Enikov, E. T., Edes, G., & Anton, R. (2017). THERMAL DRIFT AND DYNAMIC RESPONSE OF MICRO FLOW SENSORS FOR SMART VP SHUNTS. PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2016, VOL. 3.
Deng, K., Enikov, E. T., & Polyzoev, V. D. (2009). Development of a shape conveying interface based on tactile feedback. 2009 ICME International Conference on Complex Medical Engineering, CME 2009.
Abstract:
A shape conveying interface based on tactile feedback is developed in this paper. To deliver the reference shape, the electromagnetic (EM) position sensors and wearable permanent magnet based EM actuator are used to provide the estimated 3D image by the user's scanning. Principle and experimental results of EM position measurement are provided. ANSYS simulation is used to design a proper dimension of solenoid to drive the permanent magnet actuator. With the designed actuator, the 63.57 mN actuation force at peak current is estimated from measured force-current curve. 50-Hz operation which has been shown to be optimal working frequency is used to produce vibratory stimulation to user's finger. The shape perception experiments performed by 2 volunteers showed that majority of shapes are able to be delivered. More cues may be incorporated in order to improve successful rate of the shape delivery. ©2009 IEEE.
Enikov, E. T., & Seo, G. S. (2005). Experimental analysis of current and deformation of ion-exchange polymer metal composite actuators. Experimental Mechanics, 45(4), 383-391.
Abstract:
In this paper we describe the experimental analysis of a novel ion-exchange polymer metal composite (IPMC) actuator under large external voltage. The experimental analysis is supplemented with a coupled thermodynamic model, which includes mass transport across the thickness of the polymer actuator, chemical reactions at boundaries, and deformation as a function of the solvent (water) distribution. In this paper, the case of large electrode potentials (over 1.2 V) has been analyzed experimentally and theoretically. At these voltage levels, electrochemical reactions take place at both electrodes. These are used in the framework of overpotential theory to develop boundary conditions for the water transport in the bulk of polymer. The model is then simplified to a three-component system comprised of a fixed negatively charged polymeric matrix, protons, and free water molecules within the polymer matrix. Among these species, water molecules are considered to be the dominant species responsible for the deformation of the IPMC actuators. Experiments conducted at different initial water contents are described and discussed in the context of the proposed deformation mechanism. Comparison of numerical simulations with experimental data shows good agreemenent. © 2005 Society for Experimental Mechanics.
McCafferty, S., Levine, J., Schwiegerling, J., & Enikov, E. T. (2018). Goldmann and error correcting tonometry prisms compared to intracameral pressure. BMC OPHTHALMOLOGY, 18.
Enikov, E. T., & Lazarov, K. V. (2005). Micro-mechanical switch array for meso-scale actuation. Sensors and Actuators, A: Physical, 121(1), 282-293.
Abstract:
Traditional micro-electro mechanical systems (MEMS) actuators have limited stroke and force characteristics. This paper describes the development of a hybrid actuation solution, which utilizes a micro-machined actuator array to provide switching of the mechanical motion of a larger meso-scale piezo-electric actuator. One motivating application of this technology is the development of a tactile display, where discrete mechanical actuators apply vibratory excitation at discrete locations on the skin. Specifically, this paper describes the development, fabrication, and characterization of a 4 × 5 micro-actuator array of individual vibrating pixels for fingertip tactile communication. The individual pixels are turned on and off by pairs of microscopic thermal actuators, while the main vibration is generated by a vibrating piezo-electric plate. The fabrication sequence and actuation performance of the array are also presented. © 2005 Elsevier B.V. All rights reserved.
