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A platform unit for combined sensing of pressure, temperature and humidity

A platform and pressure technology, applied in the field of platform units, can solve problems such as pressure, temperature and humidity unmet needs

Active Publication Date: 2015-04-29
TECHNION RES & DEV FOUND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] There has been an unmet need for combined sensing of pressure, temperature, and humidity for multifunctional electronics or artificial skin applications

Method used

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  • A platform unit for combined sensing of pressure, temperature and humidity
  • A platform unit for combined sensing of pressure, temperature and humidity
  • A platform unit for combined sensing of pressure, temperature and humidity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0138] Example 1: Sensing temperature and humidity

[0139] Examine the possibility of integrating temperature and humidity sensing capabilities within an MCNP-based touch platform. For this purpose, a nitro-4-trifluoro-methylbenzenethiol (NTMBT) MCNP sensor was placed in a vacuum chamber with a controlled environment. Change temperature or relative humidity (RH) in a stepwise fashion and monitor the corresponding ΔR / R b . Figure 1A gives the ΔR / R of the sensor at increasing temperature b . ΔR / R b It is linear and decreases by 1% for every 1.33°C increase in temperature, which makes this sensor sensitive enough to monitor temperature fluctuations in the surrounding environment. Zoom-in in the temperature regime of 35–39 °C shows that the sensitivity of the NTMBT-MCNP-based sensor is high enough to act as a human body thermometer capable of accurately detecting fluctuations as small as 1 °C or the presence of heat sources near artificial or electronic skin without touch...

Embodiment 2

[0141] Example 2: Effects of Stretching and Bending on Flexible MCNP Sensors

[0142] Examination of gold coated with 3-ethoxythiophenol ligand (ETP-MCNP) on flexible polyethylene terephthalate (PET) substrates by three-point bending test under bending and tensile conditions Nanoparticle pressure sensors. All tests were performed at a room temperature of 20°C ± 1°C and a relative humidity (RH) level of 50% ± 3%. Figure 3F-3G Loaded and unloaded curves of the ETP-MCNP strain sensor on PET substrate are given. The relative resistance response (ΔR / R b , where R b is the baseline resistance with no load applied to the sensor, and ΔR is the R b and the resistance change when a load is applied to the sensor). After stepwise changing the bending level of the PET substrate, the positive or negative change in resistance was linear. When the ETP-MCNP film was placed on the top side of the PET substrate, bending the substrate resulted in the compression of the ETP-MCNP film, whi...

Embodiment 3

[0147] Example 3: Effect of Substrate on Morphology of MCNP Layers and on Related Sensing Properties

[0148] The relative response of the sensors is proportional to the offset (for a particular bending facility). Therefore, the response of the flexible sensor increases when a larger offset is introduced. A certain load sensitivity range is required since large deflections can lead to irreversible changes both to the flexible substrate as well as to the MCNP layer. In this way, high loads can be measured using a thick substrate with a high Young's modulus, and small loads can be measured using a thin substrate with a low Young's modulus.

[0149] The relationship between the properties of the substrate and the MCNP-based load sensor was explored by depositing ETP-MCNP films on the following substrates: (i) substrates with similar composition (e.g., same polymer) but different thicknesses; and (ii) ) substrates of different composition (eg, different polymers) but similar t...

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Abstract

The present invention provides a modular platform unit comprising a plurality of sensors for the combined sensing of pressure, temperature and humidity. In particular, the sensors are composed of a layer of metallic-capped nanoparticles (MCNP) casted on a flexible substrate or a rigid substrate. Integration of the platform unit for artificial or electronic skin applications is disclosed.

Description

technical field [0001] The present invention relates to a platform unit comprising a plurality of sensors comprising metal nanoparticles capped with an organic coating for detecting pressure, temperature and humidity. Background technique [0002] Producing biomimetic artificial or electronic skin requires large-scale sensor arrays capable of sensing pressure, humidity, and temperature with high resolution and low response time. These sensor arrays, designed to provide physical and chemical information of the environment, can be utilized by a variety of applications, such as medical prosthetics and the robotics industry. For example, prosthetic limbs could be covered with artificial or electronic skin to provide users with a sense of touch in the form of varying pressure levels, and robotic limbs could be integrated with artificial or electronic skin surfaces of varying sensitivity to allow autonomous control for handling objects. Robotic surgery, health monitoring, and man...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/00B82Y30/00H01L29/00
CPCG01D21/02G01K7/186B82Y15/00G01K2211/00Y10S977/953G01N27/121G01L1/2281G01L19/0092G01K7/16
Inventor H·海克G·舒斯特M·瑟格夫-巴V·科隆普S·格利克斯曼
Owner TECHNION RES & DEV FOUND LTD
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