The authors determined the optimal PDMS thickness that would allow a sufficient air gap between the membrane and the sensor coil. In this case, the membrane could easily deform and its deflection was measured when an external force was applied.

In this experiment, the authors tested the ability to convert the analog signals from the sensor into digital-frequency signals. They loaded the sensor with 50, 113, and 1000 Pa shown in fig. 4B. These are applied pressures which are commonly experienced by humans throughout the day. The authors found that the number of pulse waveforms increased with increased loading, which is similar to human responses to force stimuli.

After the authors tested the ultralow pressure sensing ability of the sensor, they found that not only could the sensor detect ultralow pressures but that it could also detect pressures over 20 kPa. The means that sensor could also detect heavy objects as well as subtle sensations like wind blowing.

The authors determined that a frequency of 250 kHz produced the largest percent change (500%) in magneto-impedance, thereby yielding the highest sensitivity. This meant that a small force could be detected by the sensor with a high magnetic field sensitivity.

The authors' found this information after their impedance and applied pressure experiment and ant experiment respectively. This showed the very high sensitivity of the sensor at an ultralow pressure range.

The notable advancement in the article referenced here is the application of perovskite material within a monolithic tactile sensor. This material has properties of being ferroelectric and semiconducting which allows it to be made into a light harvesting, self-powered tactile sensor.

After the authors' water drop experiment, they found that the impedance increased with increasing volumes of water. Therefore, the device was able to "sense" the weight of the different volumes of water. They found that the device's detection limit was 0.3 Pa.

After the authors' ant experiment, they found that the sensor was able to detect the ant's movements across the sensor. This confirms the device's ability to detect changing tactile information.

This article displays how a piezoelectric tactile sensor array can be used to help people who have lost their sense of touch gain it back.

To learn more about the use of a piezoelectric tactile sensor array: https://www.cityu.edu.hk/research/stories/2021/04/29/skin-inspired-tactile-sensors-distinguish-diverse-stimuli-and-offer-hope-limb-injuries

In this experiment, the authors created a way to test the sensor's ability to detect changing tactile information. To do this, they placed an ant on the sensor and let it walk around. The authors show the path of the ant on the sensor in fig. 3C. They found that the sensor was able to detect the ant's movements across the sensor. They were also able to detect the movement of the ant's antenna when it was still. The authors show the data from this experiment in fig. 3D.

The artificial skin developed in this article had the ability to sense stimuli in highly variable external environments. It also had the ability to sense skin moisture and temperature.

Next-generation prosthetics is a growing field of research. Current prosthetics are unable to fully restore functionality to an amputated limb. The goal of prosthetics is to help patients recover mobility due to loss of a limb.

To learn more about next-generation prosthetics: https://www.jerseysbest.com/health/smart-prosthetics-state-of-the-art-technology-gives-amputees-more-control-over-their-limbs/

In this experiment, the authors created a different way to test the sensor's detection limits. They dropped different volumes of water on the sensor. The authors found that the impedance increased with increasing volumes of water. This means that the device was able to "sense" the weight of the different volumes of water. They found that the device's detection limit was 0.3 Pa. The authors show the data from this experiment in fig. 3B.

signal or input that evokes a specific functional reaction in an organ or tissue.

Amputation is a life altering event for an individual. It can affect a person's ability to move and interact with their environment. One of the senses lost with the loss of a limb is the sense of touch.

To learn more about amputation: https://www.hopkinsmedicine.org/health/treatment-tests-and-therapies/amputation#:~:text=Amputation%20is%20the%20loss%20or,emotional%20trauma%20can%20complicate%20recovery

The notable advancement in the article referenced here is a stretchable prosthetic skin. The artificial skin made in this reference article had enhanced ability to sense stimuli in highly variable external environments. It also had the ability to sense skin moisture and temperature.

the standard unit of pressure or stress in the International System of Units (SI), equal to one newton per square meter.

connected with the sense of touch

having artificial body parts, especially electromechanical ones.

an artificial body part