Abstract: The present invention discloses a novel micro valve device, comprising a micro fluidic channel, which is formed by combining two hydrophobic plates, and the micro/nano structure on the wall surfaces of the channel are used to manipulate the mobility of the fluid in the channel. The function of the micro/nano structure mentioned above is to alter the micro or nano surface pattern on the wall surfaces of the channel. According to the relation between the surface pattern and the surface tension, the textured areas on the wall surfaces can change the mobility of the fluid in the channel. This effect is used as a switch in new types of micro valve devices for biomedical tests. Methods of making the micro valve device are described and include generating a micro/nano structure on the surfaces of the channel. The temporal control of different valve resistances can be achieved with different lengths, shapes, depths and materials of the micro/nano structures.

Abstract: A fluidic oscillator includes an oscillator body having two attachment walls defining an oscillating chamber therebetween, an inlet duct communicatively extended from the oscillating chamber for guiding a flow of fluid entering into the oscillating chamber, an outlet duct communicatively extended from the oscillating chamber for guiding the flow of fluid exiting from the oscillating chamber, a flow splitter provided at the outlet duct to communicate with the oscillating chamber, and two feedback channels communicating with the oscillating chamber. Each of the attachment walls has an upstream portion and a downstream portion integrally extended therefrom as a step shouldering manner to form a modulating shoulder for modulating an oscillation of the flow within the oscillation chamber so as to stabilize the flow of the fluid to pass through the oscillator body.

Abstract: A biochemical detecting device for separating a reagent, a plurality of magnetic beads and a target from a mixture, and detecting the target is provided. The biochemical detecting device includes a first substrate, at least two first electrode sets located on the first substrate, a second electrode set located on the first substrate and between the two first electrode sets, and a second substrate covering the first substrate, each of the first electrode sets and the second electrode set. Accordingly, the movement of the mixture is digitally controlled by the provided biological detecting device.

Abstract: A multimedia storage case structure comprises a case and a holder mounted within the case. The holder includes an elevating base and a snap boss thereon. The elevating base has first and a second resilient lips that are separated from each other via a plurality of grooves. The first and second lips bend toward a center of the holder and protrude upward to form the snap boss. A first portion of the snap boss, connected to the first lip, includes a claw and further bend toward the center of the holder to terminate in a top pressing cap that centrally overlies the snap boss meanwhile being spaced away by a gap from a second portion of the snap boss connected to the second lip.

Abstract: An improved disk case includes a top case and a bottom case. The top case has a first protrusion defining an inner through hole. The bottom case is pivotally connected to the top case. An engagement structure is located on the bottom case to match the through hole when the bottom case comes into contact with the top case. The engagement structure has a hollow cylindrical portion, a top plate on the hollow cylindrical portion, and a second protrusion around the top plate. The top case and the bottom case are fastened together by engaging the second protrusion with the first protrusion.

Abstract: An improved disk case includes a top case and a bottom case. The top case has a first protrusion defining an inner through hole. The bottom case is pivotally connected to the top case. An engagement structure is located on the bottom case to match the through hole when the bottom case comes into contact with the top case. The engagement structure has a hollow cylindrical portion, a top plate on the hollow cylindrical portion, and a second protrusion around the top plate. The top case and the bottom case are fastened together by engaging the second protrusion with the first protrusion.

Abstract: The present invention relates to an arc processing method and device with simultaneous chemical etching wherein the device comprises a conductive electrode, being the cathode, an auxiliary electrode, being the anode, an conductive fluid, and an non-conductive work piece for processing. Processing, and precision processing in particular, of non-conductive materials is obtained by simultaneous arc discharge and etching that are brought about by chemical reactions associated with cathode and anode. Moreover, the present invention discloses simultaneous arc processing and chemical etching that offers improved processing efficiency over conventional arc processing.

Abstract: The present invention relates to an electrochemical discharge method and device with self-acting bubble layers, wherein the device comprises an electrode, being the cathode, capable of supplying self-acting bubble layers, an auxiliary electrode, being the anode, an conducting fluid, and an non-conductive work piece for processing. Processing, and precision processing in particular, of non-conductive materials is obtained by arc discharge caused by high voltage application and chemical reactions associated with cathode and anode.

Abstract: The present invention relates to an arc processing method and device with simultaneous chemical etching wherein the device comprises a conductive electrode, being the cathode, an auxiliary electrode, being the anode, an conductive fluid, and an non-conductive work piece for processing. Processing, and precision processing in particular, of non-conductive materials is obtained by simultaneous arc discharge and etching that are brought about by chemical reactions associated with cathode and anode. Moreover, the present invention discloses simultaneous arc processing and chemical etching that offers improved processing efficiency over conventional arc processing.

Abstract: The present invention relates to an electrochemical discharge method and device with self-acting bubble layers, wherein the device comprises an electrode, being the cathode, capable of supplying self-acting bubble layers, an auxiliary electrode, being the anode, an conducting fluid, and an non-conductive work piece for processing. Processing, and precision processing in particular, of non-conductive materials is obtained by arc discharge caused by high voltage application and chemical reactions associated with cathode and anode.

Abstract: A process for forming a conducting structure layer that can reduce metal etching residues, in which a pre in-situ metal layer is added before a metal layer is deposited. The pre in-situ metal layer enables the crystalloid of the metal layer to grow more 5 evenly, and thus reduces the etching residues of the conducting structure layer. A structure of a conducting structure layer is also provided.

Abstract: An automatic sampling method and facility are disclosed, by means of which multiple samples are obtained from a closed container filled with heterogeneous solid material. The sampling points are predetermined and well distributed on the container and the sampling position and depth in the container are selected by a special controller of the sampling system. The system can be operated at an open space for non-radioactive material. The obtained samples are collected and blended in a mixer for homogenization treatment to produce a final specimen for analytical measurement. The homogeneous specimen is well accepted for its representative character.

Abstract: A method for making a probe device makes use of the main shaft of an electrodischarge machining machine to mount thereon a probe for effecting the drilling operation of a PCB board. Upon completion of the drilling operation, the probe is severed and then fastened with the PCB board.

Abstract: A sudden expansion combustion chamber comprising a combustion chamber, an inlet port, a backward-facing step layer provided in the combustion chamber having a predetermined thickness so as define the inlet port, and an after-mixing chamber. The sudden expansion combustion chamber is characterized in that it contains at least a slot provided in the backward-facing step layer so as to increase the recirculating flow rate and turbulence of the incoming air, and thus reduce ignition delay.