60 results about "Thermal bubble" patented technology

Provided is a flexible and conformal wearable, self-contained medical device. The medical device comprises an integral housing formed by a flexible upper portion and a flexible lower portion joined along their perimeters. The medical device is also provided in a plurality of shapes and configurations for increasing the flexibility and conformability of the housing. The components contained within the housing, such as a drug reservoir, printed circuit board, and power supply are preferably constructed from flexible materials and are formed, connected and positioned according to the configuration of the housing in a manner for enhancing flexibility of the housing. A thermal bubble micropump is provided for controlling flow of a drug from the flexible reservoir, that utilizes a thermal resistor provided locally to a thermal expansion fluid that causes a surrounding membrane to expand and displace a volume of drug to be provided to the user.

There is described a method for depositing at least one biological fluid onto a surface (12) of a substrate (10), the method comprising the steps of (i) providing at least one thermal bubble-jet printhead (T1, T2, T3) loaded with at least one biological fluid, (ii) positioning the printhead (T1, T2, T3) next to the substrate, and (iii) supplying the printhead (T1, T2, T3) with energy thereby depositing the biological fluid onto the surface (12). The printhead (T1, T2, T3) is supplied with an energy E such that

E>1.6*E_th

where E_th is the threshold energy of the printhead (T1, T2, T3). There are also described an apparatus (DA) for depositing at least one biological fluid onto a surface (12) of a substrate (10) and a microarray (MA) obtained by carrying out the depositing method.

A thermal bubble type micro inertial sensor formed by micromachining technology includes a substrate, a heater arranged on the substrate, four temperature sensing members, a cap arranged above the substrate to cover and encapsulate the heater and the temperature sensing members, and a liquid filled into a chamber formed between the cap and the substrate. The temperature sensing members are symmetrical arranged at opposite sides of the heater and on the substrate, respectively, to sense the temperature difference beside the heater. The heater heats and partially vaporizes the liquid to form a thermal bubble in the liquid environment. Controlling the liquid characteristics and heater temperature may control the bubble size and enable the temperature sensing members to sense the temperature distribution variation. The sensor may serve as an inclinometer to sense the tilt, as well as an accelerometer to measure the acceleration.

An RFID based thermal bubble type accelerometer includes a flexible substrate, an embedded system on chip (SOC) unit, an RFID antenna formed on the substrate and coupled to a modulation/demodulation module in the SOC unit, a cavity formed on the flexible substrate, and a plurality of sensing assemblies, including a heater and two temperature-sensing elements, disposed along the x-axis direction and suspended over the cavity. The two temperature-sensing elements, serially connected, are separately disposed at two opposite sides and at substantially equal distances from the heater. Two sets of sensing assemblies can be connected in differential Wheatstone bridge. The series-connecting points of the sensing assemblies are coupled to the SOC unit such that an x-axis acceleration can be obtained by a voltage difference between the connecting points. The x-axis acceleration can be sent by the RFID antenna to a reader after it is modulated and encoded by the modulation/demodulation module.

The invention relates to a low voltage low power heat bubble thin film type micro-fluid drive apparatus, wherein the fluid arrangement includes a fluid channel, in which fluid fills and flow from and out from the opening of the fluid channel, a heat bubble thin film type actuator comprising heating plates arranged on the bottom of the confined fluid chamber, which is insulated from the fluid channel through elastic membrane and is filled with low-boiling point liquid.

A hubble-bubble spin method and apparatus for producing nano fibre is disclosed. The method includes the following steps: a spinning solution or dissolving body is poured in a liquid storage pool after stirring; a large amount of rule vacuole appear on the liquid level after heating, the high-pressure electrostatic generator polarization vacuole is switched on, a jet current spurts out at the top of the vacuole to shoot toward the receiving polar plate, and deposits at a receiving curtain between the solution liquid level and the receiving polar plate. The apparatus is composed of a liquid storage pool, a heating mechanism, a high-pressure electrostatic generator, the receiving polar plate, an orienting roll, an earth electrode and the receiving curtain, wherein, the heating mechanism is at the bottom of the liquid storage pool, the high-pressure electrostatic generator is connected to the solution or dissolving body in the liquid storage pool the metallic electrode, thereby forming a positive pole, the receiving polar plate is earthed through the earth electrode to form a negative pole, and the receiving polar plate, the orienting roll and the receiving curtain are provided above the liquid storage pool. The invention possesses the advantages of simple spinning mechanism, and being easy to carry out actual production control.

A method and an apparatus for nucleating bubbles in an oil-gas mixture, including introducing a sample comprising an oil-gas mixture into a chamber; and heating the sample with a heater until at least one bubble is thermally nucleated in the chamber. The bubble point (BP) pressure of the sample can be determined by detecting pressure at two points in a system, which includes the chamber and the heater, and by determining the behavior of the nucleated bubble as the pressure on the bubble is varied.

The invention discloses a thermal foaming or thermal bubble type printer digital printing process using a reactive dye ink; the digital printing process uses the reactive dye ink with high temperature resistance and long survivability; digital inkjet printing of cotton, silk, wool, linen and cotton fabrics can be realized on a thermal foaming or thermal bubble type printer, wherein the cotton, silk, wool, linen and cotton fabrics are not sized by use of a synthetic sizing agent prepared from urea, sodium alginate, nutmeg, cellulose or any paste material as a main raw material; the process is simple in step, less in water consumption, low in energy consumption, economic and environmentally-friendly, and solves the problems, in the prior art, of hydrolysis and alcoholysis of the reactive dye ink when the reactive dye ink passes through a thermal foaming or thermal bubble type printer head and crust formation and ink path blocking for the reason that high temperature of the printer head cause part of the reactive dye ink to be dried and pulverized into powder, and application of the reactive dye ink in the thermal foaming or thermal bubble type printer can be realized.

A micro fluidic module having at least a micro fluid channel barrier comprises at least an actuator, a firing chamber, a plurality of convergent fluid outlet channel and a plurality of convergent fluid inlet channel. The actuator (e.g. a heater) boils the working fluid and generates thermal bubble and instant high pressure to eject the working fluid outside and expel the working fluid through the fluid outlet channel. Then, the working fluid refills from the fluid inlet channel. Therefore, the working fluid flows consistently through the firing chamber. The working fluid flowing through adjacent firing chambers are arranged in different or consistent directions. Therefore, the refilling speed of the working fluid is increased, and the operating frequency of the module is improved.

An RFID, Bluetooth as well as zigbee based thermal bubble type angular accelerometer includes a flexible substrate, a base layer, at least one cavity, and at least one sensing assembly. The base layer is formed on the flexible substrate. The at least one cavity is formed on the base layer. The at least one sensing assembly is suspended over the at least one cavity. The sensing assembly comprises a heater and two temperature sensing elements, wherein the two temperature sensing elements are substantially symmetrically disposed on opposite sides of the heater, and the heaters and the two temperature sensing elements extend in a radial direction.

A three-dimensional prototyping composition includes a construction powder mixture and an inkjet liquid. The construction powder mixture includes a powdery molding material and a powdery binding agent. The inkjet liquid includes a nonionic surfactant, at least one polyalcohol compound, an alcohol ether compound, an antimicrobial agent and deionized water. While the inkjet liquid and the construction powder mixture are in contact with each other, the physical binding function of the powdery binding agent of the construction powder mixture is activated. Consequently, the powdery molding material and the powdery binding agent stick together to form a molded construction layer of a three-dimensional object. Moreover, the construction powder mixture can be recycled. Moreover, since the inkjet liquid may be ejected through the thermal bubble printhead, the fabricating cost of the three-dimensional physical model is reduced.

The present invention relates to the laser ink-jet printing technology. In the prior art, a laser printer is fast in printing speed, high in printing quality, high in printer cost and expensive in consumables, while an ink-jet printer is low in printer cost, cheap in consumables and slow in printing speed. The above laser ink-jet printing technology integrates the laser printer and the ink-jet printer, wherein the laser is modulated by utilizing a laser scanning system. Meanwhile, the laser deflection is controlled, so that the laser is enabled to shoot into each small ink chamber of an ink-jet head. The photoinduced deformation of components occurs inside the small ink chamber, and the size of the interior of the small ink chamber changes. Each small ink chamber inside the ink-jet head injects ink drops, so that the on-demand ink-jet printing is realized. Meanwhile, based on the ultrasonic focusing generated due to the acoustic effect of the periodic intensity-modulated laser, the ink-jet is realized. Since one part of the ink-jet head is free of any circuit, the requirement on the manufacturing process of the ink-jet head is relatively low compared with the thermal bubble technology and the piezoelectric inkjet technology. The structure is much simpler compared with the laser printer, and the printing speed is faster. Meanwhile, page amplitudes can be conveniently manufactured, and the high-precision printing is realized more easily. The use cost is low.

The invention relates to a laser ink-jetting printing head. The main parts of the laser ink-jetting printing head comprise a laser generator, a laser deflecting part, an ink-jetting part, and the like. Laser is sequentially projected in all small ink chambers of the ink-jetting part after being deflected by the laser deflecting part and generates thermal pressure or dynamic pressure, and ink is jetted out by pressure. Compared with a thermal bubble type and piezoelectric type ink-jetting head, laser ink-jetting printing head has low technical requirement for the manufacture process, simple circuit, high jetting speed and lower cost, can be easily manufactured into the ink-jetting head with page width and is easy to realize high-precision printing.

The invention belongs to the field of liquid jet technologies, and particularly relates to a thermal bubble supercharged liquid jet nozzle which comprises a shell (5), a jet nozzle (1), an electric connector (9), a liquid nozzle (10) and a thermal bubble supercharging device. A liquid channel in the liquid jet nozzle is sequentially connected with the liquid nozzle (10), the thermal bubble supercharging device and the jet nozzle (1) from top to bottom, and a liquid storage zone (12) is formed between the thermal bubble supercharging device and the liquid nozzle; the thermal bubble supercharging device comprises a liquid jet tube (4), a first check valve, a second check valve and heating devices, the first check valve is arranged at an inlet of the liquid jet tube, the second check valve is arranged at an outlet of the liquid jet tube, and the heating devices are arranged on the liquid jet tube. The thermal bubble supercharged liquid jet nozzle has the advantages that the thermal bubble supercharged liquid jet nozzle is simple in structure, low in energy consumption, high in reliability and wide in temperature application range, and low-pressure liquid can be quickly jetted at a high pressure.

The invention relates to a thermal bubble inkjet head chip structure and a method for manufacturing the same. The thermal bubble inkjet heat chip structure comprises a basal layer, an oxidation layer and a driving circuit, a dielectric layer, a source electrode and a drain electrode, a cushion layer, a resistance layer, a conductive layer and a protective layer, wherein the oxidation layer and the driving circuit are formed above the basal layer, the driving circuit is enclosed by the oxidization layer, the dielectric layer is formed above the driving circuit, the source electrode and the drain electrode are exposed in the driving circuit, the cushion layer is formed above the dielectric layer and covers the driving circuit and the drain electrode, the resistance layer is formed above the cushion layer and is provided with a heating area, the conductive layer is covered on the resistance layer partially and the protective layer is formed above the conductive layer and above the heating area. The cushion layer added between the dielectric layer and the resistance layer can cushion instant high temperature generated in the resistance layer, reduce the heat impact effect withstood by the dielectric layer below the heating layer and consequently improve the service life of the inkjet heat chip.

The invention discloses a wireless thermal bubble type accelerometer and preparation method thereof. The wireless thermal bubble type accelerometer comprises a first insulating substrate, a circuit, a first acceleration sensing device and a first support layer. The circuit is formed on the first insulating substrate. The first acceleration sensing device is coupled with the circuit and comprises two first temperature sensing elements and a first heater between the two first temperature sensing elements. The first support layer is attached to the first insulating substrate and supports the two first temperature sensing elements and the first heater.

The invention provides a digital polymerase chain reaction (PCR) system. The digital PCR system comprises a droplet formation assembly and a droplet nozzle assembly; the droplet formation assembly comprises a droplet collection tank; the droplet nozzle assembly is connected under the droplet formation assembly, and comprises a plurality of droplet nozzles; the droplet nozzles communicate with thedroplet collection tank; vaporizing components are arranged inside the droplet nozzles so as to be used for vaporizing part of the liquid of a digital PCR solution in the droplet nozzles, as well as quickly pushing the remaining liquid of the digital PCR solution into droplet forming oil in the droplet collection tank so as to form digital PCR droplets. By adopting a thermal bubble technology to form high-speed digital PCR droplets, the digital PCR system is capable of achieving a droplet formation rate of more than 1000 droplets per second; and moreover, the digital PCR system has highly efficient digital PCR oil utilization rate.

Heat-insulated micropump driven by induction heating and preparation method Thermal bubble drive for microfluid delivery, specifically a heat-bubble-driven micropump with heat source isolation function, using high-frequency alternating current wireless induction heating to generate heat bubbles , to drive the micropump. The liquid is used to isolate the heat source from the pumped liquid in the microchannel, reducing the influence of high temperature on the properties of the solution. This heat-insulated hot-bubble-driven micropump not only has the advantages of simple and easy-to-integrate structure, low working voltage, and long service life of ordinary hot-bubble micropumps, but also can reduce the temperature of the pumped liquid and reduce the impact of high temperature on some organisms in the solution. Or the damage of chemical substances, so the heat-bubble-driven heat-insulated micropump has a better application prospect.

The invention discloses lacquer for paper base lacquer painting and a preparation method thereof, and belongs to the technical field of lacquer painting. Natural lacquer and boiled pure tung oil are adopted as raw materials, by coordinating the ratio of the lacquer and the tung oil, on the basis of ultrasonic treatment mixing, the ultrasonic mechanical action is used for performing mechanical shearing on tung oil, the fusion degree and the fineness of the tung oil and the natural lacquer are improved, soaking on a paper base is facilitated, due to the ultrasonic cavitation effect, cavitation thermal bubbles are formed in the tung oil and natural lacquer mixing solution, the reaction of the tung oil and the natural lacquer is facilitated, the reaction efficiency is improved, the preparationtechnology is simple, lacquer applicable to paper base lacquer painting creation is prepared, development of the paper base lacquer painting is facilitated, and meanwhile the new research direction is put forward for follow-up lacquer painting research.