The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents possibility of realization of capacitive displacement sensor in additive manufacturing technology. A 3D printing fused filament fabrication approach has been implemented for the creation of sensors structure. Sensor casing for bottom electrode, spacer and top cover were fabricated by employing 3D printer and Polylactic acid filament. Top capacitor's electrode (movable element)...
In this paper a capacitive pressure sensor with two flexible membranes is presented. The sensor consists of two electrodes on membranes, a spacer and an additional dielectric layer between the electrodes. The sensor is fully printed in an ink-jet printing technology using a nanoparticle silver ink. The polyimide foils are used as membranes, a spacer of the sensor and a dielectric isolation layer....
The aim of this work is to investigate the polyimide based capacitive sensor for displacement measurements. The working principle of the proposed sensor is based on the change in the capacitance under displacement of an upper electrode fabricated on a polyimide membrane while the lower electrode is fixed. The nanoparticle silver ink is used for ink-jet printing of the electrodes on the polyimide foils...
Displacement sensors play a key role in many applications. In this paper, an inductive structure is presented which changes its inductance with deformation, which serves as a measure of displacement. The structure itself is produced by ink-jet printing on a flexible polyimide foil, using a conductive silver-based nanoparticle ink. The foil is subsequently cut in such a way to allow for extending in...
The objective of this paper is to investigate a new design of an inductive sensor, and its application for measuring tangential displacement. The sensor consists of one stationary inductor and a movable ferrite plate relative to the inductor. Tangential displacement can be measured as a change in the overlapping area between the inductor and the ferrite plate, while their normal distance is constant...
This paper presents the capacitance change of interdigital capacitor (IDC) by bending test structure (substrate with capacitor). Interdigital capacitor is fabricated in inkjet printing technology with nanoparticle silver ink on a flexible polyimide foil. First set of tests were done by bending printed interdigital capacitor around axis that is parallel to the capacitors electrodes and around axis...
In this work a method for liquid level measurement is presented, with a support of experimental results. The presented liquid-level measurement method uses two sensors: level and reference interdigital capacitors. Proposed sensors are fabricated in low-cost inkjet printing technology with nanoparticle silver ink on a Novele™ coated polyethylene terephthalate (PET) substrate. The sensors comprise a...
In this paper, electrical properties of inkjet printed graphene patterns on a PET-based (Novele™ IJ-220) substrate are presented. Water-soluble graphene conductive ink (Phene plus I3015) was used. Tested samples were printed with up to 12 layers. Desktop inkjet printer with 2000 dpi resolution was used for printing. After that, structures were sintered at 100 °C for 30 minutes. Printed patterns surface...
This paper presents continued research on CPW (coplanar waveguide) meander inductors. The inductors were made in inkjet printing technology. They were printed on polyethylene terephthalate (PET) based substrate (Novele IJ-220), 140 µm thick. Water-based nanoparticle silver ink (Metalon® JS-B25HV) is used for printing. The fabricated inductors have a great value of quality factor (up to 4.2) and high...
In this paper we investigate the possibility of displacement detection by approaching dielectric plate to electrodes of interdigital capacitor. Working principle of this sensor is based on penetration depth of the fringing electric fields above capacitors electrodes and its intersection with dielectric plate. Tests were done with interdigital capacitor and dielectric plates fabricated in Low Temperature...
This paper presents fully inkjet printed CPW (coplanar waveguide) octagonal inductor. The inductor was printed with water-based silver nanoparticle ink on flexible polyethylene terephthalate (PET) substrate. The fabricated structure has small outer dimension (8.5mm × 8.5mm), and value of effective inductance around 20 nH. Measured Q-factor is up to 1, and self-resonant frequency is slightly below...
This paper presents design, modeling and simulation cost-effective RFID (Radio Frequency Identification) tag using ink-jet printing technology. Passive 13.56 MHz RFID tag is based on an inductive-capacitive resonant circuit. Designed RFID tag is part of the ID (Identification) card, which has standard ISO ID1 size (85.60 mm × 53.98 mm). It consists of rectangular spiral planar inductor (antenna) and...
This paper describes a method for measuring strain on a specimen with flexible strain sensor. The sensor is made by ink-jet printing of silver ink on polyimide substrate, in that manner providing a combination of electrical conductivity and mechanical flexibility. When a force is applied on the free end of cantilever beam, three different strain gauges are used to measure flex of the beam. The gauge...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.