City University of Hong Kong is a public research university located in Kowloon Tong, Hong Kong. It was founded in 1984 as City Polytechnic of Hong Kong and became a fully accredited university in 1994. CityU offers over 50 bachelor's degree programmes through its constituent colleges and schools. Postgraduate degree programmes are offered by the Chow Yei Ching School of Graduate Studies. Wikipedia.
City University of Hong Kong | Date: 2015-10-13
A composite material panel includes a substrate formed of a first material; one or more strands formed from a second material, the strands being interspersed through the substrate, the second material being a natural material, the second material providing modified mechanical properties of the composite material panel.
City University of Hong Kong | Date: 2015-10-07
A material for use in a battery includes an active material arranged to undergo chemical reaction during charging and/or discharging of the battery, and a coating material coated on the active material, wherein the coating material is arranged to prevent the active material from cracking during charging and/or discharging of the battery.
City University of Hong Kong | Date: 2015-10-06
Homogeneous and transparent protective coatings for precious metals and copper alloys and techniques for forming the coatings on precious metals and copper alloys are provided. In an embodiment, ionic oxide film is deposited onto a surface of a substrate including a metal, such as a precious metal and/or a copper alloy, using pulsed chemical vapor deposition (PCVD). A homogenous and transparent solid film based on ionic oxide is formed on the surface of the substrate in response to the depositing.
City University of Hong Kong | Date: 2015-10-27
A phosphorescent transition metal complex especially suitable as sensor for hydrogen peroxide in cells, in particular in mitochondria in live cells, includes a metallic central atom, which is a transition metal, a first ligand with at least one pyridine ring, and a second ligand having at least one pyridine ring and at least one structural component selected from the group of 1,2-diketone moiety and an arylboronate moiety. A method for preparing the metal complex is also disclosed as well as a method of detecting hydrogen peroxide in cells by incubating cells with the transition metal complex. The metal complex shows advantageous intense and long-lived phosphorescence accompanied by exceptional cellular localization properties. The metal complex is highly photostable and highly selective towards hydrogen peroxide, thus, especially suitable for detecting mitochondrial H_(2)O_(2).
City University of Hong Kong | Date: 2017-02-06
Transistors can be used for a variety of electronic-based applications. Therefore, transistor efficiency and performance is of importance. An apparatus is presented herein to increase the locking range of transistors by leveraging cross-coupled injection transistors in conjunction with symmetry injection transistors. The transistor efficiency can also be increase by reducing a parasitic capacitance associated with the components of the transistor.
City University of Hong Kong | Date: 2015-11-19
The present invention provides nanoparticles and a method of preparing the nanoparticles by using an ice template. Pharmaceutical formulations including such nanoparticles and their use are also described. The method allows for an environmentally friendly provision of advantageously small particles with higher production rate and improved reproducibility.
City University of Hong Kong | Date: 2017-03-03
Systems, methods, and devices that employ self-driven gate-drive circuitry to facilitate controlling power switches to emulate a diode bridge to synchronously rectify a power signal are presented. A single-phase or multi-phase synchronous rectifier can comprise at least a first pair of switches of a first conducting path and a second pair of switches of a second conducting path that can form or emulate a diode bridge. To facilitate emulating turn-on and turn-off conditions of a diode, a switch can be turned on when voltage across the switch is forward-biased and turned off when switch current is reversed; also, there can be at least one current-controlled switch in each conducting path. Self-driven gate-drive circuitry employs low power components that can facilitate controlling respective switching of the at least first pair and second pair of switches, wherein switching of the switches is also controlled at start-up to emulate a diode bridge.
City University of Hong Kong | Date: 2015-12-08
An apparatus for generating a display medium includes a medium generating module arranged to selectively generate at least one portion of the display medium within a predetermined three-dimensional space, wherein the at least one portion of the display medium is arranged to receive an optical signal representing a visible image so as to display a portion or whole visible image within the predetermined three-dimensional space.
City University of Hong Kong | Date: 2015-12-11
A layered material suitable as substrate for a three-dimensional cell culture includes a transparent carrier layer and a transparent conductive layer as well as a photoconductive layer comprising titanium oxide phthalocyanine. A method for producing the layered material and an article comprising it and a receiving unit are disclosed. A mold-free method is provided for forming a three-dimensional hydrogel as well as for forming a three-dimensional cell culture by using the layered material or article. Uses of the layered material and of the three-dimensional hydrogel and three-dimensional cell culture are also disclosed. The layered material, cell culture and methods provided overcome significant drawbacks of currently known technologies and allows for forming various three-dimensional patterns with high flexibility and controllability via fast and relative simple and inexpensive methods. The provided layered material and article comprising it can be produced and assembled with advantageously small dimensions.
City University of Hong Kong | Date: 2016-02-01
A chemosensing hydrogel is provided that undergoes a colorimetric reaction in response to the detection of a biogenic amine vapor, such as a biogenic amine vapor that is a by-product resulting from food spoilage. In an embodiment, an apparatus for detection of biogenic amines, is provided that includes a hydrogel having a bimetallic iron(II)-iron(III) complex disposed within the hydrogel, wherein the hydrogel is configured to change from a first color to a second color in response to exposure to a biogenic amine.