We describe the fabrication of ionic polymer-meal composites (IPMCs) containing Cu/Ni electrode as an electrode
material and ionic liquid as an electrolyte. Cu/Ni is notorious for vulnerability to oxidation and acid. The authors have
investigated best candidate of ionic liquids for this vulnerable electrode. This new IPMC shows increased displacement
and blocking force compared to that of conventional IPMC containing Pt electrode and ionic liquid due to increased
stiffness of resulting IPMC and size effect of mobile cations. In this research, the effect of ionic liquid was investigated
by monitoring displacement and blocking force of IPMCs depending on the type of ionic liquids.
Ionic polymer-metal composite (IPMC) is an attractive actuator among many electro-active polymers. In order to
improve the performance of IPMC actuator, an IPMC actuator with the patterned surface was proposed. It is named the
patterned IPMC actuator. In order to make use of its maximum effect, it is needed to establish a valid mathematical
model. Among many models of IPMC actuator, the grey box modeling proposed by Kanno et al. was suited to model the
patterned IPMC actuator. In this paper, we applied the grey box model based on Kanno's model. Theoretical and
experimental results demonstrate that the model is practical and effective enough in predicting the bending displacement
Ionic Polymer-Metal Composites (IPMCs) of EAP actuators is famous for its good property of response and durability.
The performance of Ionic Polymer-Metal Composites (IPMCs) is an important issue which is affected by many factors.
There are two factors for deciding the performance of IPMC. By treating anisotropic plasma etching process to 6 models
of the IPMCs, enhanced experimental displacement and force results are obtained. Plasma patterning processes are
executed by changing the groove and the land length of 6 patterns. The purpose of the present investigation is to find out
the major factor which mainly affects the IPMC performance. Simulations using ANSYS have been executed to compare
with the experimental results about the values and the tendency of data. Experimental and simulating data of the
performances seem to have similar tendency. In the next part of the paper, we observed the other properties like
capacitance, resistance and stiffness of 6 plasma patterned IPMCs. And we observed that the stiffness is the major factor
which affects the performance of IPMCs. As we seen, our problem has been reduced to investigate about the property of
stiffness. We suggest that the stiffness is largely changed mainly because of the different thickness of Platinum stacked
of the groove and the land part which are produced by anisotropic plasma etching processes. And we understand that
anisotropic plasma patterned IPMCs of better performance can be applied to various applications.
IPMC-EMIM (Ionic Polyer Metal Composites + 1-ethyl-3- methyl imidazolium trifluromethane sulfonate, EMIM-Tfo)
is fabricated by substituting ionic liquid for water in Nafion film, which improves water sensitiveness of IPMC
and guarantees uniform performance regardless of the surrounding environment. In this paper, we will briefly
introduce the procedure of fabrication of IPMC-EMIM and proceed to introduce the Hook-type actuator using IPMC-EMIM
and application to AF Lens actuator. Parameters of Hook-type actuator are estimated from experimental data.
In the simulation, The proposed AF Lens Actuator is assumed to be a linear system and based on estimated parameters,
PID controller will be designed and controlled motion of AF Lens actuator will be shown through simulation.
The IPMC-EMIM actuator is an improved IPMC actuator to replace the water by stable ionic liquids (1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([EtMeIM][TA])). Just as a general IPMC actuator which uses the
solvent of water has hysteresis, so do the IPMC-EMIM actuator exhibits hysteresis like other smart materials such as
piezoceramics (PZT), magnetostrictive materials, and shape memory alloys (SMA). Hysteresis can cause it to be
unstable in closed loop control. The Preisach Model has been used to model the hysteretic response arising in PZT and
SMA. Noting the similarity between IPMC-EMIM and other smart materials, we apply the Preisach model for the
hysteresis in the IPMC-EMIN actuator. This paper reviews the basic properties of the Preisach model and confirms
that the Preisach model of IPMC-EMIM actuator is possible.
Step-motor, piezo, liquid lens and voice coil motor (VCM) have been thought as good candidates for actuators in auto-focusing
compact camera module (CCM). Currently, VCMs take possession of big place in auto-focusing CCM market.
However, VCMs have limitations in developing thin, low-power CCMs. Therefore, ionic polymer-metal composites
(IPMCs) could be thought as one of the best candidates in developing auto-focusing CCM due to their well-known
characteristics such as low-power consumption and large displacement. It is required that fast bending response (20
μm/20 ms) and large blocking force (800 mgf) should be achieved for the practical applications of IPMCs in developing
auto-focusing CCM. Here, we present the method for increasing IPMC's bending response and displacement by
anisotropic plasma treatment. Furthermore, we demonstrate the fabrication of a prototype of CCM actuated by IPMC
and its remarkable low power consumption.