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Smart implants have the potential to enable personalized care regimens for patients. However, the integration of smart implants into daily clinical practice is limited by the size and cost of available sensing technology. Passive resonant sensors are an attractive alternative to traditional sensing technologies because they obviate the need for on-sensor signal conditioning or telemetry and are substantially...
We have developed a simple wireless pressure sensor that consists of only three electrically isolated components. Two conductive spirals are separated by a closed cell foam that deforms when exposed to changing pressures. This deformation changes the capacitance and thus the resonant frequency of the sensors. Prototype sensors were submerged and wirelessly interrogated while being exposed to physiologically...
The purpose of this study was to develop and deploy a low cost vertical jump platform using readily available materials for Science, Technology, Engineering, and Mathematics (STEM) education and outreach in the inner city. The platform was used to measure the jumping ability of participants to introduce students to the collection and analysis of scientific data in an engaging, accessible manner. This...
Passive, LC resonators have the potential to serve as small, robust, low cost, implantable sensors to wirelessly monitor implants following orthopedic surgery. One significant barrier to using LC sensors is the influence on the sensor's resonance of the surrounding conductive high permittivity media in vivo. The surrounding media can detune the resonant frequency of the LC sensor resulting in a bias...
STEM educational practices not only have limited success in engaging students from underrepresented groups, but also often fail to prepare future scientists and engineers with an appreciation for the social and environmental concerns that underpin their work. Rather than approaching these challenges separately, they can both be addressed by “tuning” STEM education practices to be more socially conscious...
Increasing the numbers of black, latino and native youth in STEM careers is both an important way to reduce poverty in low income communities, and a contribution to the diversity of thought and experience that drives STEM research. But underrepresented youth are often alienated from STEM. Two new forms of social capital have been identified that can be combined to create a learning environment in...
Acute compartment syndrome (ACS) is a true orthopaedic emergency. The potential sequelae of an undiagnosed ACS include muscle necrosis, contracture, and in some cases amputation. We have developed a simple, wireless, passively-powered sensor that has the potential to provide continuous monitoring of intracompartmental pressure in vivo. This will allow clinicians to make an early diagnosis of ACS which...
Osteoarthritis is one of the leading causes of chronic pain and disability in the United States. The gold standard to treat osteoarthritis of the knee is to perform a total knee replacement. Post-operatively, as high as 21% of total knee replacement patients experience moderate to severe anterior knee pain. The exact mechanism(s) of anterior knee pain remains unknown. Patellofemoral contact forces...
The resonant behavior of passive sensor systems are affected electrical properties of nearby materials. Encapsulation of passive sensors allows them to be deployed across a wide range of applications without the need for significant redesign. The effects of different materials and media in close proximity to the sensor were compared between a sensor before and after encapsulation. The thickness of...
A hands-on learning module called “Science of the Slam” is created that taps into the passions and interests of an under-represented group in the fields of Science, Technology, Engineering and Mathematics (STEM). This is achieved by examining the use of the scientific method to quantify the biomechanics of basketball players who are good at performing the slam dunk. Students already have an intrinsic...
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