Model-based approach to validate the aluminium nitride material based ultrasonic MEMS transceiver for temperature sensing

Micro & nano letters

article

Hara Prasada Tripathy¹  Priyabrata Pattanaik¹  Dilip Kumar Mishra¹  Sushanta Kumar Kamilla¹  Rajesh Kumar Tripathy² 

[1] Semiconductor Research Laboratory, Faculty of Engineering and Technology (ITER), Siksha ‘O’ Anusandhan (Deemed to be University);Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science (BITS), Hyderabad Campus

关键词: temperature sensors;    support vector machines;    least squares approximations;    regression analysis;    ultrasonic transducers;    piezoelectric materials;    aluminium compounds;    III-V semiconductors;    wide band gap semiconductors;    microsensors;    temperature measurement;    piezoelectric transducers;    computerised instrumentation;    voltage measurement;    aluminium nitride piezoelectric material;    ultrasonic MEMS transceiver based temperature sensor;    model-based approach;    COMSOL Multiphysics simulations;    least square support vector machine based regression model;    LSSVM based regression model;    normalised correlation coefficient;    transmitter section parameters;    receiver sections parameters;    AlN;   

DOI  :  10.1049/mnl.2018.5266

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Acontaminated ophthalmic solutions represent a potential cause of avoidable ocular infection. This study aimed to determine the magnitude and pattern of microbial contamination of eye drops in out patient at the department of ophthalmology, at Baghdad national hospital, Iraq. Fifty four vials from the out patient clinic were obtained for microbial examination after an average use of 2 weeks. The dropper tip and the residual eye drop were examined for contamination. The specimens were cultured, the number of colonies counted, the organisms identified. Eight (15%)  out of 54 analyzed vials were contaminated , most bacteria identified belonged to the normal commensal flora of the eye. Isolated contaminants were Staphylococcus auereus, Micrococcus , Neisseria catarrhalis, Gram negative Rods, Candida albicans, and Staph epidermidus.The dropper tip was more often contaminated (n=5) than the residual solution (n=2) and only one vial showed acontamination of both the drop and the tip (n=1) . Our data show acontamination rate of 15%, which is in the medium range of data puplished on the contamination of eye drops elsewhere (0.07% to 35.8%).

【 授权许可】

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