Abstract: Aspects of this disclosure relate to a bulk acoustic wave device that includes a multi-layer raised frame structure. The multi-layer raised frame structure includes a first raised frame layer positioned between a first electrode and a second electrode of the bulk acoustic wave device. The first raised frame layer has a lower acoustic impedance than the first electrode. The first raised frame layer and the second raised frame layer overlap in an active region of the bulk acoustic wave device. Related filters, multiplexers, packaged modules, wireless communication devices, and methods are disclosed.

Abstract: There is provided a holographic optical element including: a hologram portion including a plurality of groups of unit regions, each group of unit regions of the hologram portion being configured to produce a respective holographic image under a respective light illumination having a respective predetermined wavelength; and a colour filter portion formed on the hologram portion, the colour filter portion including a plurality of groups of unit regions, each group of unit regions of the colour filter portion being arranged on a corresponding group of the plurality of groups of unit regions of the hologram portion, whereby the plurality of groups of unit regions of the colour filter portion is spatially arranged to form a predetermined colour image. There is also provided a method of forming the holographic optical element. There is further provided an article having optical security incorporated therein.

Abstract: An electronic business card comprises an enlectonic card carrying an electronic circuit and an antenna and two protective layers. A data receiver/transmitter for exchanging data with the electronic business card comprises a sensor antenna and an electronic circuit having a driver/amplifier-modulation/demodulation circuit, a memory circuit, a first input/output circuit, a second input/output circuit and a central processing unit.

Abstract: An integrated circuit (IC) has logic and timing circuits that are coupled to discrete circuitry to provide protection and indications whenever an AC adapter that is faulty or has improper voltage levels or polarity are plugged into a system. In particular, the IC device provides over-voltage, under-voltage, and reversed-polarity protections to an electronic system to keep the electronic system from being damaged by an alternating current (AC) adapter having an improper voltage range or voltage polarity. It also provides a protection that prevents an adapter from powering a host system that has a short-circuit fault.

Abstract: A technique for staining and preparing mammalian tissue for examination and study is disclosed. The technique features a fixed tissue that is embedded with paraffin to facilitate the cutting of uniformly thin sections and the penetration of a silver stain into the interstices of the collagen matrix. In particular, a 25-30 micron thick slice of cardiac tissue is silver stained and examined for cardiomyopathies.