Abstract: Embodiments of the present invention provide a wearable device (200) suitable for wearing on a person's wrist and comprising a metallic housing (203) and a flexible band (202) for attachment of the device to a user's wrist. The metallic housing includes a printed circuit board (PCB) (702) on which is mounted electronic components (710) including a transmitter for transmitting radio signals at a frequency between 400 and 1000 MHz. A coin-cell battery (502) powers the device. The battery is disposed in an inner core (406,406?) of the flexible band. An antenna is connected to the PCB for radiating said signals. In one embodiment the antenna comprises a coil (504,506) of wire disposed in said section of the band. The wire is of substantially a quarter wavelength in length based on the transmission frequency of the radio signals, and comprises the electrical connections between the battery and PCB.

Abstract: Embodiments of the present invention provide a wearable device (200) suitable for wearing on a person's wrist and comprising a metallic housing (203) and a flexible band (202) for attachment of the device to a user's wrist. The metallic housing includes a printed circuit board (PCB) (702) on which is mounted electronic components (710) including a transmitter for transmitting radio signals at a frequency between 400 and 1000 MHz. A coin-cell battery (502) powers the device. The battery is disposed in an inner core (406,406?) of the flexible band. An antenna is connected to the PCB for radiating said signals. In one embodiment the antenna comprises a coil (504,506) of wire disposed in said section of the band. The wire is of substantially a quarter wavelength in length based on the transmission frequency of the radio signals, and comprises the electrical connections between the battery and PCB.

Abstract: Embodiments of the present invention provide a kit comprising a device and a charger each having a curved design. The device comprises a housing, a receive coil and a rechargeable electrical power storage element. The charger for the device comprises a yoke and a transmit coil. The receive coil axis and the transmit coil axis are arranged such that the receive coil and the transmit coil form an inductive coupling. Advantageously, the device may therefore be charged by the charger without a direct wired connection between the device and a power supply, despite the device and charger having a curved design.

Abstract: An electromagnetic radiation decoupler for decoupling radiation in the wavelength range ?min to ?max. The decoupler has a first conductor layer in contact with a dielectric layer which comprises at least one area of absence and the thickness of the decoupler is less than ?min/4n, where n is the refractive index of the dielectric. The dielectric layer may be sandwiched between two conductor layers, one of which has the structure described above. The invention is also directed to methods of using and various articles comprising such a decoupler.

Abstract: An explosive device is provided, containing an explosive formulation or explosive ink, which is capable of being disposed of onto a substrate for the device by well known printing and depositing techniques, such as screen printing, ink jet printing or gravure methods. The formulation contains an ink resin binder, a metal and a non-metal in particulate form where the diameter of the particles is less than 10 ?m, such that when the formulation is heated, a reactive output results. The substrate can be chosen from any inert material or alternatively an energetic material for which the formulation provides a means of initiation. Preferred metals are aluminum iron or titanium and non-metals are carbon, silicon, boron or metal oxides such as copper oxide, nickel oxide or molybedenum oxide. Devices according to the invention may take the form of a; pyrotechnic train, initiators, fuseheads, initiators for gas generators, microthrusters, and may form part of a larger system containing energetic materials.

Abstract: A method of fabricating a magnetic tag having a plurality of information bits on its surface where some or all of the information bits are formed by depositing magnetic material onto the surface by means of an electroless deposition reaction.

Abstract: Material can be deposited directly onto a substrate by using a fluid applicator such as an inkjet printer to apply at least two fluids which react to give the desired material for a range of applications. Thus, multiples of a printing mechanism are used to deposit materials as reagents that react together to form products. The materials may also be advantageously deposited from multiple inkjet heads to prepare a wide range of reaction scenarios in the form of user-defined patterns which may be sequences of differing layers and possibly to build up thicker layers. Thus, a PCB could be printed by the inkjet printer by simply printing the metal salt and the reducing agent directly, instead of two colours from a conventional inkjet printer for example. To print a three dimensional article, a pair of fluids which react to give a precipate can be used instead. Repeated passes can then build up a desired shape. The two processes could be combined to produce composite devices such as electrical components.

Abstract: This invention relates to a method of forming high resolution patterns of material on a substrate by way of catalytic reactions.