Abstract: A non-invasive glucose sensor (10) for detecting an amount of glucose in bodily fluid, comprising: an organic electrochemical transistor (OECT) having a gate electrode (20); wherein a surface of the gate electrode (20) is modified with an enzyme and a nanomaterial to increase sensitivity and selectivity of the gate electrode (20).

Abstract: The present invention relates to a method for synthesizing water-soluble particles, the method includes providing a solution including a lanthanide compound, a halide compound, and a first solvent; introducing a capping agent into the solution to form a mixture; heating the mixture under pressure to produce the particles; and recovering the particles from the mixture. The present invention also relates to a water-soluble particle having a surface functional group. The particles exhibit up-conversion luminescence utilizing NIR excitation, wherein the particles are synthesized in a one-pot process.

Abstract: The invention relates to a low temperature co-fired ceramic (LTCC) device comprising a first dielectric layer having a first electrode, a second dielectric layer having a second electrode, wherein the first dielectric layer and the second dielectric layer are arranged so that the first electrode and the second electrode overlap with each other to form a coupled structure, wherein the two electrodes are asymmetric in configuration, with the first electrode being smaller than the second electrode in at least one dimension. The invention also relates to a method in preparing such a LTCC composition.

Abstract: The present invention relates to a method for synthesizing water-soluble particles, the method includes providing a solution including a lanthanide compound, a halide compound, and a first solvent; introducing a capping agent into the solution to form a mixture; heating the mixture under pressure to produce the particles; and recovering the particles from the mixture. The present invention also relates to a water-soluble particle having a surface functional group. The particles exhibit up-conversion luminescence utilizing NIR excitation, wherein the particles are synthesized in a one-pot process.

Abstract: The present invention relates a method of fabricating a piezoelectric device through micromachining piezoelectric-on-silicon wafer. The wafers are constructed so that piezoelectric layer is a single wafer having a thin layer from 5 to 50 ?m.

Abstract: This invention relates to a radial array ultrasound endoscopic probe and its manufacture method and a fixing and rotating device. The probe comprises: a metal cylinder located at the center; a plurality of piezoelectric elements which are cut from piezoelectric ceramic or single crystal rings and arranged around the metal cylinder, said piezoelectric elements and said metal cylinder being provided with a backing material layer for absorbing sound therebetween, said piezoelectric elements being covered with a matching material layer on the outer side thereof, and said piezoelectric elements are filled with decoupling material therebetween; a plurality of coaxial cables correspondingly connected with the plurality of piezoelectric elements; and a circular lattice in a gear shape which sleeves over said metal cylinder and functions to arrange and separate the coaxial cables.

Abstract: A non-invasive glucose sensor (10) for detecting an amount of glucose in bodily fluid, comprising: an organic electrochemical transistor (OECT) having a gate electrode (20); wherein a surface of the gate electrode (20) is modified with an enzyme and a nanomaterial to increase sensitivity and selectivity of the gate electrode (20).

Abstract: This invention relates to a rotary ultrasound imaging system comprising a control device, an ultrasound probe head and a rotary motor device, wherein the rotary motor device receives ultrasound signals sent from the ultrasound probe head, and outputs the received ultrasound signals to the control device through a 360-degree rotation; and the ultrasound probe head comprises a housing with an installation groove which is provided therein with an ultrasound transducer with a concave focusing surface. Since the concave focusing surface is directly formed on the ultrasound transducer, focusing of the rotary ultrasound imaging system is realized without addition of extra components (e.g. lens). Therefore lateral resolution and performance are improved. Furthermore, since the output shaft of the rotary motor of the rotary ultrasound imaging system is configured as a hollow shaft, ultrasound signals from the ultrasound transducer may be sent to the control device through a path of 360-degree rotation.

Abstract: The present invention relates a method of fabricating a piezoelectric device through micromachining piezoelectric-on-silicon wafer. The wafers are constructed so that piezoelectric layer is a single wafer having a thin layer from 5 to 50 ?m.

Abstract: An ultrasound sensor consists of an optical fiber having an active portion with high birefringence and two non-active portions located at each end of the active portion. A bragg grating is provided in the fiber. An ultrasound measurement device includes an ultrasound sensor with an excitation source for the fiber and an analysis unit connected to the fiber.

Abstract: An ultrasonic sensor having a polarization maintaining fibre including two orthogonal linear principal axes and a straight sensing portion. A laser source directs a beam through a quarter wave plate to provide a circularly polarized beam to an input end of the fibre. The beam emerging from an output end of the fibre is directed to a linear polarizer and the intensity of the beam is detected by a photodetector. A signal processor thereafter generates suitable driving signals for a display unit indicative of mode coupling induced in the fibre by incident ultrasonic waves.

Abstract: An ultrasonic sensor utilizing a polarization maintaining optical fibre. The invention includes a polarization maintaining fibre, a light source for launching light beams into the fibre so that the light beams are respectively aligned with each of the principal axes of the fibre, and an output detection system for determining a phase difference induced between the light beams by ultrasonic waves incident upon the fibre. A bias control may be provided to compensate for environmentally induced phase differences. The invention also include a polarization maintaining fibre divided into a sensor portion and a lead portion optically joined together by a 45 degree joint. A light source launches a linear polarized beam into the lead portion in alignment with one of the principal axes and a detection system determines phase difference induced by incident ultrasonic waves between the two components passing through the sensor portion.

Abstract: A multifrequency composite ultrasonic transducer system includes a transducer comprised of piezoelectric ceramic rods embedded in a polymer matrix. By selecting the appropriate thickness and width of ceramic rod, the transducer assembly can be made to resonate at a number of frequencies. One of the resonance frequencies is determined by the thickness of the ceramic rod; other resonance frequencies are determined by the width and/or the ratio of width to thickness of the ceramic rods.