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Single sub-micron structures testing platform for chemiresistive gas sensors: Microfabrication process design and assembly by lift method
(2020-03-04)
Devices built at the micro and nanoscales, with high-throughput capability utilizing microfabrication methods, are traditionally achieved by photolithography. In the past decade Metal oxide Semiconductors (MOS) research ...
Damage detection and identification in sandwich composites using neural networks
(2005)
Marine, aerospace, ground and civil structures can receive unexpected loading that may compromise integrity during their life span. Therefore, improvement in detecting damage can save revenue and lives depending upon the ...
Detection of climate changes over the global and Caribbean basin
(2007)
The statistical test developed in this research was able to find punctual changes at any time series. In this way the studied variables including sunspot, global carbon dioxide, air surface temperature, cloud cover and sea ...
Numerical study of transport processes in the gas diffusion media of a fuel cell
(2009-12)
Fuel cells, widely regarded as the 21st century energy-conversion devices, convert chemical energy directly into electricity with high energy density at low operating temperature, good performance operation, and high ...
Surface response analysis of electrospun nanofiber beads
(2007)
The research presented in this document is focused on using the surface response method to analyze the nanofiber beads Polyethylene Oxide (PEO) synthesized by electrospinning. The process was characterized in detail by ...
Development of a variable diameter wheel for motion transmission
(2009-05)
In this work a variable diameter wheel (VDW) is presented. Two VDWs are combined in a manner where motion can be transmitted between these VDWs. The scope is limited to a kinematics analysis of a mechanism consisting of ...
Design and manufacture of a linear fresnel reflector prototype for coffee drying applications in Puerto Rico
(2014)
The need and desire to use renewable, sustainable, and efficient energy have led to increased research
in this field as the long term consequences of not doing so will affect the environment. As an alternative
to drying ...
Probing the hydrodynamics of plunging gravity waves through Lagrangian observations of inertial particle dynamics
(2013-07)
Understanding wave breaking phenomena is a challenging problem that still lacks satisfactory understanding. The present study is concerned with the development of novel instrumentation adapted to obtain Lagrangian field ...
On-line performance parameter estimation of SR-30 turbojet engine
(2010-12)
Accurate estimation of jet engines performance parameters is the key to develop reliable diagnostics systems. The development of a reliable and accurate nonlinear model of the SR-30 turbojet engine is proposed. To comply ...
Preparation of copper-bearing nanofluids for thermal applications
(2008)
Stable suspension of nanometer solid particles in suitable solvents, so-called nanofluids, has shown enhanced thermal conductivity when compared with the fluid base; therefore, the preparation and characterization of these ...