Ashwani Kumar Dubey ¹, Ayush Sharma ², Priyanka Mehta ³

Affiliations
1 Department of Electronics and Communication Engineering, Amity School of Engineering, Amity University Uttar Pradesh, Noida – 201313, Uttar Pradesh, IN
2 Department of Electronics and Communication Engineering, Amity School of Engineering, Amity University, Noida – 201313, Uttar Pradesh, IN
3 Amity Institute of Information Technology, Amity University, Noida – 201301, Uttar Pradesh, IN

Abstract

This paper presents a critique of the work done in field of network security with a focus on attacks which are further classified into active and passive and how to safeguard information. Active attacks are classified into masquerade, fabrication and modification of message which is further categorized into replay attacks and alterations. Passive attack includes release of message content and traffic analysis. For securing our network, analysis of various network security techniques which include Virtual Private Network (VPN) technology, antivirus, firewalls, intrusion prevention systems and spyware protection is discussed by taking up relevant case studies. Detailed analysis of biometric security is concluded on the basis of following factors such as: biometric accuracy, its verification capabilities and their interaction with users. Security of network as well as end point users can be increased manifolds by implementing biometrics to our present networks. Biometrics acts as an extra shield in safeguarding our confidential information by implementing 2-step verification. Biometrics are classified into active and passive biometric and these systems include fingerprint, iris scanning, face detection and voice analysis.

Keywords

Biometric, Fingerprint, Firewall, Information Security, Iris Scanning, Virtual Private Network

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Rashmi Sharma ¹, Rekha Agarwal ¹, Ashwani Kumar Dubey ², Anil Arora ³

Affiliations
1 Department of Electronics and Commuication, Amity School of Engineering & Technology Bijwasan – 110061, New Delhi, IN
2 Department of Electronics and Communication, Amity University, Noida – 201303, Uttar Pradesh, IN
3 Department of Electronics and Communication, Thapar University, Patiala – 147004, Punjab, IN

Abstract

The objective of the paper is to design a Microelectronic Mechanical Systems(MEMS) based Capacitive Micromachined Ultrasonic Transducer (CMUT) which has been found to be superior in terms of bandwidth, transduction efficiency and array fabrication as compared to conventional piezoelectric transducers. With the years CMUT has been shown with different element geometries and fabrication techniques, however the optimization techniques and the application areas for the device persist. In this paper CMUT is simulated in COMSOL with Square and Circular diaphragm. FEM analysis is being carried out considering the same area for both the geometries in 3D.CMUT dynamics have been modeled by combining the Electrostatic module, Solid Mechanics Module and Mesh modules in COMSOL. The distributed stress and electric field are measured as function of time. This gives the exact comparison for the Eigen frequency, pull in voltage, deflection with applied DC bias and deflection of the diaphragm with AC superimposed on DC considering the isotropic Silicon as the diaphragm material. This simulation work provides results for the researcher to conclude on the geometry of the device prior to fabrication.

Keywords

Circular, Deflection, Diaphragm, Eigen Frequency, FEM Analysis, Square, Ultrasonic Transducer

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