Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Engineering
A Robotic Gripper Based On Conducting Polymer Actuators, Gursel Alici, Nam N. Huynh
A Robotic Gripper Based On Conducting Polymer Actuators, Gursel Alici, Nam N. Huynh
Faculty of Engineering - Papers (Archive)
Conducting polymer actuators or as widely known as artificial muscles have many promising features such as being biocompatible and suitable to open loop control, and having high force to weight ratio. If properly engineered, they can be employed as actuators plus joints like active flexure joints articulating monolithic structures. Such structures or systems not containing any sliding and/or rolling components potentially have high positioning accuracy, which is crucial for micro/nano manipulation applications. In this paper, we employ a bending type polymer actuator to articulate two separate rigid links made up of carbon fibre such that a two-finger gripper is formed. …
Extraction And Transport Of Metal Ions And Small Organic Com#163s Using Polymer Inclusion Membranes (Pims), Long Nghiem, Patrick Mornane, Ian Potter, Jilska Perera, Robert Cattral, Spas Kolev
Extraction And Transport Of Metal Ions And Small Organic Com#163s Using Polymer Inclusion Membranes (Pims), Long Nghiem, Patrick Mornane, Ian Potter, Jilska Perera, Robert Cattral, Spas Kolev
Faculty of Engineering - Papers (Archive)
The stability of polymer inclusion membranes (PIMs) relative to other liquid membranes is amongst the major reasons for the recent rejuvenation of interest in carrier-mediated transport for selective separation and recovery of metal ions as well as numerous organic solutes. This is reflected by an increasing number of PIM investigations reported in the literature over the last two decades. Given the outstanding performance of PIMs compared to other types of liquid membranes particularly in terms of membrane lifetime, it has been predicted that practical industrial applications of PIMs will be realized in the near future. This review provides a comprehensive …
Towards Improving Positioning Accuracy Of Conducting Polymer Actuators, Gursel Alici, Nam N. Huynh
Towards Improving Positioning Accuracy Of Conducting Polymer Actuators, Gursel Alici, Nam N. Huynh
Faculty of Engineering - Papers (Archive)
Recently, there have been significant developments in conducting polymers, particularly in their synthesis and use as electromechanical actuators. This is mainly due to their many promising features including biocompatibility, high force to weight ratio, suitability to open loop control. On the other hand, they suffer from nonlinear problems such as hysteresis and creep. With this in mind, it is the aim of this study to evaluate the existence level of these nonlinearities and their mathematical modeling in order to improve the positioning accuracy of conducting polymer actuators. The polymer actuator considered in this study which has a symmetrical structure can …
Size-Dependent Elastic Modulus Of Single Electroactive Polymer Nanofibers, Min-Kyoon Shin, Sun I. Kim, Seon Jeong Kim, Sung-Kyoung Kim, Haiwon Lee, Geoffrey M. Spinks
Size-Dependent Elastic Modulus Of Single Electroactive Polymer Nanofibers, Min-Kyoon Shin, Sun I. Kim, Seon Jeong Kim, Sung-Kyoung Kim, Haiwon Lee, Geoffrey M. Spinks
Faculty of Engineering - Papers (Archive)
The authors report for the first time the size dependency of the elastic modulus of well-aligned single polymeric nanofibers. The nanofibers were fabricated from electroactive polymers (EAPs) and had an ellipsoidal cross section because of impingement between a solid surface and a polymer jet during electrospinning. Although the EAPs had very weak mechanical properties in the bulk, the elastic modulus of single EAP nanofibers increased exponentially as the diameter of the EAP nanofibers decreased to diameters of a few tens of nanometers. The elastic modulus of single nanofibers was measured using three-point bending tests employing an atomic force microscope.