Chandigarh University

About: Chandigarh University is a education organization based out in Mohali, India. It is known for research contribution in the topics: Computer science & Chemistry. The organization has 1358 authors who have published 2104 publications receiving 10050 citations.

Design of slit loaded rectangular microstrip patch antenna

Abstract: This paper presents the design of rectangular slit loaded microstrip patch antenna (S-RMPA) operating at resonant frequency 2.4Ghz, .i.e. ISM Band (industrial scientific and medical), hence this antenna can be used for telemedicine purpose and such antennas are used as textile antennas because of their compact size. The development and utilization of textile antennas has grown rapidly for various applications. The main advantage of textile antennas is that they are designed as clothing elements that are able to transmit or receive wireless signals. RMPAs are well known for high efficiency, low profile, small size, good compatibility, easy to design and fabricate etc. The simulated results of characteristics modes of RMPA are presented in this study. Microstrip line feed is used for impedance matching as it is easy to fabricate, simple to match by controlling the inset position and are simple to model.

Optimized Route Selection on the Basis of Discontinuity and Energy Consumption in Delay-Tolerant Networks

Abstract: Delay-Tolerant Networks (DTNs) are intermittently connected mobile wireless networks in which the connectivity between nodes changes frequently due to nodes movement A delay-tolerant network suffers from nodes energy efficiency issues due to frequent mobility and reliable transmission of data packet from source to destination Due to the mobility of the node there are frequent changes in the path Due to which enormous amount of energy is wasted So to conserve the energy of the node energy efficient transmission from one node to another node can be achieved by using the proposed algorithm EADBNHS Connectivity of the network can be determined by Synchronism, Simultaneousness and Discontinuity using EADBNHS EADBNHS is the algorithm devised for energy efficiency in this article To achieve energy efficiency of a node the algorithm is designed in a way, which includes transmission energy, reception energy and the health of the node This algorithm supports energy efficient transfer of data packet; it selects a node on the basis of minimum energy available on the node and on the basis of its connectivity to other nodes With the help of Synchronicity, Simultaneousness and Discontinuity we can easily judge a node’s condition to become the participant node in the path from source to destination

A squared bossed diaphragm piezoresistive pressure sensor based on CNTs for low pressure range with enhanced sensitivity

Abstract: This paper presents Micro-Electro-Mechanical System (MEMS) diaphragm based piezoresistive pressure sensor for biomedical applications. A piezoresistive pressure sensor with a squared bossed diaphragm structure was developed for a low-pressure range. A trade-off between the deformation of the diaphragm and the stress induced in the piezo resistors on the diaphragm edge is analysis by using Carbon nanotubes (CNTs). CNTs are introduced in the sensor being a sensitivity material, responsible for wide range of pressure and sensitivity. The simulated results showed that the proposed structure was able to measure low pressure within range of 0–5 kPa with improved sensitivity and linearity. An 800-µm-wide 10-µm-thick square-diaphragm pressure sensor has also been designed and investigated for the different mender shape. It has been observed from the results that maximum sensitivity of 27.82 mV/kPa is achieved for 2-turn piezo resistor and the best non-linearity error − 0.27% FSS is achieved for 1-turn piezo resistor.

Impact of copper substitution on the structural, ferroelectric and magnetic properties of tungsten bronze ceramics

Abstract: The copper substituted tungsten bronze ceramics with generic formula Ba5CaCuXTi2−xNb8O30(x = 0.0, 0.02, 0.04, 0.06 and 0.08) were successfully synthesized for the first time by solid state reaction method. X-ray diffraction (XRD), Scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDAX) were utilized to examine the different structural parameters and elemental compositions. XRD study depicted the single phase tetragonal structure having space group P4bm. The crystallite size was observed to be in the range 14.4–30.23 nm. The coexistent of ferroelectricity and magnetism was established by P-E and M-H measurements. The P-E loop study indicated an increase in the coercive field (11.805–23.736 kVcm−1) while the M-H study depicted adecrease in the magnetization (7.65 × 10−4–5.32 × 10−4 emu/g) with the incorporation of Cu2+ ions. Raman spectrum depicted that there is shift in the position of Raman modes with the substitution of copper which revealed one-mode behavior in the synthesized ceramics.