Adam K. Fontecchio

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Dynamic light scattering was used to analyze the structural and dynamic properties of nematic director field within liquid crystal domains formed in holographic polymer-dispersed liquid crystal transmission gratings. Samples prepared from two different types of prepolymer mixture: one curable with visible (VIS) and another curable with UV light were(More)
We have applied passive Radio Frequency Identification (RFID), typically used for inventory management, to implement a novel knit fabric strain gauge assembly using conductive thread. As the fabric antenna is stretched, the strength of the received signal varies, yielding potential for wearable, wireless, powerless smart-garment devices based on small and(More)
Recent advancements in conductive yarns and fabrication technologies offer exciting opportunities to design and knit seamless garments equipped with sensors for biomedical applications. In this paper, we discuss the design and application of a wearable strain sensor, which can be used for biomedical monitoring such as contraction, respiration, or limb(More)
Wearable smart devices have become ubiquitous, with powered devices capable of collecting real-time biometric information from its users. Typically, these devices require a powered component to be worn and maintained, such as a battery-powered sensor, Bluetooth communications device, or glasses. Pregnancy and infant monitoring devices may be uncomfortable(More)
Since the 1960’s, Computer Assisted Instruction (CAI) has been promoted as the new standard for teaching and learning. Schools were provided with computers and internet connections at an astounding rate in the 1990’s, but there was no correlated increase in student performance. Investigation into this problem has revealed that computer technology is simply(More)
In this work, we report on a program that aimed to expose high school students to nanotechnology. The program involved two NSF GK-12 engineering graduate fellows who developed a series of nanotechnology modules for an introductory engineering elective course in an urban public magnet high school. The fellows implemented the unit in two classrooms during the(More)
Wearable electronics integrate smart sensors and compact computing systems into garments. In this paper, we discuss the design and simulation of a knitted textile RFID sensor for wearable applications. The sensor comprises a textile folded dipole antenna, specifically designed for use with an inductively-coupled RFID microchip at 870 MHz. As opposed to(More)
Multiple antenna communication systems are a solution to meet the demand for pervasive computing and ubiquitous wireless communications. As multiple antenna communication systems become more broadly deployed, integrating unobtrusive antennas into various form factors is becoming increasingly important. Antennas that are flexible and transparent can ease(More)
We have performed a detailed study of the order and dynamics of the commercially available BL038 liquid crystal (LC) inside nanosized (50-300 nm) droplets of a reflection-mode holographic-polymer dispersed liquid crystal (H-PDLC) device where LC nanodroplet layers and polymer layers are alternately arranged, forming a diffraction grating. We have determined(More)