Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Design Example: Resistive Touchscreen

Design Example: Resistive Touchscreen

A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...

Design Example

Design Example

The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...

Tactile and Chemical Senses

Tactile and Chemical Senses

Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.

Electro-mechanical Systems

Electro-mechanical Systems

Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...

PD Controller: Design

PD Controller: Design

In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Clinical outcomes of Epstein-Barr virus infection/reactivation following CAR-T cell therapy: A systematic review.

Transplant immunology·2026

Same author

HHV-6 reactivation in the era of CAR T-cell therapy: A systematic review of emerging challenges.

Cancer treatment and research communications·2026

Same author

Cytomegalovirus Infection and Clinical Outcomes in Hospitalized Chimeric Antigen Receptor T-Cell Therapy Recipients.

Cureus·2026

Same author

Photoacoustic-Driven Retrieval of Complex Refractive Indices for Absorbing Aerosols.

Analytical chemistry·2025

Same author

Nutmeg Beyond Spice: A Review on Its Therapeutic Potential, Safety and Industrial Promise.

Food science & nutrition·2025

Same author

Tarlatamab-induced immune-related adverse events: Real-world pharmacovigilance study using the FAERS database.

European journal of cancer (Oxford, England : 1990)·2025

Search research articles

Related Experiment Video

Updated: Aug 22, 2025

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

Facile Pressure-Sensitive Capacitive Touch Keypad for a Green Intelligent Human-Machine Interface.

Muhammad Shumail Malik¹, Muhammad Hamza Zulfiqar¹, Muhammad Atif Khan²

¹Department of Biomedical Engineering, Narowal Campus, University of Engineering and Technology, Lahore 54890, Pakistan.

Sensors (Basel, Switzerland)

|November 11, 2022

Summary

This study introduces a green, capacitive pressure-sensitive (CPS) touch keypad made from paper and pencils. This disposable, wireless human-machine interface (HMI) offers an eco-friendly alternative to reduce electronic waste.

Keywords:

capacitive pressure sensors graphite-on-paper green intelligent HMI touch keypad

More Related Videos

An Assessment Method and Toolkit to Evaluate Keyboard Design on Smartphones

An Assessment Method and Toolkit to Evaluate Keyboard Design on Smartphones

Published on: October 5, 2020

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Published on: March 24, 2023

Related Experiment Videos

Last Updated: Aug 22, 2025

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

An Assessment Method and Toolkit to Evaluate Keyboard Design on Smartphones

An Assessment Method and Toolkit to Evaluate Keyboard Design on Smartphones

Published on: October 5, 2020

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Published on: March 24, 2023

Area of Science:

Materials Science
Electronics Engineering
Environmental Science

Background:

Growing demand for human-machine interfaces (HMIs) in electronics.
Environmental concerns associated with non-biodegradable, rigid, and application-specific plastic HMIs.
Prevalence of electronic and plastic waste in landfills and water resources.

Purpose of the Study:

To develop a disposable, wireless, and intelligent HMI solution.
To mitigate environmental damage caused by conventional HMIs.
To promote a circular economy and sustainable electronic waste management.

Main Methods:

Fabrication of capacitive pressure-sensitive (CPS) touch keypads using a facile green process.
Direct writing of graphite-on-paper using readily available materials like paper and pencils.
Optimization of interdigitated capacitive (IDC) touch sensors by analyzing electrode finger parameters.
Customization of the CPS touch keypad for wireless control of a robotic arm based on touch input.

Main Results:

Successful fabrication of a green, disposable, wireless CPS touch keypad.
Demonstration of pressure-sensitive control for robotic arm movement (low pressure for slow speed, high pressure for fast speed).
Validation of the sensor's performance and responsiveness for HMI applications.

Conclusions:

The developed green CPS touch keypad offers a sustainable alternative to conventional HMIs.
This technology has the potential to significantly reduce electronic and plastic waste.
The approach supports the vision of a circular economy and a greener world through eco-friendly electronics.