Nehal Ali Erfan Abdelwahab has completed her Master’s degree in Chemical engineering department at Minia university, Egypt. She spent two years working for her PhD in the National research center in Cairo and now she is completing her PhD study in Biomedical engineering department at East Carolina University, Greenville, USA.
In the present study soft ferrimagnetic glass ceramic nanoparticles (MNPs) were prepared by high energy mechanical ball milling utilizing a planetary ball mill. Various MNPs samples were produced by changing the milling time from 1h to 5h, in the constant milling speed of 1200 rpm. Scanning electron microscopy (SEM) linked with energy dispersive X-ray (EDX) and transmission electron microscopy (TEM) were performed to explain the characteristics of primary (unmilled) and milled samples and to confirm the presence of the nanoparticles. Using high energy planetary ball milling technique we succeeded to obtain uniform spherical shaped nanoparticles with 10 nm particle size and a very narrow particle size distribution.
Luke Harmon is a student at Ohio Northern University, currently a senior pursuing a Bachelor’s of Science in Mechanical Engineering with an Applied Mathematics minor. Ohio Northern is a top ranked accredited college, ranking 2nd in the 2016 edition of Best Colleges in the Midwest Region. This senior capstone project is focused on the research of the shape memory alloys and how it can be used for practical purposes.
The human hand is a very complex and crucial structure of everyday life and any minor alteration can easily result in serious functionality problems. Any patient who is relearning the functionality of his or her hand after damage, whether it be some kind of surgery or neurological problem, often needs assistance. Modern hand therapy strategies exist, and are utilized to treat different hand injuries. Some treatments are based around simple movements such as stretching, while others utilize a mechanism to guide and resist the fingers through different movement patterns. However, none of the existing treatment options actually exert a controlled force on the fingers to move them, and none utilize shape memory alloys to carry out their functions. The presentation will discuss the design of a lightweight glove which utilizes the ability of a shape memory alloy, Nitinol, to help patients’ hands move through various therapy patterns. The forces of the Nitinol wires closely resemble the forces needed by those going through the therapy process. The thermal activation can be done via electric current and the movements can be controlled with micro controlling program software. Once the patient starts to develop more functionality and strength over time, the glove can also be used as a resistance device to further develop muscle strength.