stochastic process. Moreover, a scenario sampling approach is used to provide a lower-complexity and higher efficient way to yield optimal base station deployment results while guaranteeing the quality of service of a specified majority of the overall user device realizations.

Abstract: A power amplifier includes an active device and an output matching circuit operably connected with the active device. The output matching circuit includes a bandpass impedance transformer, in particular, a multimode bandpass impedance transformer. The multimode bandpass impedance transformer may include a multimode resonator and coupling feed lines.

Abstract: An electromagnetic device for manipulating a magnetic-responsive robotic device, and an electromagnetic apparatus incorporate one or more such electromagnetic device. The electromagnetic device includes a magnetic core 200 having a first portion and a second portion extends from one side of the first portion. The first portion has a first cross section and defining a first central axis. The second portion has a second cross section smaller than the first cross section, and defines a second central axis parallel to the first central axis. A first electromagnetic coil is arranged around the first cylindrical portion. A second electromagnetic coil is arranged around the second cylindrical portion.

Abstract: An electromechanical sensor includes: an elastic carrier arranged to extend when subjected to an external mechanical load; a sensing sheath arranged at least partially around and along the elastic carrier; wherein the sensing sheath includes an electrically resistive element having a first electrical resistance operable to change upon a change of a dimension of the elastic carrier.

Abstract: A power amplifier circuit includes a first impedance transformer circuit arranged to connect with a carrier device, and a second impedance transformer circuit arranged to connect with a peaking device. Both the first and the second impedance transformer circuit include a parallel impedance transformer arrangement.

Abstract: An electrode for use in an electrical energy storage apparatus includes: a carrier structure including a plurality of vacancies thereon; and an active material arranged to undergo chemical reaction during charging and/or discharging of the electrical energy storage apparatus; wherein the active material occupies the plurality of vacancies on the carrier structure.

Abstract: The present invention provides an open-aperture waveguide fed slot antenna including a feeding section on a substrate integrated waveguide, an H-shaped slot, a matched end, and a bottom metal layer. One end of the feeding section is open and connected to the slot, providing energy feeding to the slot. A long side of the center section of the slot is connected to a top metal part of the feeding section. Another side is connected to the matching end. The matching end includes metal which is connected to the slot, the metallic via wall and the bottom metal of the feeding section which is connected to the metallic via wall. The antenna has high gain, wide gain bandwidth, a simple structure, and low processing cost and can be applied to millimeter-wave frequency bands as well as other frequency bands.

Abstract: A leaky-wave antenna includes a substrate extending along an axis, and a dielectric waveguide extending along the axis and arranged in the substrate. The dielectric waveguide includes at least a top side, a bottom side, and opposite sides arranged between the top and bottom sides. A distance defined between the opposite sides varies along the axis for at least part of a length of the dielectric waveguide.

Abstract: In a handwriting recognition system, a fingertip-motion sensing device has first and second body parts respectively wearable on a distal phalanx and a proximal phalanx of a finger, and a bendable bridge connecting the two body parts. An accelerometer module in the first body part generates acceleration data of the fingertip motion whereas a battery module powering the accelerometer module is in the second body part, avoiding the first body part to be loaded with the battery module so as to reduce hindrance to a user in handwriting. The bridge is wavily shaped, enabling it to be extensible and retractable to avoid spurious interference generation due to unintended movement between the first body part and the distal phalanx. The sensing device wirelessly transmits the acceleration data to a computing device, which analyzes the acceleration data to determine handwritten characters by using a machine-learning classifier, preferably a convolutional neural network.

Abstract: A Doherty power amplifier circuit having a main power amplification device, an auxiliary power amplification device arranged in parallel with the main power amplification device, and a load modulation circuit comprising a harmonic injection circuit connected with respective outputs of the main power amplification device and the auxiliary power amplification device. The harmonic injection circuit is arranged to transfer harmonic components generated at the main power amplification device to the auxiliary power amplification device and harmonic components generated at the auxiliary power amplification device to the main power amplification device, when both the main and auxiliary power amplification devices are operating, for modulating the respective outputs of the main power amplification device and the auxiliary power amplification device.

Abstract: The present disclosure provides an ultrathin, flexible, and tattoo-like triboelectric nanogenerator (TENG) with a well-designed aesthetic pattern. The tattoo-like TENG as an energy harvester can provide not only an aesthetic pattern, but also various practical applications. With the rising acceptance of people towards the tattoo, the tattoo-like TENG offers an alternative tattoo-like epidermal electronics covering traditional tattoo's advantages and further carries out other potential applications.

Abstract: A method for preparing an entropy-stabilized ceramic thin film coating includes preparing a first layer formed by raw materials with a plurality of metal elements, and subjecting the first layer to reaction with anion thereby transforming at least a portion of the first layer to a second layer. The present invention also discloses an entropy-stabilized ceramic thin film coating and a component coated with an entropy-stabilized ceramic thin film coating.

Abstract: There is disclosed a method of preventing privileged web browser extensions installed in a web browser from interfering in interactions between a user of the web browser and a web application server accessible via the web browser, the method including transmitting a web browser-intelligible file to the web browser (including a custom element designating an enclave portion); creating a sandboxed page; copying at least part of the enclave portion to the sandboxed page to create a local enclave; embedding the sandboxed page in a first iframe for rendering; embedding the first iframe in a second iframe; providing an API for the local enclave using web-accessible resources for access to entities outside the local enclave; providing a software agent in the second iframe to act as a proxy between the first iframe and external entities; and encapsulating the second iframe in a shadow document object model associated with a host page.