Calixarene is a vase-like supramolecule structure with many useful characteristics. For several decades, many studies have been conducted about the characteristics of calixarene that can be applied in fields such as material science, biotechnology and nanosensors. The Langmuir–Blodgett (LB) technique is a powerful method in obtaining a homogenous monolayer or several layers of thin film by controlling the molecular orientation on the air–water surface. Novel characteristics of calixarene have been discovered in applications such as sensing material, water treatment and catalysts. Calixarene also has the ability to form a stable complex with biomolecules, making it able to be developed as a biosensor. The discussion in this review paper focuses on the characteristics of calixarene thin films made using the LB method that are suitable for nanosensor applications.  ..

406 hits

A solar dryer hybrid photovoltaic thermal (PV/T) system has been designed, built and its performance has been studied. This research aims to develop a stand-alone solar dyer system, portable and less maintenance. This system consists of three main parts; PV/T system with configuration-Z thermal absorber plate, multi-direction solar collector with cross absorber plate and drying chamber. The designed system is named multi-direction solar collector as the solar radiates through upper and around the sides. This situation may increase the amount of heat that will absorb by the absorber plate. Six sets of cross absorber plates were used in the multi-direction solar collector and they were assembled row by row. PV/T airflow uses configuration-Z absorber plate which is placed under the photovoltaic (PV) module. The amount of heat produced from the PV/T configuration-Z is used as the pre-heat before the hot air flows to the multi-direction solar collector, while electric energy from PV is used.....

48 hits