Abstract: A metamaterial optical filter including: a transparent substrate; and a photosensitive polymer layer provided to the transparent substrate, wherein the photosensitive polymer layer is treated using a laser to form a non-conformal holographically patterned subwavelength grating, the holographic grating configured to block a predetermined wavelength of electromagnetic radiation. A system and method for manufacturing holographically patterned subwavelength grating onto the photosensitive polymer layer including: applying a photosensitive polymer layer to a transparent substrate; placing the photosensitive polymer layer between a laser and a mirror; scanning the laser over the photosensitive polymer layer such that a holographic grating is created within the photosensitive polymer layer by interaction between the laser light and light reflected from the mirror; and stacking two or more holographically patterned subwavelength grating layers to form complex metamaterial optical filter stacks.

Abstract: A metamaterial optical filter including: a transparent substrate; and a photosensitive polymer layer provided to the transparent substrate, wherein the photosensitive polymer layer is treated using a laser to form a non-conformal holographically patterned subwavelength grating, the holographic grating configured to block a predetermined wavelength of electromagnetic radiation. A system and method for manufacturing holographically patterned subwavelength grating onto the photosensitive polymer layer including: applying a photosensitive polymer layer to a transparent substrate; placing the photosensitive polymer layer between a laser and a mirror; scanning the laser over the photosensitive polymer layer such that a holographic grating is created within the photosensitive polymer layer by interaction between the laser light and light reflected from the mirror; and stacking two or more holographically patterned subwavelength grating layers to form complex metamaterial optical filter stacks.

Abstract: A metamaterial optical filter including: a transparent substrate; and a photosensitive polymer layer provided to the transparent substrate, wherein the photosensitive polymer layer is treated using a laser to form a non-conformal holographically patterned subwavelength grating, the holographic grating configured to block a predetermined wavelength of electromagnetic radiation. A system and method for manufacturing holographically patterned subwavelength grating onto the photosensitive polymer layer including: applying a photosensitive polymer layer to a transparent substrate; placing the photosensitive polymer layer between a laser and a mirror; scanning the laser over the photosensitive polymer layer such that a holographic grating is created within the photosensitive polymer layer by interaction between the laser light and light reflected from the mirror; and stacking two or more holographically patterned subwavelength grating layers to form complex metamaterial optical filter stacks.

Abstract: A wireless stopwatch for being controlled and monitored by a remote controller includes a casing, a display device, at least one control button, a wireless transceiver provided on the casing and wirelessly communicated with the remote controller, and a central processing module. The central processing module is electrically connected to the wireless transceiver, the control button and the display device, and is configured to control the display device for displaying timer information thereon. The timer information is wirelessly transmitted to the remote controller via the wireless transceiver for further processing. The central processing module is configured to receive control command, via the wireless transceiver, from the remote controller, and execute the control command correspondingly.

Abstract: A wireless alarm system includes an alarm station and a mobile control device. The alarm station includes an alarm casing, a first wireless transceiver, an alarm device, and a first processing module supported in the alarm casing and electrically connected to the first wireless transceiver and the alarm device. The mobile control device includes a mobile device casing, a control panel, a second wireless transceiver wirelessly communicated with the first wireless transceiver of the alarm station, and a second processing module electrically connected to the control panel and the second wireless transceiver. The second processing module is configured to wirelessly communicate with the first processing module for setting up an alarm in the alarm station, so that a user is able to control setting of time and alarm in the alarm station by operating on the mobile control device.

Abstract: A clock system is provided which is capable of synchronizing times of a plurality of units in a system. In a clock system (1) including a plurality of units (10), each of the plurality of units (10) executes: receiving a radio signal; acquiring, from a received radio signal, time data including information on a time, and correcting a time of a clocking unit (106) based on time information included in the time data; displaying a time of the clocking unit (106); and transmitting time data including information on a time clocked by the clocking unit (106) and including a level that indicates how many units (10) the obtained time has passed through, thereby synchronizing times of the plurality of units (10).