A method of agglomerating nanoparticles to form larger agglomerates is shown. The nanoparticles are mixed with a resin to form a first mixture (803) of agglomerates, having sizes over a range that includes agglomerates considered to be too large, suspended in the resin. A bead milling cylinder (802) produces a second mixture (808) with fewer large agglomerates. A filter (1001) removes the remaining large agglomerates. The resulting mill base is cut with a solvent before deployment.

Systems and methods for generating a compressive pre-load in a resistive touch center through the lamination of differently curved surfaces. The system comprising a processor; and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising: determining a first curvature of a rigid back layer comprising a grouping of sensor electrodes; determining a second curvature of a flexible surface layer; and as a function of the first curvature and the second curvature facilitating lamination of the flexible surface layer to the rigid back layer.

An electromechanical sensor includes: an elastic carrier arranged to extend when subjected to an external mechanical load; a sensing sheath arranged at least partially around and along the elastic carrier; wherein the sensing sheath includes an electrically resistive element having a first electrical resistance operable to change upon a change of a dimension of the elastic carrier.

Pressure/strain piezoresistive are described that include a poled piezoelectric polymer such as PVDF or P(VDF-TrFE) and graphene. The poled piezoelectric polymer and the graphene are electronically coupled to form a heterojunction and provide an ultra-high sensitivity pressure/strain sensor. The sensors can be carried on a flexible supporting substrate such as PDMS or PET to exhibit high flexibility. The materials of formation can be biocompatible and the sensors can be wearable or implantable.

A pressure sensor comprises a base layer, a supporting structure arranged on the base layer, an elastic layer disposed above the base layer and the supporting structure, having a curved lower surface that is recessed away from the base layer, wherein the curved lower surface, the supporting structure and the base layer define a cavity with an arched top wall. A first electrode, a second electrode, and an elastic body are all arranged within the cavity, such that when the elastic layer is elastically deformed in the direction of the base layer, the elastic body electrically connects the first electrode with the second electrode, so as to generate a first signal related to the elastic deformation of the elastic body.

In one example a bend sensor is disclosed. The bend sensor extends into a media tray. The bend sensor has a tip where a deflection amount of the tip indicates a media parameter.

Embodiments of the present disclosure disclose a variable resistance and a manufacturing method thereof, and the variable resistance is a variable resistance with continually adjustable resistance value. This variable resistance comprises: an elastic insulation envelope and conductive particles filled in the elastic insulation envelope. The manufacturing method of the variable resistance comprises: filling conductive particles into an elastic insulation envelope with an opening; and sealing the opening of the elastic insulation envelope.

A pressure sensitive electrically conductive composition comprises a contained quantity of magnetite particles, wherein the quantity of magnetite particles includes a distribution of particle sizes between sub-micron and tens of microns, and wherein the magnetite particles have a plurality of planar faces, adjacent planar faces connected at a vertex, the particles each having a plurality of vertices wherein the magnetite particles are irregular in shape and have a low aspect ratio.

A method includes coating at least one conductive element of an electronic device with an electrically non-conductive thixotropic liquid. An electronic device includes a first layer including an upper conductive element, a second layer including a lower conductive element, and a spacer positioned between the layers. The first layer, the second layer, and the spacer define a sensing chamber in which the upper and lower conductive elements move to vary the resistance of the electronic device. A non-conductive thixotropic liquid is present within the sensing chamber. Movement of the layers toward each other displaces the thixotropic liquid from an initial state coating at least one of the conductive elements to permit contact between the conductive elements, and movement of the first layer and the second layer away from each other returns the thixotropic liquid to the initial state.

A composite material having a force- or pressure-dependent resistance comprises particles of inorganic chalcogenide dispersed in a polymer. The chalcogenide may be a pyrite such as iron pyrite, copper iron pyrite or a mixture of the two. The composite material may be used in a force or pressure sensor, for example in a wearable device.