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Design of a virtual laboratory for analyzing nanoscale magnetic materials

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Information about Design of a virtual laboratory for analyzing nanoscale magnetic materials
Technology

Published on March 12, 2014

Author: ijma

Source: slideshare.net

Description

As the advance of technology, the manufacturing process of materials has moved forward from the scale of
micrometer to sub-micrometer and nanometer. Combining nanotechnology and traditional magnetic
materials, nanoscale magnetic materials can be created for applications in biomedical examination and
therapy as well as data recording to increase the storage space of a computer. The topic of using the
magnetic force microscope (MFM) to exam a material’s magnetic field distribution can often be found in
nanotechnology courses. Due to the cost of equipment and difficulty of its operation, the teacher can only
teach students with an instructional video most of the time instead of using a real MFM to conduct
experiments. As a result, students may not fully understand its principle and operating procedure. In this
study, a virtual MFM laboratory was designed as an app for execution on tablet computers to increase
students’ learning interest and motivation. Without using expensive equipment, they can understand the
magnetic field distribution of materials by using the virtual MFM to examine different samples provided in
the virtual laboratory. A teaching experiment was also conducted to compare the learning effectiveness of
using an instructional video and the virtual MFM laboratory. The experimental results showed that using
the virtual MFM laboratory was more effective than using the instructional video; the questionnaire results
also revealed that most students had positive attitudes toward the virtual MFM laboratory and they thought
it could enhance their learning interest and motivation.
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