Material Capacitance TRIZ Cases

See how combining self-capacitance and mutual capacitance sensors in an eating utensil distingu

A laser-etched LC sensor uses inductive coupling for battery-free humidity monitoring, cutting packaging cost and wireless interference.

A laser-ablated spiral inductor and interdigitated capacitor create a low-cost wireless humidity sensor for real-time food packaging monitoring.

A driven shield between nanopore electrodes cuts parasitic capacitance, reducing amplifier noise peaking and improving SNR and time resolution.

A shield driven by the amplifier output cuts parasitic capacitance between nanopore electrodes, improving SNR and time resolution.

A PTFE membrane, one-way valves, and capacitance sensing improve portable breath alcohol measurement speed, accuracy, and ease of use.

An OFET electrochemical sensor replaces slow, complex chromatography to rapidly and selectively detect cannabinoids in liquid or gas samples.

Bias-free capacitive sensing with a palladium electrode improves selective hydrofluoroolefin detection while avoiding false alarms and calibration.

A porous capacitive sensor uses frequency-tuned electrodes to detect methanol, toluene, and acetone with faster response and lower noise at room temperature.

A layered semiconductor, insulation, and gold-oxygen structure lowers ion sensitivity and improves chemical and thermal stability for precise ion measurement.

Projected cursor size changes with hand distance to show mid-air touch height and improve spatial alignment on capacitive displays.

Capacitive sensing checks electrolyte contamination before cell filling, cutting inspection delay, material waste, and faulty battery assembly.

Integrated conductors in a hook-and-loop fastener enable reusable, wash-resistant moisture sensing on hard-to-reach surfaces.

A control gate holds floating-gate potential constant, improving charge and capacitance sensing accuracy across varying fluid, gas, and liquid conditions.

A control gate stabilizes floating-gate potential, improving charge and capacitance sensing accuracy across changing fluid and gas conditions.

Dielectric-coated conductive rollers detect capacitance changes to find and localize non-visible metal foil defects during production.

Capacitance sensing compares airflow changes inside and outside a test chamber to detect dust-blocked passageways with lower energy use.

Overlapping planar electrode arrays boost nanoparticle detection resolution and signal-to-noise while reducing measurements for real-time tracking.

A 3D bonding element in the sensor recess diverts ESD to ground, protecting the signal processing module during PCB processing.

An electrode reads an accessory’s dielectric profile to identify it without embedded electronics, while also enabling future profile storage.

An AC carrier with modulation measures capacitance or transconductance to detect nearby matter with less charge noise and higher accuracy.

AC capacitance sensing detects matter buildup at a sensor surface with stronger signals and less stray-charge noise than charge-based methods.

By turning sensor hysteresis into a usable fingerprint, graphene varactors improve VOC characterization in complex fluid and gas samples.

Dual RFID sensor elements compare shielded and exposed signal changes to detect moisture with fewer false positives in moving environments.

Vertical interdigitated plates, water-permeable surfaces, and varied dielectrics address heat uniformity while expanding humidity sensitivity and redundancy.

A metal plate across spacers shields electrode-based dielectric measurements from ambient interference, improving physical-property accuracy.

A microcantilever uses intermittent motion, capacitance sensing, and calibrated frequency monitoring to detect analyte deposition compactly.

Electrodes induce intermittent beam motion while a microcontroller compares frequency response with calibration data to flag analyte deposition.

This case compares reference and changed-state capacitance to evaluate joint integrity despite form differences and weak bonds.

This case replaces slow ion-selective sensing with fixed-potential redox capacitance measurements for real-time flow monitoring.

A surface-fixed monitoring circuit detects damage through capacitance changes, reducing capacitors and installation work.

An automatic analyzer reuses its dispensing liquid-surface detector to separate used containers from unused ones before disposal.

The dispensing sensor distinguishes reaction-filled containers, reducing waste and disposal delays without dedicated status sensors.

pH-responsive hydrogel swelling changes electrode capacitance, enabling flexible, non-invasive monitoring without sampling delays.

An in-situ assembly process anchors porous graphene oxide onto electrodes to overcome immobilization instability and achieve high sensitivity.

A capacitive humidity sensor paired with a lock-in amplifier demodulates response signals induced by modulated heating power.

A humidity sensing element uses specific electrode spacing and length to modulate capacitance changes for precise measurement.

Cellulose acetate butyrate mixed with hydrophobic filler reduces hysteresis by over fifty percent, stabilizing capacitance variation across humidity ranges.

A sub-ambient vapor sensor uses a cooling member to lower the temperature of a dielectric microporous element for precise capacitance monitoring.

Alternating drive signals and a shield interconnect cancel parasitic capacitance and leakage currents in humidity sensors.

Stacked interconnect electrodes resolve acid damage risks while improving detection accuracy.

Chemi-capacitive sensor measures capacitance changes via carbon nanomaterials, resolving weak resistance signals in mixed gas environments.

An impedance-based immunosensor system detects neutralizing antibodies using interdigitated electrodes and voltage application.

Merging detection electrodes with heating functions eliminates thick insulating layers, reducing hysteresis and response time in capacitive humidity sensors.

Dynamic temperature switching accelerates analyte removal, resolving the trade-off between high sensitivity and prolonged recovery time.

A moisture sensor assembly uses a diverting metallization layer to route electrostatic discharge current away from sensitive signal processing modules.

A sensor circuit switches between detection portions to maintain stable operation.

Capacitive device replaces optical sensors to measure dust concentration via dielectric frequency response, enabling robust analysis in harsh environments.

A capacitive sensor merges pressure and humidity detection using a shared dielectric layer and deformable electrode structure.

An intermediary cap layer prevents oxidation of the amorphous sensitive layer, maintaining structural homogeneity and reliable gas absorption.

A monolithic gas sensor uses segmented capacitive transducers with distinct sensitive layers to generate measurement signals via a readout circuit.