54 results about "Effective surface area" patented technology

Described herein are systems, devices, and methods for filtering a fluid. The fluid may include or may be suspected to include a particle. The systems may include a filtration housing and a filter at least partially compressed within the housing. Compression of the filter set by the housing may result in a gradation of effective pore sizes of the filter, allowing for particles of various sizes to be captured within the filter. The compression may additionally increase an effective surface area of the filter and allow for multidirectional flow of the fluid through the filter. The methods for use and manufacture of the filtration systems and devices may include arranging the filter within the housing such that at least a portion of the filter is compressed within the housing and a desired effective pore size of the filter is achieved.

According to the heat exchanger core body based on the composite three-period minimal curved surface structure and the design method, the advantages of various TPMS structures are integrated, and the balance of efficient heat exchange, low flow resistance and scaling prevention is achieved. The heat exchanger core body based on the composite three-period minimal curved surface structure is formed by combining at least two different three-period minimal curved surface (TPMS) unit structures in space, the TPMS unit structures of the heat exchanger core body in the fluid flowing direction are arranged in a partitioned mode, a Gyandroid structure with small pressure drop is adopted in a fluid inlet area, and the Gyandroid structure with small pressure drop is adopted in a fluid outlet area. A Diamond structure for enhancing heat exchange is adopted in a main body heat exchange area, and a Gyandroid structure with small pressure drop is adopted in an outlet area. The TPMS structure integrates the advantages of various TPMS structures, has a complex three-dimensional curved surface and a larger effective surface area, can better exchange heat with fluid, effectively optimizes fluid flow and reduces flow resistance, and the TPMS structure has the anti-scaling capacity by combining the smooth continuous curved surface characteristic with the surface treatment technology.

The invention relates to the technical field of membrane separation, in particular to a reverse osmosis membrane with a coralline structure and a preparation method and application thereof. The reverse osmosis membrane comprises a base membrane and a separation layer which are arranged in sequence; the microstructure of the separation layer comprises a coralline structure, a nodule-shaped structure and a leaf-shaped structure at the same time. The reverse osmosis membrane with the coralline structure can increase the effective surface area, increase water transmission channels and reduce the water transmission resistance, so that the water flux of the reverse osmosis membrane is remarkably improved, and the salt rejection rate of the reverse osmosis membrane is not reduced.

The invention discloses a neural microelectrode based on a silicon nanostructure and a preparation method of the neural microelectrode. The neural microelectrode comprises a silicon substrate with the silicon nanostructure, and a first insulating layer, a conductive layer and a second insulating layer which are sequentially stacked on the silicon substrate, wherein the silicon nanostructure is a silicon nanocolumn structure, and the second insulating layer partially covers the conductive layer, so that a stimulation site, a recording site and a welding site of the conductive layer are exposed. According to the invention, the silicon substrate with the silicon nanostructure is used as a substrate material of the neural microelectrode, the silicon nanostructure is a high-density three-dimensional nanostructure formed by the silicon nanorod array, the diameter and height of the silicon nanorod can be flexibly adjusted, and the silicon nanorod has a relatively large specific surface area, so that the overall effective surface area of the neural microelectrode is increased; furthermore, the impedance of the microelectrode is reduced and the electrochemical performance of the microelectrode is improved.

The invention discloses a building integrated photovoltaic power generation potential prediction method and system, and belongs to the technical field of building photovoltaic power generation evaluation.The building integrated photovoltaic power generation potential prediction method comprises the steps that spatial form prediction data, remote sensing images and a GIS of a set area building are integrated, a three-dimensional set area digital twinborn model is constructed, land use properties are recognized through a deep learning algorithm, and functional partitions are divided; based on the digital twinborn model of the three-dimensional set area, determining the total building area of the set area in a zoning manner; the building integrated photovoltaic available area and the building integrated photovoltaic installation density are determined in a partitioned mode; determining the optimal installation angle and arrangement mode of the building integrated photovoltaic module by using an optimization algorithm, and respectively determining the surface radiation quantity and effective surface area of the photovoltaic module in different partitions; and predicting photovoltaic developable installed capacity and annual power generation potential of different partitions in a spatial form adjustment period of the building by constructing a time sequence prediction model of a fusion decomposition strategy and a fusion swarm intelligent optimization algorithm.

A biologic matrix comprises a three-dimensional, resorbable collagen scaffold derived from a vascularized portion of a perfusion-decellularized, suspension-dried mammalian organ or tissue. The scaffold features a porous structure with a plurality of interconnected pores originating from one or more of its outer surfaces. The pores are created by forcing a gas through the vascular pathways of the mammalian organ or tissue while it is in a suspended position. This enables the gas to inflate the vascular pathways in all directions without restriction. The porous configuration substantially enhances the scaffold's effective surface area, making it at least 10 times greater than that of a non-porous scaffold having equivalent outer dimensions. In certain embodiments, the surface area considering the interconnected pores can be 15 times larger or more than the non-porous scaffold of equivalent outer dimensions.

The present invention belongs to the technical field of electrochemical catalysts, and specifically relates to a porous carbon nanotube-supported high entropy alloy and its preparation method and application. The porous carbon nanotube-supported high entropy alloy is a porous nanoflower network structure; the nanosheet structure formed by iron, aluminum, nickel, cobalt and manganese elements is evenly distributed on the surface of the multi-walled carbon nanotube; and the average pore size of the porous carbon nanotube-supported high entropy alloy is 10nm-11nm, and the average pore volume is 0.25cm 3 / g‑0.3cm 3 / g, specific surface area is 50m 2 / g‑54m 2 / g, the effective surface area of ​​the double layer capacitor is 6.2mF / cm 2 ‑6.5mF / cm 2 , the Tafel slope is 46mV / dec‑47mV / dec. Compared with existing catalysts and high entropy alloys, it has a smaller Tafel slope, stronger OER activity, a larger double-layer capacitor effective surface area, and a faster electron transfer reaction rate, that is, it has stronger electrocatalytic performance.

An integrated photodetection semiconductor optoelectronic component (300) for measuring the intensity (I1, I2) of each of two color components (C1, C2) of dichroic light (DL) irradiating the optoelectronic component, comprising: a first SPAD (306) adapted to detect photons within a wide wavelength range, the first SPAD comprising an effective surface area (340) allowing photons to be detected to enter the first SPAD; a second SPAD (308) adapted to detect photons within a wide wavelength range, the second SPAD being arranged adjacent to the first SPAD (306); and a semiconductor optical long-pass filter (310) at least partially covering the effective surface area (340) of the first SPAD. 310) allows the first color component (C1) of the two color components of the dichroic light (DL) to pass through, and blocks the second color component (C2) of the two color components of the dichroic light (DL); an electronic circuit (304) for reading and processing the detection signals (S1, S2) transmitted by the first and second SPADs, the electronic circuit being suitable for: i) providing a first intensity output signal I1 indicating the intensity of the first color component (C1) based on the detection signal (S1) transmitted by the first SPAD; and ii) providing a second intensity output signal I2 indicating the intensity of the second color component (C2) through difference analysis based on the detection signals (S1, S2) transmitted by the first and second SPADs.

A continuous glucose monitor (CGM) sensor includes a glucose oxidation electrode and a counter electrode, and does not include a glucose-specific enzyme. The glucose oxidation electrode includes a nanoporous layer comprising metal nanoparticles. The CGM sensor generates an electrical signal indicative glucose oxidation in a liquid containing glucose, which has a correlation with an effective surface area of the metal nanoparticles in the nanoporous layer. When the CGM sensor is implanted in a subject's body, an AC voltage is applied between the glucose oxidation electrode and the counter electrode, and impedance is obtained. A glucose level for the subject is determined using the impedance without use of information or data related to glucose sensitivity of a sensor or sensors over use or time.

An apparatus and method allow for the facilitation of the absorption of nanoparticles of copper into skin. An uncoated sheet of copper mesh has copper as its major structural material and when placed directly on the skin, the copper mesh is sufficiently flexible to conform to the skin surface. Once positioned, the copper mesh remains in continuous contact with the skin to allow for the release of copper atoms for maximum absorption. The increased effective surface area of the copper mesh allows for a substantially greater amount of copper atoms to be absorbed by the skin. The air permeability of the copper mesh also allows air to pass through the mesh and contact the skin.

The application belongs to the technical field of functional coating materials, and particularly relates to a microcapsule encapsulated repairing agent, an anti-icing coating and a preparation method and application thereof. The microcapsule encapsulated repairing agent is prepared by taking a complex of epoxy resin and microcrystalline wax as a core material, wrapping the core material with an inorganic nanomaterial-graphene composite material to obtain a primary microcapsule, and then performing surface modification on the primary microcapsule with dopamine to form a photo-thermal modification layer. The microcapsule encapsulated repairing agent has a high-density micro-nano protrusion rough structure, which significantly increases the specific surface area of the microcapsule, greatly improves the effective surface area of photo-thermal conversion, and also helps to improve the bonding force between the microcapsule and the coating matrix.

Biologic matrices designed to facilitate wound healing and related methods are disclosed. A matrix comprises a three-dimensional, resorbable collagen scaffold derived from a vascularized portion of a perfusion-decellularized mammalian organ or tissue. The scaffold features a porous structure with a plurality of interconnected pores originating from one or more outer surfaces, which are defined by intact vascular pathways of the perfusion decellularized mammalian organ or tissue. The porous configuration substantially enhances the scaffold's effective surface area, making it at least 5 times greater than that of a non-porous scaffold having equivalent outer dimensions. In certain embodiments, the surface area considering the interconnected pores can be 10 times larger, 15 times larger, or more than the non-porous scaffold of equivalent outer dimensions. The density of the scaffold can range from 2 milligrams per cubic centimeter to 20 milligrams per cubic centimeter, inclusive, further optimizing the matrix's performance for wound healing applications.

The invention discloses a CuO / In2O3 two-dimensional porous nanosheet gas sensitive material, a gas sensitive element and application of the gas sensitive element. A mixture of deionized water, ethanol and ethylene glycol is used as a solvent, indium nitrate is used as a precursor, and two-dimensional porous flaky indium oxide is obtained through hydrothermal and calcination treatment. Then, indium oxide is used as a matrix, copper oxide nanoparticles are compounded on the surface, and the CuO / In2O3 composite gas-sensitive material is obtained. The composite gas-sensitive material is a two-dimensional porous sheet, the two-dimensional porous sheet has a large effective surface area, the porous structure provides a rapid and continuous charge transfer channel and a gas diffusion channel, and CuO provides an alkaline site for adsorption of acidic H2S gas, so that the gas-sensitive material can be used as a gas-sensitive material for adsorption of acidic H2S gas. The CuO / In2O3 gas sensor has the advantages of high sensitivity, high selectivity, fast response and low detection limit on H2S gas at room temperature. The CuO / In2O3 composite gas-sensitive material prepared by the invention has a wide application prospect in the aspect of H2S gas detection, and the CuO / In2O3 composite gas-sensitive material is simple in synthesis process, short in synthesis time, low in cost and suitable for mass production.

A medical device includes a body and at least one electrode disposed thereon. The electrode includes a metallic substrate, such as a platinum group metal, an alloy of platinum group metals, or gold. The surface of the substrate is modified in a manner that increases its effective surface area without inducing bulk heating. For example, the surface of the substrate can be laser textured and / or coated, such as with titanium nitride or iridium oxide.

Biologic matrices designed to facilitate wound healing and related methods are disclosed. A matrix comprises a three-dimensional, resorbable collagen scaffold derived from a vascularized portion of a perfusion-decellularized mammalian organ or tissue. The scaffold features a porous structure with a plurality of interconnected pores originating from one or more outer surfaces, which are defined by intact vascular pathways of the perfusion decellularized mammalian organ or tissue. The porous configuration substantially enhances the scaffold's effective surface area, making it at least 5 times greater than that of a non-porous scaffold having equivalent outer dimensions. In certain embodiments, the surface area considering the interconnected pores can be 10 times larger, 15 times larger, or more than the non-porous scaffold of equivalent outer dimensions. The density of the scaffold can range from 2 milligrams per cubic centimeter to 20 milligrams per cubic centimeter, inclusive, further optimizing the matrix's performance for wound healing applications.

Described herein are systems, devices, and methods for filtering a fluid. The fluid may include or may be suspected to include a particle. The systems may include a filtration housing and a filter at least partially compressed within the housing. Compression of the filter set by the housing may result in a gradation of effective pore sizes of the filter, allowing for particles of various sizes to be captured within the filter. The compression may additionally increase an effective surface area of the filter and allow for multidirectional flow of the fluid through the filter. The methods for use and manufacture of the filtration systems and devices may include arranging the filter within the housing such that at least a portion of the filter is compressed within the housing and a desired effective pore size of the filter is achieved.

A bipolar electrosurgical devices and methods of use for coagulation and ablation of tissue in a fluid-immersed working space is disclosed. The bipolar electrosurgical device can comprise a handle and an elongated shaft coupled to the handle. The bipolar electrosurgical device can further comprise a bipolar electrode arrangement and a return electrode. The bipolar electrode arrangement and the return electrode can be electrically insulated from one another. The bipolar electrosurgical device can further comprise an adjusting member carried by the elongated shaft. Movement of the adjusting member from a first position toward a second position can contemporaneously increase an effective surface area of the active electrode and decrease an effective surface area of the return electrode.

An inductive coupled window heating system and method having a conductive layer is disclosed. The conductive layer includes at least one slit around the peripheral edges of a targeted heating zone. The slits guide induced eddy currents from areas having high current density to areas having low current density to provide uniform heating in a targeted heating zone. An inductive coupled window heating system having a conductive layer with rough surfaces is also disclosed. Conductive layers with a rough surface increase the eddy current path length and increase the effective surface area or magnetic flux that leads to a higher metallization loss and more heat transferred to the heating zone on the window.

The present invention relates to a multi-tiered tip electrode and a pacing device (e.g., leadless or leaded device) that includes a multi-tiered tip electrode and a fixation helix for securing the pacing device at a patient tissue. The shape of the multi-tiered tip electrode in the axial / longitudinal direction stabilizes the attachment to the patient tissue and improves the electrical connection by providing a more effective surface area.

The present disclosure provides a solar cell, a preparation method thereof and a photovoltaic module, and relates to the technical field of photovoltaics. By setting the P region as a three-dimensional structure with a groove-shaped curved surface, the effective surface area of the P region is increased (rather than simply the geometric projected area) without changing the geometric area of the N region and affecting the depth requirement of the N-type doped phosphorus diffusion layer, thereby significantly improving the emitter current collection efficiency of the solar cell. In addition, the groove-shaped curved surface structure not only increases the effective collection area, but also optimizes the carrier transport path, reduces the lateral transport resistance, and the curved surface structure helps to improve the passivation layer coverage quality, thereby synergistically improving the open-circuit voltage (Voc) and the fill factor (FF), and ultimately improving the photoelectric conversion efficiency of the cell.

The present invention discloses a method for evaluating and analyzing the density distribution state of nanomaterials, which relates to the technical field of nanomaterials. The method ensures the uniformity and representativeness of the sample by preprocessing and regional segmenting the nanomaterial to be tested, and reduces the impact of sample heterogeneity on the evaluation results. The method selects n cluster centers and combines them with a density evaluation data set to determine the number Nks of nanoparticles in each cluster center. A particle distribution coefficient Kfxs is constructed based on the relative abundance Xdfd of the nanoparticles in each cluster center, effectively evaluating the distribution state of the nanoparticles. Feature extraction is used to obtain the effective surface area and porosity of the sample to be tested, and these two parameters are combined to construct a structural state coefficient Jzxs, thereby evaluating the structural characteristics and distribution state of the nanomaterial from multiple dimensions. The overall density distribution evaluation index Zmzs of the sample to be tested is calculated using a trained model to ensure that the model has high prediction accuracy and generalization ability.

The present invention belongs to the field of hydrogen energy and discloses a multi-level hydrogen evolution electrode material loaded with N-doped carbon on MoS2 and a preparation method thereof. The present invention uses MOF nanocones as templates to prepare nitrogen-doped carbon to increase the effective surface area and catalytic active sites of MoS2 loading, thereby preparing a MoS2-based multi-level structure composite catalyst with good electrocatalytic hydrogen evolution activity. The self-supporting NC@MoS2 / CC composite electrode material prepared by the present invention has a multi-level porous structure constructed of interlaced nanosheets / nitrogen-doped carbon. When used for electrocatalytic hydrogen evolution reaction under acidic conditions, it can reach 10mA·cm ‑2 The overpotential of the current density is only 181.2mV, and the Tafel slope is 85.86mV·dec ‑1 It can effectively improve the catalytic activity and catalytic stability of the catalytic electrode.

The invention relates to the technical field of refrigeration system maintenance construction, and particularly discloses a cold coating construction process which comprises the following steps: S1, evaluating the total effective surface area S of metal in a target equipment system, and calculating the volume V of a required cold coating mixed solution; s2, preparing a liquid cold coating mixed solution with the volume of V; s3, continuously injecting the cold coating mixed liquid into the system at an injection pressure P lower than the operation pressure of the area under the condition that the target equipment system is kept in a normal operation state; s4, after injection is completed, the equipment system is kept running continuously, and the cold coating mixed liquid is distributed and forms a protective film on the metal surface through self circulation of the system; and S5, maintaining the continuous operation of the system for 24-72 hours to complete in-situ film formation. The device has the beneficial effects that injection is strictly limited on the low-pressure side, the pressure is controllable, sealing damage and safety risks caused by high-pressure injection are eradicated, and safety and reliability are achieved; the whole process does not need equipment shutdown, and normal production or operation is not affected.

The utility model relates to the technical field of batteries, and particularly provides a pole piece and a battery cell. The pole piece comprises a current collector and an active substance layer arranged on the current collector, the active material layer comprises a frame area and an in-frame area, a plurality of concave parts arranged at intervals are arranged in the in-frame area, and the frame area comprises a convex frame which is located on the edge of the in-frame area and arranged in the circumferential direction of the in-frame area. The electrode plate can significantly increase the effective surface area of the active material layer, provide a larger contact area between an electrode material and an electrolyte, improve the contact efficiency between the electrode material and lithium ions, and promote the diffusion and migration of the lithium ions in the electrode plate, thereby improving the energy density and power density of the battery, and improving the service life of the battery. The charge-discharge speed and the cycle stability of the battery are improved, the polarization phenomenon of the electrode plate is reduced, and the use performance of the battery is improved.

The invention relates to the technical field of cigarette punching quality detection, in particular to a cigarette laser punching area characterization evaluation method, which comprises the following steps: firstly, collecting cigarette filter tip surface punching three-dimensional form point cloud data, and preprocessing the collected cigarette filter tip surface punching three-dimensional form point cloud data; converting the preprocessed point cloud data of the punching three-dimensional form into an image, identifying a punching area in the image by using an image processing technology so as to identify positioning information of the punching area, and then cutting the punching area corresponding to the positioning information of the punching area in the image based on the positioning information of the punching area so as to obtain a cut punching area corresponding to the positioning information of the punching area; the method comprises the steps of cutting a perforated area image, converting the cut perforated area image into point cloud data, finally calculating the upper surface area and the effective surface area of one micropore in the cut perforated area image by using an integral algorithm based on the cut related point cloud data, and calculating the effective inner surface area of the micropore based on the calculation result of the upper surface area of the micropore and the calculation result of the effective inner surface area of the micropore. And evaluating the cigarette punching quality.

The utility model discloses a wet curtain component and humidifier relates to humidifier technical field, the wet curtain component includes a plurality of curtain core that stack up and down, the material of curtain core is washable material, and the middle part of a plurality of curtain core together encloses the wind channel that extends up and down, and the wind channel is connected with the wind channel. A plurality of air inlet channels communicated with the air passing channels are formed between every two adjacent curtain cores, a water storage tank extending in the circumferential direction of the curtain core is formed in the upper end face of each curtain core, and a plurality of water passing openings distributed at intervals in the circumferential direction of the water storage tank are formed in the inner wall of each water storage tank. Water in the water storage tank is distributed at the bottom of the water storage tank in the circumferential direction and then enters the multiple water passing openings to flow out. When the water in the lower water tank is guided into the curtain cores, the water needs to be distributed on the periphery of the bottom of the water storage tank and then flows out of the water passing openings in a concentrated mode, so that the water distribution action is conducted after a certain amount of water needs to be stored in the water storage tank, it is guaranteed that water can pass through each water passing opening, and the water distribution uniformity is guaranteed; therefore, the effective surface area of water evaporation is increased.

The invention belongs to the technical field of sensing materials, and particularly relates to an electrochemical sensing material as well as a preparation method and application thereof. The invention provides an electrochemical sensing material. The electrochemical sensing material comprises Ti < 3 > C < 2 > T < x >, Pt and Na < + >, wherein the Pt and the Na < + > are positioned between layers of the Ti < 3 > C < 2 > T < x >; the surface of the Ti < 3 > C < 2 > T < x > is of a two-dimensional layered structure with a folded structure. According to the electrochemical sensing material provided by the invention, the surface of Ti3C2Tx is provided with wrinkles, an uneven topological structure is formed on the nanoscale, the effective surface area of an electrode in contact with an electrolyte is greatly increased, the transfer of charges can be remarkably improved, and the electrochemical performance is further improved.

A brushing mouthpiece is disclosed. The brushing mouthpiece has a boot seal and valve disposed between the handle and the brush head, which when a pressure on an inside of the bladder is less than a pressure on an outside of the bladder, the bladder draws air from the atmosphere into the pneumatic actuation system removing the negative internal pressure differential in the pneumatic actuation. A brushing mouthpiece may also have an S-convolute disposed in a membrane and adapted to enable paddle travel with minimal strain experienced by the membrane, while substantially minimizing an effective surface area of the membrane and substantially maximizing an effective surface of a paddle.

The invention relates to preparation and application of a Cu (at) s-Ti3C2Tx composite material. The composite material obtained by the invention is used for analyzing and detecting dopamine by an electrochemical method. The invention designs and prepares an elemental copper nanoparticle loaded thin-layer Ti3C2Tx nanosheet composite material (Cu (at) s-Ti3C2Tx), a LiF / HCl etching method is utilized to prepare multiple layers of Ti3C2Tx, an ultrasonic stripping method is utilized to prepare thin-layer Ti3C2Tx nanosheets (s-Ti3C2Tx), and finally, copper nanoparticles are grown on the s-Ti3C2Tx in situ to form the Cu (at) s-Ti3C2Tx composite material. The s-Ti3C2Tx has a larger effective surface area, and due to the good catalytic activity of the copper nanoparticles and the synergistic effect of the copper nanoparticles and the s-Ti3C2Tx, the Cu (at) s-Ti3C2Tx composite material has excellent electrocatalytic activity. The prepared material has a wide linear range (0.8-150 [mu] M), a low detection limit (0.267 [mu] M) and a high specific surface area (2.16 cm < 2 >) on dopamine detection. The preparation process is simple and convenient, the cost is low, and the obtained material has good electrochemical sensing performance on dopamine.

Thermal energy transmission from a cryocooler cold finger is enhanced by means of a high thermal conductivity material used for or placed adjacent the cold finger end cap. In addition, the actual or effective surface area contacted by the working gas proximate the endcap is increased, thereby increasing the convective heat transfer coefficient. These features permit the coolest gas expansion space in the cold finger to be provided within the highly thermally conductive end cap, unlike many conventional designs in which the cold finger of low thermally conductive metal forms the expansion space side walls and the endcap forms only the axially facing outer surface in contact with the cooled equipment. Having the expansion space built into the high thermally conductive end cap reduces the temperature drop between the load to be cooled and the gas (e.g., helium), thus increasing the thermodynamic cycle efficiency.