Design and analysis of MEMS based piezoelectric micro pump integrated with micro needle
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TECHNICAL PAPER
Design and analysis of MEMS based piezoelectric micro pump integrated with micro needle K. Srinivasa Rao1 • J. Sateesh2 • Koushik Guha2 • K. L. Baishnab2 • P. Ashok1 • K. Girija Sravani1,2 Received: 2 August 2017 / Accepted: 9 February 2018 Ó Springer-Verlag GmbH Germany, part of Springer Nature 2018
Abstract This paper presents the design and simulation of piezoelectric micro pump integrated with micro needle. The proposed micro pump adopted rectangular piezoelectric vibrator supplied with an external alternating current voltage. It has four primary components: electrodes, piezoelectric plate, PDMS (polydimethylsiloxane) membrane and channel with inlet and outlet bottom up and whole setup is constructed on a glass base. The simulations are carried out by subjecting the developed model to voltage changes, material changes which shows the satisfactory results. The micro pump possesses a flow rate of 4.1 ml/min at an input voltage 10 V with frequency 300 Hz while it is integrated with Micro Needle is having 4.67 ml/min. High pumping rates at low applied voltages making the proposed model significantly important for Transdermal controlled drug delivery applications.
1 Introduction Microelectromechanical systems (MEMS) is a technology where discrete physical concepts brought together to get a meaningful operation of device. Microfluidics is the most remarkable challenges in the accurate control and manipulation of liquids in the micro meter regime. A large number of microfluidic devices are intensively used in the fields of chemical analysis, lab on chip, controlled Drug Delivery and life sciences (Judy 2000; Sateesh et al. 2017). Transporting drug effectively to patient body is a significant challenge in medical treatment. Traditional oral drug delivery pills are not always appropriate as all the drugs can not survive for the harsh environment in the gastrointestinal liquids (Lo et al. 2008; Song et al. 2013, 2014). Proteins and some sensitive drugs will be administered by hypodermic needles, to avoid the gastrointestinal attack. The drug delivery systems are a combination of both micro needle and micro pump. There is
& K. Srinivasa Rao [email protected] 1
MEMS Research Center, Department of Electronics & Communication Engineering, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, Guntur, Andhra Pradesh 522502, India
2
National MEMS Design Center, Department of Electronics & Communication Engineering, National Institute of Technology, Silchar, Assam 788010, India
very less reported research on integration of micro needle with micro pump and its optimised structure. This paper mainly concentrates on simulation study of integrated micro pump with micro needle. The utmost primary component in micro fluid-propelling systems is micro pump. Micro pumps can be classified depending on mode of operation as mechanical and non-mechanical (Chang et al. 2007). Mechanical micro pumps can be further divided into reciprocating and peristalt
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