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Aim and Objectives: The aim of the study is to compare remaining dentine thickness at 3mm and 7mm... more Aim and Objectives: The aim of the study is to compare remaining dentine thickness at 3mm and 7mm from radiographic root apex before & after instrumentation with ProTaper, iRace and Heroshaper rotary files by Cone Beam Computerised Tomography. Materials and Methods: For evaluation, 30 single rooted premolar teeth with less than 20% curvature were selected. Of these, 10 teeth were distributed for each group, where Group 1 included ProTaper rotary files ; Group 2 included iRace rotary files and Group 3 included Heroshaper rotary files . Pre instrumentation and post instrumentation three-dimensional CT images with measurements were obtained from 3mm and 7mm radiographic root apex by cone beam computerized tomography and stored in the computer harddisk. Result: It was observed that there was a significant difference at 7mm (P 0.05) . ProTaper has removed more amount of dentin at 7mm when compared with iRace and Heroshaper rotary files and at 3mm almost all the three file systems removed...
2011 International Semiconductor Device Research Symposium, Dec 1, 2011
IEEE Transactions on Electron Devices, 2012
In this paper, an analytical model for a p-n-p-n tunnel field-effect transistor (TFET) working as... more In this paper, an analytical model for a p-n-p-n tunnel field-effect transistor (TFET) working as a biosensor for label-free biomolecule detection purposes is developed and verified with device simulation results. The model provides a generalized solution for the device electrostatics and electrical characteristics of the p-n-p-n-TFET-based sensor and also incorporates the two important properties possessed by a biomolecule, i.e., its dielectric constant and charge. Furthermore, the sensitivity of the TFET-based biosensor has been compared with that of a conventional FET-based counterpart in terms of threshold voltage (V th) shift, variation in the ON-current (I on) level, and I on /I off ratio. It has been shown that the TFET-based sensor shows a large deviation in the current level, and thus, change in I on can also be considered as a suitable sensing parameter. Moreover, the impacts of device parameters (channel thickness and cavity length), process variability, and process-induced damage on the sensitivity of the biosensor have also been discussed.
Aim and Objectives: The aim of the study is to compare remaining dentine thickness at 3mm and 7mm... more Aim and Objectives: The aim of the study is to compare remaining dentine thickness at 3mm and 7mm from radiographic root apex before & after instrumentation with ProTaper, iRace and Heroshaper rotary files by Cone Beam Computerised Tomography. Materials and Methods: For evaluation, 30 single rooted premolar teeth with less than 20% curvature were selected. Of these, 10 teeth were distributed for each group, where Group 1 included ProTaper rotary files ; Group 2 included iRace rotary files and Group 3 included Heroshaper rotary files . Pre instrumentation and post instrumentation three-dimensional CT images with measurements were obtained from 3mm and 7mm radiographic root apex by cone beam computerized tomography and stored in the computer harddisk. Result: It was observed that there was a significant difference at 7mm (P 0.05) . ProTaper has removed more amount of dentin at 7mm when compared with iRace and Heroshaper rotary files and at 3mm almost all the three file systems removed...
2011 International Semiconductor Device Research Symposium, Dec 1, 2011
IEEE Transactions on Electron Devices, 2012
In this paper, an analytical model for a p-n-p-n tunnel field-effect transistor (TFET) working as... more In this paper, an analytical model for a p-n-p-n tunnel field-effect transistor (TFET) working as a biosensor for label-free biomolecule detection purposes is developed and verified with device simulation results. The model provides a generalized solution for the device electrostatics and electrical characteristics of the p-n-p-n-TFET-based sensor and also incorporates the two important properties possessed by a biomolecule, i.e., its dielectric constant and charge. Furthermore, the sensitivity of the TFET-based biosensor has been compared with that of a conventional FET-based counterpart in terms of threshold voltage (V th) shift, variation in the ON-current (I on) level, and I on /I off ratio. It has been shown that the TFET-based sensor shows a large deviation in the current level, and thus, change in I on can also be considered as a suitable sensing parameter. Moreover, the impacts of device parameters (channel thickness and cavity length), process variability, and process-induced damage on the sensitivity of the biosensor have also been discussed.