Improving Detection Sensitivity for Nanoscale Targets Through Combined Photonic and Plasmonic Techniques
G. Zhang, Y. Zhao
Clemson University, Clemson, SC, USA
Photonic technique such as the whispering gallery mode (WGM) is often used for detection of small particles like bacteria and viruses. It offers good detection sensitivity and is advantageous over other detection techniques because the detection can be label free. However, the detection sensitivity may not be sufficient when the size of the detection target is in nanoscale. To change this, we use ...
Empirical Model Dedicated to the Sensitivity Study of Acoustic Hydrogen Gas Sensors Using COMSOL Multiphysics®
A. Ndieguene, I. Kerroum, F. Domingue, A. Reinhardt
Laboratoire des Microsystèmes et de Télécommunications/Université du Québec à Trois-Rivières, Trois-Rivières, QC, Canada
Laboratoire d’Électronique et des Technologies de l’Information, CEA, LETI Grenoble, France
Due to the increasing demand for hydrogen gas sensors for applications such as automation , transportation, or environmental monitoring, the need for sensitive and reliable sensors with a short response time is increasing [1-2]. The purpose of such gas sensors is to analyze the ambient atmosphere to detect any hydrogen accumulation or leaks in hydrogen reservoirs, for the purpose of insuring ...
J. C. Kumaradas, A. Zhang, Y. D. Davletshin
Ryerson University, Toronto, ON, Canada
University of Waterloo, Waterloo, ON, Canada
Tremendous progress is being made in the integration of nanoparticles into micro-analytical systems for biosensing. These materials are shown to enhance the analyte capture capability of biosensing platforms by offering higher surface area to volume ratio and more efficient interaction with biomolecules of the same size . Furthermore, in the context of clinical diagnostics, low detection limit ...
R. V. Arimilli, A. H. Nejad, K. Ekici
The University of Tennessee, Knoxville, TN, USA
A new simple air-cooled inverter design is numerically investigated using COMSOL Multiphysics® software. The thermal-fluid analysis is based on a three-dimensional conjugate heat transfer model in which the flow field is assumed to be laminar. A rigorous mesh convergence was performed to ensure that the overall energy balance error is within engineering accuracy while the computational cost is ...
B. D. Hauer, C. Doolin, K. S. D. Beach, J. P. Davis
University of Alberta, Edmonton, AB, Canada
Over the past few decades, nano/micro-mechanical resonators have experienced tremendous improvements in measurement sensitivity, achieving sub-attometer displacement transduction , yoctogram mass resolution , and force measurements on the order of attonewtons . In order to ensure this level of accuracy, it is crucial that each nano/micro-mechanical device is properly calibrated. As ...
Inverse Model for Solving Partial Differential Equations Using a Stochastic Method and COMSOL Multiphysics®
E. Khosrowshahli, A. Jeremic
McMaster University, Hamilton, ON, Canada
Partial differential equations (PDEs) govern many phenomena in nature. Solving optimization problems which comprises the solution of large number of PDEs, is expensive concerning time and memory. Therefore, to reduce the solution cost, original problem is transformed to a corresponding stochastic optimization problem, which can be solved using optimization algorithms for stochastic problems. ...
C. Romero, M. Mujeeb-U-Rahman
California Institute of Technology, Pasadena, CA, USA
Implantable biosensors have the potential to revolutionize the healthcare industry by allowing patients and their health care providers to continuously monitor blood pH levels, pCO2, proteins, metabolites, and a wide variety of other biomolecules. These devices need to operate completely wirelessly to be used for long term monitoring. Metal coils are attractive candidates for wireless power ...
J. Brcka, S. Gandhi, R. Joe
TEL U.S. Holdings, Inc., U.S. Technology Development Center, Austin, TX, USA
The plasma reactor with radial line slot antenna (RLSATM), a planar microwave (2.45 GHz) plasma source, is used in etch and deposition technology, typically in reactive rich gaseous environment, and for processes that are sensitive to plasma damage. Besides a strict uniformity control, the plasma chemistry is becoming one of the key challenges in current technology. These two aspects are ...
K. A. Bodnyk, G. J. Noble, N. Fitzpatrick, M. J. Allen, K. Stephenoff, R. T. Hart
Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
Fitzpatrick Referrals, Godalming, Surrey, United Kingdom
Department of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
Introduction: The elbow joint in dogs constitutes a complex interaction of three bones, the humerus, radius and ulna. The primary articulation involves flexion of the forearm where the elbow acts as a hinge joint, with the humeral condyle seated in an arc formed by the ulnar trochlear notch and the radial head. A secondary articulation comes from rotation of the forearm when it acts as a pivot. ...
Studying the Sensitivity of the Wrinkling Process to Mesh Imperfections Using COMSOL Multiphysics® and LiveLink™ for MATLAB®
S. K. Saha, M. L. Culpepper
Massachusetts Institute of Technology, Cambridge, MA, USA
Introduction: Wrinkles are formed on a thin film as a result of buckling-based instabilities and the mechanism is similar to Euler buckling of beams under compressive loads (Figure 1). Wrinkling of thin films can be used as an inexpensive fabrication technique for generating micro and nano scale periodic patterns. In the absence of analytical models, finite element techniques are used for ...