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US 2026/0287323 A1Published application
High-stretchability and low-hysteresis strain sensing 3d mesostructures
AssigneeUniversity of Southern California
InventorsHangbo ZHAO, Xinghao HUANG
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Abstract
In some examples, a capacitive strain sensor is disclosed. The sensor can include a substrate and a pair of electrodes hingedly connected to the substrate at an inner edge and to each other along an upper edge. Each electrode can include a first panel connected to an upper surface of the substrate and a second panel hingedly connected to the inner edge of the first panel opposite the upper edge. Stretching the substrate can cause the pair of electrodes to hingedly move between a first state and a second state.
Claims20
A strain sensor, comprising:
- a substrate;
- and
- a pair of electrodes hingedly connected to the substrate at an inner edge and to each other along an upper edge, each electrode comprising:
- a first panel connected to an upper surface of the substrate;
- and
- a second panel hingedly connected to the inner edge of the first panel opposite the upper edge;
- wherein stretching the substrate causes the pair of electrodes to hingedly move between a first state and a second state.
4 more elements
A capacitive strain sensor, comprising:
- a first electrode connected to a second electrode, the first and second electrodes comprising:
- a multilayer structure comprising an electrically conductive layer having inner and outer electrically insulating layers;
- and
- an outer polymeric material disposed over the multilayer structure and forming a plurality of panels on the multilayer structure with exposed regions of the multilayer structure interposed therebetween, the panels being arranged in series so that the first electrode is rotatably connected to the second electrode;
- a stretchable substrate attached to the first and second electrodes, at least one panel of each electrode being connected to the substrate,
- wherein stretching the substrate causes the first and second electrodes to rotatably move between a first state and a second state, the second state being defined by at least one panel of each electrode being positioned upwardly away from the substrate and having an uppermost apex of the capacitive strain sensor.
3 more elements
A method, comprising:
- increasing or decreasing an electric field between electrodes of a capacitive strain sensor by moving electrodes of a strain sensor, the sensor including a substrate configured to stretch and hingedly connected to each of the electrodes at an inner edge, wherein each electrode is hingedly connected to each other along an upper edge and includes a first panel connected to an upper surface of the substrate and a second panel hingedly connected to the inner edge of the first panel opposite the upper edge;
- and
- measuring deformation based at least on detected capacitance between the electrodes as the substrate stretches and the electrodes move between one of a plurality of states.
Dependencies are inferred from the claim text.