Page 22 - ARKEMA_MAG_INNOVATIVE_#1_EN-digital

AI
Actuator: An electronic device that turns energy into another physical phenomenon (movement, heat, light, sound, etc.).
D
Dielectric: An electrical insulator that can store electrostatic energy.
E
Electroactive: Property of a material that converts electrical energy into a different form of energy (mechanical, thermal, etc.) and vice-versa.
Electrocaloric: The property of a material with a temperature that varies (heating, cooling) under the influence of an electric field (the inverse effect of pyroelectricity).
Electrostriction: The elastic deformation of a nonconductive or dielectric material under the effect of an electric field.
Energy recovery system: Used to generate and/ or recover energy from external conditions (mechanical vibrations, pressure, temperature, etc.) to which the system is exposed. The use of electroactive polymers is a particularly innovative means of generating and recovering energy.
F
Ferroelectric: The phenomenon of spontaneous electric polarization takes place in certain materials and is reversible in the presence of an electric field.
Flexography: A relief printing process used particularly in packaging for different applications such as printing on films, papers and cardboard.
Inkjet: The inkjet printing method projects droplets of liquid ink from nozzles on a moving print head. Typically used in office printers.
Infrared: In the electromagnetic spectrum, infrared refers to the radiation between visible light and microwaves.
Internet of Things (IoT): Refers to smart physical objects with their own digital identity that can communicate with one other. Technically, the IoT consists of the digital identification of a physical object by a wireless communications system (RFID/NFC chip, Bluetooth, WiFi).
N
NFC antenna: A passive electronic component that functions without wires or electricity. When placed near an active reader (supplied with energy, such as a phone, card reader, etc.), the antenna picks up its radio signal and uses its energy to power a chip, in order to communicate information (to pair two electronic devices, authenticate a card payment, etc.).
O
Offset: A major trade printing process (all types of publication, packaging, etc.). It can also be used to print on materials such as polymers and metals.
Organic electronics: General electronic component which uses organic materials (polymers) to move electrical charges. These organic conductors, semiconductors, ferroelectric materials, etc. are being used to develop new electronic systems that are thin, lightweight and can be integrated directly into many applications.
HP
Haptics: The scientific study of touch; describes interfaces that produce sensations via touch.
Home automation: Technical systems used to automate different features of the home in terms of security, energy management, communication and so on.
Piezoelectric: The property of a metal that generates an electric current when it is subjected to mechanical pressure or is deformed, and inversely, which deforms or vibrates when subjected to an electric current.
ELECTROACTIVE POLYMERS: HOW DO THEY WORK?
1.Fluorine (F) is extremely electronegative.
Fluorinated electroactive polymers are therefore highly polar.
2.To make a sensor or actuator from electronegative polymer, you print an ink containing the polymer onto
a substrate and an electrode. You dry the ink, then print another electrode over the top. When an electric field is applied, the polymer molecules align themselves
in the same direction. You end up with a polarized film.
HH
C
C
FF
POLARITIES
Non-crystallized area of the PVDF
PVDF molecule
PVDF chain
H Hydrogen
C Carbon
F Fluorine
20
Electrodes
Crystallized and oriented area of the PVDF
GLOSSARY