210 results about "Sensor materials" patented technology

The invention provides a multi-source data fusion intelligent control method for logarithmic curved surface machining, and relates to the technical field of data processing, and the method comprises the steps: 1, in a product machining process, through a geometric morphology detection sensor, a material characteristic perception sensor and a cutting state monitoring sensor, a cutting state is detected; obtaining multi-dimensional data reflecting the geometric morphology, the material characteristics and the cutting state of the curved surface, and forming a multi-source information stream; 2, carrying out real-time fusion on the multi-source information flow, and generating a comprehensive state description through space-time alignment and association of sensor data; the method comprises the following steps: converting data reflecting the geometric morphology of a curved surface into a point cloud set, identifying a feature point of a curvature mutation region as an original reference point, constructing two space reference straight lines, and calculating a space included angle between the two space reference straight lines to obtain an included angle region; through multi-source data fusion and intelligent control, the precision, efficiency and stability for logarithmic curved surface machining are improved, and the machining cost and the error rate are reduced.

The invention belongs to the field of electrochemical biosensors, discloses a preparation method of an electrochemical biosensor capable of being used for multi-mode sweat detection, and particularly provides a single-electrode multifunctional arrangement method in a three-electrode system. A sensor material with high sensitivity and high selectivity is prepared, then the sensor material is printed through screen printing and assembled into a portable device to achieve simultaneous detection of multiple biomarkers in sweat, and the preparation method comprises the steps of selection and modification of an electrode material, sensor assembly and integration of a signal acquisition and analysis system. Through innovative material design and process optimization, the sensor not only can acquire information of various biomarkers in sweat in real time, but also can provide reliable data analysis, and shows excellent long-term stability and anti-interference capability in practical application. The technology provides an effective and reliable solution for real-time health monitoring.

The invention belongs to the technical field of preparation of sensor materials, and particularly relates to a room-temperature formaldehyde sensor material based on a catalytic principle as well as preparation and application of the room-temperature formaldehyde sensor material. The polyphenol is adsorbed on the surface of the semiconductor metal oxide through chelation, then noble metal ions are introduced, and the polyphenol on the surface of the semiconductor metal oxide can capture the noble metal ions and reduce and stabilize the noble metal ions on the surface of the semiconductor metal oxide; the noble metal nanoparticles are anchored on the surfaces of the semiconductor metal oxide nanoparticles, the original morphology of the semiconductor metal oxide is maintained, and the noble metal nanoparticles are loaded on the surfaces of the semiconductor metal oxide nanoparticles. The nano composite material not only has the intrinsic electrical and thermodynamic properties of semiconductor metal oxide, but also combines the catalytic characteristics of noble metal nanoparticles, so that the lower detection limit of formaldehyde is reduced to 3ppb, and the sensitivity of the sensor is remarkably improved. The preparation method of the room-temperature formaldehyde sensing material is simple and suitable for large-scale production, the raw materials are simple and easy to obtain, the cost is low, and the materials are environment-friendly.

The invention discloses an optical fiber silicon-based microstructure underwater acoustic sensor which is a non-intrinsic F-P air microcavity probe with optical signal interference formed by an optical fiber end face and a silicon-based thin film, the characteristic that the silicon-based thin film is sensitive to sound pressure signals is used for picking up sound pressure changes in a liquid sound field environment, the sound pressure changes are converted into the variable quantity of an optical signal interference phase, and the optical fiber silicon-based microstructure underwater acoustic sensor is obtained. Reducing a sound pressure signal in the liquid sound field through a detection demodulation algorithm; the microcavity probe is packaged by using an organic material thin shell structure, so that the hydrostatic pressure resistance of the underwater acoustic sensor is improved to adapt to application in a deep water environment; the optical fiber silicon-based microstructure underwater acoustic sensor comprises an acoustic sensing silicon microstructure, a microstructure sensing probe and a sensor pressure-resistant structure, according to the acoustic characteristic design of the acoustic sensing silicon microstructure, silicon oxide / silicon nitride and other materials are used as sensing materials, and membrane external stress recovery is achieved through internal stress residues. The method is easy to implement in design process, flexible in application and high in environmental adaptability, and can be applied to noise monitoring and target detection in various complex scenes.

The invention relates to the technical field of pressure sensors, and discloses a structural design method and device applied to a brake pressure sensor, and the method comprises the steps: analyzing the material performance of a sensor material, and analyzing the material demand of a brake demand related to the sensor material; the material matching degree between the material performance and the material requirement is calculated, and the structural material of the brake application scene is determined from the sensor materials; querying geometric parameters of the assembled sensor, and performing force-electricity simulation on the assembled sensor through the piezoelectric constitutive model; the brake sensitivity of the assembled sensor is calculated according to the force-electricity simulation result, the brake failure rate of the assembled sensor is calculated according to the force-electricity simulation result, and defect reason analysis is conducted on the brake sensitivity and the brake failure rate; and querying a structure optimization material of the assembled sensor, and performing structure optimization on the assembled sensor by utilizing the reason analysis result and the structure optimization material. According to the invention, the structural design and materials can be optimized, and the sensitivity and environmental adaptability of the sensor are improved.

The invention relates to an indium oxide carbon monoxide gas-sensitive material as well as a preparation method and application thereof. The gas-sensitive material has a heterogeneous three-stage hierarchical structure, is prepared from indium oxide sheets with a hollow structure consisting of small-diameter nanorods and a high specific surface area, shows rich active crystal faces and adsorption oxygen bonds, can effectively adsorb more oxygen and carbon monoxide gas molecules, and promotes the oxygen and carbon monoxide gas molecules to generate a redox reaction with hydrogen on the surface of the material, so that the gas-sensitive material has a good application prospect. Therefore, the detection precision of the carbon monoxide gas is obviously improved. According to the preparation method, toxic materials are not used, preparation is safe, the synthesis route is simple, repeatability is good, cost is low, and a new thought is provided for efficient and environment-friendly preparation of high-performance gas sensitive sensor materials.

The present invention discloses a flexible pressure sensor, whose structure sequentially includes: a first electrode layer, a first compressible resistance layer, a flexible conductive polymer layer, a second compressible resistance layer, and a second electrode layer. The first electrode layer and the second electrode layer are conductive fabrics and are connected to an external measurement circuit. The first compressible resistance layer and the second compressible resistance layer are conductive materials with a plurality of equally spaced protrusions, and the conductive materials are flexible and compressible. The resistance value of the flexible conductive polymer layer is constant. This solution constructs a special pressure sensor structure by using flexible materials, enabling the sensor to be applicable to pressure detection in any flexible environment. At the same time, the sensor material is lightweight, highly sensitive, and low in manufacturing cost, and can be widely applied in the fields of wearable devices, medical rehabilitation, automotive safety monitoring, etc.

The invention relates to the field of piezoelectric ceramic materials, in particular to a piezoelectric ceramic sensor material and a preparation method thereof, the chemical structural formula of the piezoelectric ceramic sensor material is as follows: (1-x) Pb1-yAy (ZrzTi1-z) O3-xSm (Al1-uBu) O3-alpha wt% CuO-beta wt% LiFA is a rare earth element, B is a transition metal element, 0.01 < = x < = 0.1, 0.01 < = y < = 0.1, 0.25 < = z < = 0.75, 0.01 < = u < = 0.1, 0.1 < = alpha < = 1, 0.1 < = beta < = 1, the piezoelectric ceramic sensor material prepared by the invention not only has excellent piezoelectric property, but also has higher Curie temperature, and can be widely applied to various high-temperature sensors.

Sensors containing one or more metal oxides as the sensor material are used for detecting pathogen-derived VOCs, e.g., VOCs emitting from infectious wounds. The metal oxides may contain one or more metal elements selected from aluminum, antimony, bismuth, boron, cerium, chromium, cobalt, copper, gold, indium, iridium, iron, lanthanum, lead, manganese, molybdenum, nickel, niobium, osmium, palladium, platinum, rhodium, ruthenium, selenium, silicon, silver, tantalum, tellurium, terbium, tin, titanium, tungsten, vanadium, ytterbium, yttrium, zinc, and zirconium. A sensor device may have one or more sensors, which detects and records a variety of VOCs that are indicative of existence of pathogens, and the pathogens are associated with dieses and / or infections.

The invention discloses a bimetallic Ag and Pd loaded WO3 material and a preparation method thereof, and relates to the technical field of sensor material preparation, and the preparation method comprises the following steps: 1, dissolving a tungsten source in an ethanol solution, mixing, hydrolyzing, aging, precipitating, washing, drying, calcining and cooling; 2, adding deionized water, adding a silver source solution and a palladium source, adding ascorbic acid, and stirring; 3, centrifuging, washing with ethanol and deionized water, and drying; 4, selecting a gold interdigital electrode with aluminum oxide ceramic as a substrate as a base electrode material, dipping the WO3 nano-particle dispersion liquid by using a line drawing pen, and uniformly coating the WO3 nano-particle dispersion liquid on the surface of the interdigital electrode; and 5, electrode drying and heat treatment. The efficient gas sensing material is prepared through the preparation method which is easy to operate, environmentally friendly and economical, and the gas sensing material has the advantages of being high in sensitivity, rapid in response, good in selectivity and the like at the low working temperature.

The invention discloses a mechanical force-induced fluorescence discoloration sensor material as well as a preparation method and application thereof, and relates to the technical field of organic synthesis and fine chemical engineering. The preparation method comprises the following steps: step 1, carrying out heating reaction on 4-(1, 2, 2-triphenyl vinyl) benzaldehyde, 3-(2, 2-dicyano-1-(3, 4-diaminophenyl) vinyl) benzene-1-yl and a catalyst to prepare a compound 1-1; and 2, carrying out heating reaction on the obtained compound 1-1 and methyl iodide under the action of alkali and a solvent, and analyzing and purifying to obtain a compound 1-2. The compound disclosed by the invention is low in preparation cost, simple and convenient to operate and simple in method, the compound shows the material characteristic of mechanical force-induced fluorescence discoloration and can be applied to the fields of sensors, dyes, anti-counterfeiting and the like, and meanwhile, the synthesis method can be used for synthesis in the fields of fine organic chemical engineering such as luminescent materials, printing and dyeing technologies and the like.

A sensor comprising one or more metal oxides as sensor material is used to detect pathogen-derived VOCs, such as those released from an infected wound. The metal oxides can comprise one or more metal elements selected from aluminum, antimony, bismuth, boron, cerium, chromium, cobalt, copper, gold, indium, iridium, iron, lanthanum, lead, manganese, molybdenum, nickel, niobium, osmium, palladium, platinum, rhodium, ruthenium, selenium, silicon, silver, tantalum, tellurium, terbium, tin, titanium, tungsten, vanadium, ytterbium, yttrium, zinc, and zirconium. The sensor device can have one or more sensors that detect and record various VOCs indicative of the presence of pathogens, which are associated with mortality and / or infection.

The invention discloses preparation of a Tm-Cu-In < 2 > O < 3 > composite material, a gas sensor based on the Tm-Cu-In < 2 > O < 3 > composite material, a preparation method and application, and belongs to the technical field of gas sensor materials. Thulium chloride, copper sulfate, indium salt and an organic solvent are used as raw materials, In2O3 is doped with double metal elements Cu and Tm, a composite gas sensitive material is prepared, and a gas sensor based on the composite gas sensitive material is obtained. Compared with other In2O3-based H2S sensors, the gas sensor prepared by the invention has high sensitivity, high selectivity and good stability to H2S, and still has relatively high response in a high-humidity H2S environment, so that the gas sensor has excellent gas sensitivity to H2S gas in the environment. The sensor is simple in production process, low in energy consumption in the production process, low in cost and suitable for industrial batch production.

The invention relates to a screening method and device of a lithium battery thermal runaway escape gas sensor. The method comprises the following steps: acquiring response recovery data obtained by performing a gas sensitive experiment on a plurality of sensors to be evaluated; according to the response recovery data, calculating to obtain a performance index; based on each performance index, executing a plurality of evaluation algorithms on each to-be-evaluated sensor to obtain a plurality of evaluation scores; performing fusion processing on the plurality of evaluation scores of each to-be-evaluated sensor to obtain a comprehensive evaluation score of each to-be-evaluated sensor; and selecting the to-be-evaluated sensor meeting a preset condition as a target sensor according to each comprehensive evaluation score. According to the method, multiple evaluation algorithms are adopted to evaluate a large number of sensor samples, and complex performance data are converted into visual quantitative scores, so that rapid comparison and screening among different types and batches of sensors are facilitated, and a sensor material or product with optimal performance can be found more accurately.

The invention belongs to the technical field of preparation of gas sensor materials, and particularly relates to a method for preparing a room-temperature MXene-based ethanol sensor material by using supercritical carbon dioxide. The method comprises the following steps: firstly, carrying out hydrothermal reaction on titanium dioxide powder to obtain titanium nanotubes (TNTs); then carrying out high-temperature calcination on the TNTs; and then the calcined titanium nanotube and MXene are stirred to react under the supercritical COC condition, and finally MXene composite material powder is obtained. The material shows excellent response performance to ethanol gas at room temperature, including short response and recovery time (lt: 5 seconds) and resistance change rate as high as 42%. According to the invention, the electrical conductivity of MXene and the gas sensitivity of TiOnanotubes are fully exerted, the supercritical treatment means is combined, the preparation process is simple, convenient, green and environment-friendly, and the method has a good industrial application prospect and is especially suitable for the field of VOCs gas sensors which are low in power consumption and operate at room temperature.

The invention discloses a large-size high-precision torque sensor elastomer which comprises the following components: C, Si, Mn, P, S, Cr, Ni, Mo and Fe. The preparation method comprises a vacuum arc furnace smelting process, a forging and post-forging normalizing and high-temperature tempering process, a rough machining process, a quenching and tempering heat treatment process, a cold treatment process and a finish machining process, wherein the finish machining process and the vibration aging destressing process are carried out according to the size requirement of the sensor elastomer part. According to the method, residual stress is removed and a sensor material structure is strengthened and stabilized through a three-stage aging process of heat treatment aging, cold treatment aging and external field vibration aging; the elastomer prepared by the method combines good structure stability, relatively small thermal expansion coefficient and excellent comprehensive performance, can meet the use requirements of different specifications, large sizes and high-precision torque sensor elastomers, can work in atmospheric environments of different atmospheres, and can be used for mass production of elastomer materials.

The present invention relates to a method for crystallization of a metal oxide thin film by using thermal dissipation annealing (TDA) and exhibits an effect enabling high-temperature thermal annealing, which is essential for the performance improvement of a semiconductor material, a sensor material, and the like deposited on a thin-plate substrate, even without degrading the performance of the thin-plate substrate. In addition, a metal oxide thin film prepared by the method of the present invention is in the form of a two-dimensional nanosheet, and thus may have a low defect density (high crystallinity) and a wide surface area. Accordingly, based on the improved photosensitivity and photoreactivity, the metal oxide thin film may be utilized in a high-performance photoelectric device.

The invention discloses an alginate-based high-entropy metal oxide as well as a preparation method and application thereof, and belongs to the technical field of gas sensor materials. The preparation method comprises the following steps: mixing a high-entropy metal salt solution of at least five metal sources with an alginate solution to prepare alginate-based high-entropy metal aerogel, and then wrapping the alginate-based high-entropy metal aerogel with carbon cloth and rapidly heating the alginate-based high-entropy metal aerogel by using a Joule thermal method to obtain the nanosheet-shaped alginate-based high-entropy metal oxide. The material can be used for high-sensitivity detection of ethanol gas. The preparation method provided by the invention is green, simple and rapid, has a good sensing response effect in ethanol gas detection, and the sensing material has good stability, can be recycled for multiple times, and has a good application prospect.

The invention discloses a manufacturing and testing method of a composite structure flexible sensor based on laser direct writing, and belongs to the field of flexible sensors. According to the invention, through selection of various sensor materials and corresponding microstructure design, the contact relation change of the conductive microstructure is realized; by adopting the manufacturing process of processing the micro-channel through laser direct writing and injecting the liquid metal, direct construction of a three-dimensional circuit can be realized only by using femtosecond laser, and patterning of any complex liquid metal can be realized. By adjusting laser parameters, rough textures are left at the bottom of a channel during PDMS surface processing, and the contact area of liquid metal is increased; the rough microstructure is adopted to provide a larger contact surface area of the rough microstructure and the liquid metal, and the sensitivity of the microstructure-liquid metal composite structure flexible sensor to pressure change is improved; the rough microstructure can be kept in contact with a target even on a bent or uneven surface, so that the accuracy and consistency of the flexible sensor on pressure measurement are improved.

The invention belongs to the technical field of sensor materials and malathion detection, and relates to a nano-silver modified covalent organic framework composite material, a preparation method and application thereof, and an electrochemical aptamer sensor. The preparation method comprises the following steps: S1, dissolving 1, 3, 5-tri (4-aminophenyl) benzene and 2, 5-divinyl-1, 4-phthalaldehyde in acetonitrile, adding a catalyst to carry out condensation reaction, standing, separating, washing and drying to obtain a covalent organic framework material; s2, dispersing the covalent organic framework material and silver nitrate in water, adding sodium citrate after ultrasonic dispersion, and washing and drying to obtain the nano-silver modified covalent organic framework composite material. The nano-silver modified covalent organic framework composite material prepared by the invention shows excellent crystallinity, extremely high porosity and good conductivity, and realizes high-sensitivity, rapid and accurate quantitative analysis of malathion in traditional Chinese medicinal materials.

The invention discloses a preparation method of an alpha-Fe2O3 / SnO2 nanoneedle heterojunction gas sensitive material, and belongs to the technical field of preparation and application of inorganic composite materials. Adding a mixed solution of ferric chloride and sodium sulfate and the ceramic tube into a reaction kettle, carrying out hydrothermal reaction at 120-160 DEG C for 10-14 hours, taking out the ceramic tube after the reaction is finished, drying and annealing to obtain a ceramic tube loaded with alpha-Fe2O3 nanoneedles; dissolving tin chloride and urea in water to obtain a mixed solution, adding the mixed solution and the ceramic tube loaded with the alpha-Fe2O3 nanoneedle into a reaction kettle, carrying out hydrothermal reaction at 80-100 DEG C for 1-6 hours, taking out the ceramic tube after the reaction is finished, drying and annealing to obtain the alpha-Fe2O3 / SnO2 nanoneedle composite gas-sensitive material. The preparation method is simple, the product is high in crystallinity and good in stability and is suitable for preparing a high-economical gas sensitive sensor material, and a sensor prepared from the alpha-Fe2O3 / SnO2 nanoneedle heterojunction gas sensitive material can effectively improve the gas sensitive performance of alpha-Fe2O3 and shows an extremely high response value to NO2 while the working temperature is reduced.

The invention provides a method for optimizing a detection sensing material for trace characteristic gas in transformer oil, and belongs to the technical field of detection of gas in transformer oil, and the method comprises the following steps: firstly, obtaining basic data of candidate materials, including material composition, atomic structure, electron energy band structure and theoretical gas sensing performance parameters; and establishing a sensing performance prediction model considering the material composition and structure, and training a material-performance correlation model by using a machine learning algorithm. A large number of theoretical material data sets are generated through computer traversal, and multi-dimensional clustering analysis is performed on candidate materials to obtain a clustering center. And carrying out laboratory performance testing by taking a clustering center corresponding material as a to-be-tested set, and collecting actual performance data. And carrying out multi-generation iterative optimization on the material with the optimal performance by adopting a genetic algorithm to finally obtain the transformer oil trace characteristic gas detection sensing material. The problem that an existing gas sensing material is difficult to meet harsh requirements of an electric power system on online detection of a transformer in the aspects of sensitivity, selectivity and stability is solved.

The invention discloses biological piezoelectric ceramic as well as a preparation method and application thereof, and belongs to the field of implantable and biodegradable sensor materials. A biological ceramic material hydroxyapatite (HA) and a lead-free piezoelectric ceramic material sodium bismuth titanate (BNT) are compounded, the obtained HA / BNT biological piezoelectric ceramic shows remarkable biodegradability and certain piezoelectric property, and a certain amount of potassium and lithium ions are further doped in BNT, so that the biodegradability of the HA / BNT biological piezoelectric ceramic is improved, and the biodegradability of the HA / BNT biological piezoelectric ceramic is improved. The obtained HA / BNKLT biological piezoelectric ceramic also shows remarkable biodegradability and certain piezoelectric property, and the two kinds of biological piezoelectric ceramics can meet the self-power supply requirement of an implantable biodegradable sensor. In addition, the biological piezoelectric ceramic provided by the invention can avoid the potential toxicity problem caused by barium ions and niobium ions in the prior art.

The invention relates to an adsorption and health state estimation method of a modified material in lithium ion battery thermal runaway gas, and belongs to the technical field of battery health management. The method comprises the following steps: S1, constructing a gas sensor material, namely an indium selenide (InSe) single layer, and constructing a CuO-InSe single layer through copper oxide (CuO) modification; s2, calculating adsorption energy, an energy band gap and transfer charges based on a density functional theory; s3, calculating the desorption time of the adsorption system at different temperatures according to the adsorption energy, wherein the desorption time is used for proving the potential of CuO-InSe as an adsorbent of CO, C2H2 and C2H4 and a sensor of CO2; a quantitative model for fitting the energy band gap and the adsorption energy with the CO partial pressure is established, the lithium ion battery health state estimation is realized based on the model, and a solid theoretical basis and a practical model are provided for predicting the failure stage of the lithium ion battery and designing an intelligent early warning system.

The invention relates to a receptor material and a preparation method thereof, and belongs to the technical field of receptor materials. The receptor material comprises the following chemical components in percentage by mass: 40-55% of Ni, 0.1-1.0% of Cu, 0-15% of Co, and less than or equal to 0.1% of C, Si, Mn, Cr, Mo, Al, P and S in total content. According to the embodiment of the invention, the Curie temperature, the resistivity and the saturation induction density of the material are accurately regulated and controlled by adjusting and optimizing the content of each element, and the performance requirements are met: the Curie temperature is 400-550 DEG C, the resistivity is 0.018 * 10 <-6 > omega.m to 0.25 * 10 <-6 > omega.m, and the saturation induction density is gt; and 1.4 T.

The invention discloses an ecological environment monitoring method based on big data. The method comprises the following steps: acquiring a water body in a to-be-monitored area; performing data acquisition on the water body starting nano composite material to obtain a large amount of original data; transmitting the large amount of original data to a big data center; the server of the big data center classifies the large amount of original data according to the format of transmission equipment number-collection time-collection spatial position and stores the data in a database; preprocessing the mass data in the database to obtain a standard data set in which multiple indexes are associated with time and space; and performing data analysis on the standard data set to obtain components of the water body sample. For water body monitoring, the response speed of a sensor material to pollutants such as heavy metal ions and pesticide residues is low, and the water quality change condition cannot be timely and accurately reflected, so that innovation and breakthrough are performed from the aspects of physical and chemical materials to construct a more perfect ecological environment monitoring system.

The present invention discloses a H2 sensor material based on SnO2-doped graphene aerogel and a preparation method. The material comprises mixing graphene oxide with N,N-dimethylformamide and water to form a mixed solution, adding the mixed solution to a tin salt solution, performing a solvothermal heat treatment, and then calcining the solution in a muffle furnace. The present invention dopes the graphene aerogel with SnO2 nanoparticles. The graphene aerogel structure modifies the operating characteristics of the tin dioxide material, resulting in a sensor material with high gas sensitivity, good selectivity, and stability. This reduces the sensor's operating temperature and device power consumption, resulting in ultrahigh sensitivity, anti-interference performance, and good resistance to electrolyte corrosion. The material has broad application prospects in the future field of thermal runaway early warning technology for lithium-ion batteries.

This application discloses an embedded whole-cell biosensor, its fabrication method, and its application in machine learning-assisted mercury ion detection, belonging to the field of sensor materials and detection technology. This sensor encapsulates *E. coli* expressing green fluorescent protein (GFP) in a polyacrylamide / hyaluronic acid (PAAM / HA) hydrogel matrix, enabling highly selective and sensitive detection of mercury ions. It effectively eliminates interference from competing metal ions and can be completely regenerated through EDTA-2Na treatment, allowing for repeated use without performance loss. It maintains a stable fluorescence response for up to three weeks, possesses excellent biocompatibility and biodegradability, minimizing the risk of secondary contamination, and facilitates rapid on-site analysis.

In an embodiment a method includes providing a substrate with an electrical functional layer comprising a plurality of functional regions, wherein the functional regions are electrically addressable independently from each other, wherein the plurality of functional regions comprises at least a first group of functional regions and a second group of functional regions, wherein the first group is different from the second group, and wherein at least one functional region is part of the first group and of the second group and performing a multiple-mask process by applying a first mask on the electrical functional layer, wherein the first mask exposes the functional regions of the first group and covers all other functional regions, applying a first sensor material over the exposed functional regions by sputtering, removing the first mask, applying a second mask on the electrical functional layer, wherein the second mask exposes the functional regions of the second group and covers all other functional regions, applying a second sensor material over the exposed functional regions by sputtering and / or performing a functionalizing treatment in the exposed functional regions and removing the second mask.