**2. Ferroelectrics material and their applications**

Researchers have been developing various forms of sensors with various working principles. The sensor is a simple device, which can measure how much and produce some form of the output of mechanical, electrical and optical output. Today, developmental sensors use computing, communications and connectivity to the web, mobile smart devices and integration clouds added to the sensor capabilities [38]. The development of censorship in the healthcare world was initially widely used in hospitals, but now censorship is widely used by many patients both in public places, individual homes that support their health management. Clarke and Lyons first developed the concept of biosensing in 1962. The concept of glucose biosensor was successfully commercialised in 1975 by the instrument companies Yellow Springs and the American National Standards Institute. Currently, medical industries are massively developing the biosensor as a tool for AIDS testing and home pregnancy, allergy detection. Besides, biosensors are now widely developed for environmental applications such as detection of bacteria, pesticides and heavy metals in water samples [39]. The next sensor development is a MEMS-based sensor. This sensor has a small size accurate, and industries can integrate this sensor into the device ranging from sports hours, electronics, to cars. The U.S Government initiated an accelerated program in the development of MEMS-based sensors in 1990. The technique used was the manufacture of semiconductors, accelerometers (ADXL50) was the first sensor to be sold commercially in 1992 [40]. Currently, the evolution of sensors is strongly influenced by ICT technology, with integration with the microcontroller, wireless communications module and data storage permanently. Industries have supported this technology by the development of sensor systems with a standard architecture. Computing, storage and communication features are used to present multiple sensors with connectivity. The development of the next sensor leads to the sensor connection process to the smartphone or tablet, or connection with the web or cloud storage [40]. So far, we have implemented our ferroelectric technology as automatic switch sensor, infrared sensor, light sensor and temperature sensor, as well as solar or photovoltaic cells, which made for IPB satellite design [5, 7, 11, 18, 19, 27, 32, 36]. There is still a blue ocean of ferroelectric applications yet to be elaborated. It is and hopefully always a bright future.
