In the marine environment the waves generated by the flow of the wind or by natural phenomena such as earthquakes inside the oceans need to be monitored and known before it takes effect. The sea waves are a complex phenomenon and their behavior is quite difficult to predict. The first step is to take accurate and low cost measurements of the sea surface oscillations. In this paper we model and analyze MEMS capacitive accelerometers using Comsol Multiphysics simulation software for monitoring low amplitude sea waves.
In this paper we aim to analyze the possibility of detecting nuclear radiation with a microdetector MEMS based. A part of our work is related to modeling the response of some materials like silicon to the interaction with nuclear radiation in particular with alpha radiation. Changing of mechanical, thermal, electrical properties of materials can be used for the development of small and little expensive detectors. As a second aspect we investigate the measurable effects of nuclear radiation on electronic devices in particular to a PIN diode.
The GEANT4 package programs were used to calculate the contribution of external γ dose due to natural
radioactivity of soils. The method correlates the activity concentrations of 40K and members of the 238U and 232Th
radioactive decay chains in soil with the γ dose absorbed by a water phantom. The obtained results are in agreement
with values measured and calculated by other authors.
The GEANT4 package programs were used to calculate the contribution of external γ dose due to natural
radioactivity of building materials. The method correlates the activity concentrations of 40K and members of the 238U and
232Th radioactive decay chains in building materials used for constructing the walls with the γ dose absorbed by a water
phantom at the center of the room. The obtained results are in agreement with values measured and calculated by other
authors.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.