This paper presents a groundbreaking capacitorless buck-boost DC-DC converter that harnesses the inherent parasitic capacitances of discrete planar inductors, eliminating the necessity for an external capacitance. The proposed approach integrates high dielectric material-based thin films, manufactured using nanotechnology processes, into planar magnetic structures, enhancing power density. By intentionally increasing stray capacitance, the converter effectively serves as an output filter element. This study advocates for the application of calcium copper titanate (CCTO) CaCu3T i4O12in the design, renowned for its remarkable dielectric constant of approximately 10, 000 at room temperature. A comprehensive mathematical model for the novel converter approach, encompassing the design of the circuit parameters is presented. Moreover, this paper establishes a detailed circuit model for the new electromagnetic device, verified through Ansys Maxwell finite element analysis tool. To highlight the effectiveness of the proposed methodology, a practical buck-boost design example is presented. Through rigorous simulations, minimum inductance of 20 uH, and the combined filter capacitor Coat 80 uF is estimated.

This paper proposed a composite substrate with$200nm$graphene layer deposited on the base plate of a commercially available IGBT Infineon BSM75GB60DLC model. The proposed solution shows its superiority in reducing the hot spots temperature; specifically the bondwires, which are the most causes to the IGBT defects and system failures. Different thicknesses of graphene layers were considered,$10nm,\ 200nm$and$500nm$. The$200nm$was found to be the optimal thickness to reduce the temperatures by a factor of$28.45\%$or$48.23^{\circ}C$compared to the original design without nano graphene layer. Sapphire substrate was found to provide less lattice mismatch compared to the original$Al_{2}O_{3}$substrate and therefore provided better thermal response. The study included heat sink design based on the specified maximum thermal limits in the device datasheet.$54cm^{3}$heat sink volume size is required to operate the device within its safe operating limits. The heat sink size for the proposed IGBT with the$200nm$graphene layer was found to be$27cm^{3}$, which represents 50% size reduction. The finite element analysis results showed the validity of the proposed solution for future high-power devices.

Low power data management is an approach that distribute the supply power on the various modules in the chip, following certain algorithms such as dynamic voltage sharing (DVS), single input multiple data (SIMD) among others with a coil-less circuit design. The key factors for reducing the power and enhancing the efficiency is attributed to the lower feeding power supply, high device mobility for low power consumption, the device size, and the architecture used in the design. Graphene Nano Ribbon Field Effect Transistors (GNRFET) based Buck and Boost converters were designed for single input/multiple outputs conversion. The design features very high efficiency that exceeds 90% at very high frequencies. The input was 0.7V with outputs of 0.35V and 1.4V for buck and boost converters respectively. The design gains from the high mobility feature of the nano scale GNRFET devices, and the low supply power applied to the various modules in the chip. A 10nm scale channel device with 4 ribbons were considered, and the switch capacitor (SC) approach was utilized. The study of the transient analysis, the static power, dynamic power, and ripple voltages at different design constraints were investigated versus the conversion parameters including the frequency, load, and duty cycles. The efficiency at a high load was estimated to be near 97%, while at low load and lower switching frequencies, the efficiency was estimated to be near 85%.

A novel approach to merge superconducting Josephson Junction (JJ) devices with nanoscale Graphene devices in order to achieve high gain-bandwidth-product on the order of THz was addressed. JJs are ultra-fast devices that consist of two superconducting plates separated by a nanoscale layer of nonconducting material which exhibits quantum tunneling phenomenon. While JJ-based devices have existed since nearly 1962, interfacing them with standard electrical systems has been a challenge for several reasons, including operating temperature, switching speed, and low-signal sensitivity. In this study, we investigated the possibility of utilizing JJ's so-called AC-effect in order to generate high frequency signals that can be accommodated by high speed nanoscale devices. Graphene Nano Ribbon Field Effect Transistors (GNRFET) have been emphasized for their very high frequency operation that is appropriate to accommodate the very high switching speed of the JJ devices. The study is based on the AC JJ effet with generating a sinusoidal current whose frequency directly scales with voltage. For a single-stage GNRFET CS amplifier, a gain of 35.7dB with a bandwidth of 217GHz was achieved, while 10.8dB with a unitary gain of 2.5THz was also accomplished. The paper details the design and interfacing of the JJ with GNRFET devices, targeting high frequency signal generation on the order of hundreds of GHz to THz.

This Full Innovative Practice paper presents a new Peer-Led team Learning (PLTL) recitation model for the sophomore Electronics Analysis and Design course, emphasizing device physics, device models, and analog and digital applications in the Department of Electrical and Computer Engineering at IUPUI. This new PLTL model with small number of students assigned to one peer-leader has enabled students to cooperate with each other and build teamwork, to get more practice with course software, and to better understand the course design component. This new model has overall improved the students' performance in the course. The new model has also enabled the instructor to introduce students to some research topics which led to students being encouraged to enroll in higher level related courses and to pursue further research in these areas. This paper details the structure of this new model, the feedback from students, the PLTL model recitation guidelines for the course semester, and attached projects. The paper also assesses the course objectives using this new model as compared to previous offerings.

This Innovative Practice Work In Progress paper presents an approach for enhancing undergraduate Electromagnetic education.

State of the art technologies in micro- and nano-electromechanical systems (MEMS and NEMS) devices have been proposed to address important issues in renewable energies, health sciences, consumer electronics, and information technology. Incorporation of MEMS / NEMS interfaces when creating a system on chip (SOC) utilizes knowledge of nanotechnology materials and devices, which is delivered as part of the new course. The new course offers software and hardware designs in nano and micro technology devices, along with widely-utilized interfaces to IoT devices and wireless systems. The course features hands-on practice on developing SOC's with MEMS / NEMS devices and is designed to prepare students for industrial and research careers. Advanced devices such as micro-motors/micro-robots, nanomotors/nano-robots, and means of navigating and imaging them within micro and nanoscale dimensions are covered with applications.

This study involves the evaluation of the second implementation of a Research Experiences for Teacher Advancement In Nanotechnology (RETAIN) program offered at Indiana University-Purdue University Indianapolis (IUPUI). RETAIN represents a professional development model for providing high school teachers with laboratory research experiences in nanoscience and related content areas. In this intensive summer program, teachers spend six weeks conducting nanotechnology-related research in an IUPUI lab. As part of the RETAIN program, teachers complete six credit hours of coursework, wherein they translate their research experiences into the design of classroom modules. Teachers are expected to then implement their modules within their own classrooms during the subsequent academic year. This evaluation focuses on teachers' experiences in IUPUI labs during the summer of 2016, along with three teachers' implementation of nanotechnology labs within their courses during the 2016-2017 school year. To evaluate RETAIN, we explored teacher satisfaction, changes in teachers' content knowledge and nanotechnology perceptions, as well as changes in teachers' epistemological beliefs. Further, we explored the impact of the three teachers' module integration on their students' STEM attitudes and nanotechnology perceptions. The findings indicated that teachers were generally satisfied with the research and course experiences. Further, as a result of RETAIN participation, teachers showed increased nanotechnology content knowledge and knowledge of nanotechnology-related careers. Lastly, three teachers' integration of nanotechnology modules indicated that their students had significantly improved perceptions of nanotechnology's potential coupled with more knowledge of nanotechnology-related careers. The paper concludes with considerations of the quantitative findings in light of teachers' written reflections and author observations of teacher module integration in their classrooms.

Faculty members and staff from the Schools of Engineering & Technology, Science, and Education at Indiana University-Purdue University Indianapolis (IUPUI), have developed a model to provide research experience for high school teachers. In this intensive 8 week program, teachers spend 6 weeks in the summer conducting research, and two weeks designing classroom modules based upon their research experience to implement during the academic year.

In this work, we report the outcomes from the IUPUI STEM outreach program “STEMCorp” that inspires high school students to pursue STEM majors. The STEMCorp program was modeled after the Multidisciplinary Undergraduate Research Initiative (MURI) at IUPUI. MURI research program introduces undergraduate students from at least two different departments with mentors from different disciplines to address research issues that may compose both engineering and sciences. The STEMCorp program brings undergraduate students to work with faculty and high school teachers to create a positive impact in enriching the high school students by introducing them to engineering and science with emphasis on nanotechnology for future careers. The program describes the collaborative activities between faculty, undergraduate students and high school STEM teachers in the creation of project-based, student-centered learning modules in the field of nanotechnology. The paper details the activities of the STEMCorp participants including their experiences in developing working partnerships and creating and implementing learning modules in the designated high school courses. The success of the program is assessed by the measurable outcomes of high school students' research projects. Specifically, two different learning modules are presented, including the processes used in the development of these modules and their outcomes. The collaborative research discussions between the faculty, undergraduate students, and high school teachers are detailed, covering research methodologies, hypothesis, and expected outcomes.

This paper details the research participation of undergraduate students from the freshman to the senior year. Four courses were designated to prepare students for a nanotechnology research career. New modes of instructions leading to research participation followed in this curriculum have been reported. This covers integration of knowledge, just in time approach, and project portfolio based curriculum. Courses developed in this track emphasize research and applications in health sciences and renewable energy areas. The structure of the track program was presented before with emphasis on the senior level courses of the track. The work in this paper, however, emphasizes research participation in nanotechnology of the junior students within the electrical engineering, computer engineering, and mechanical engineering disciplines. The multidisciplinary components in nanotechnology research topics were attractive to students to work in team. The topics covered in this course included nanotechnology applications in diabetes, cancer research, and neurosciences. Lecture materials were all from up-to-date research papers, and can be altered with the course updates. Students registered for this course were required to emphasize two research topics seven week each, and prepare research posters in a research day where industrial representatives are invited to participate in the discussions with students. Students who completed this course were interested to continue with nanotechnology individual research and get enrolled in upper level courses. The course starts with introducing students to the nanotechnology applications in various fields, including environment, society, consumer electronics, computers, health sciences, optics, electromagnetics, energy, and medical imaging. The course then introduces students to research issues emphasizing health sciences and renewable energy. Students will be required to expand their research to cover in depth one or two research issues that fall within their interests. In the research projects, students work in team, two students/team, and assignment is given to bath to share the contribution of the project. The course was assessed with student satisfaction, and the objectives and the outcomes of the course were met.

Inter-integrated circuit mode (I2C) software is used to communicate between sensors and on embedded control system utilising PIC182585 MPLAB hardware. These sensors were built as part of a system on-board that includes sensors, a Q2 microcontroller and interface circuitry. The hardware includes a PIC18 processor, a field programmable gate array (FPGA) chip and peripherals. The FPGA chip is used to interface the processor with the peripherals operating at the same clock speed. This hardware design features high-level integration, reliability, high precision and high-speed communications. The system was demonstrated using temperature and CO2 sensors. The overall system was implemented and successfully tested. The response of the multi-sensor system was agreeable with the design parameters. The system is expandable to include other sensors such as light and pressure sensors. Monitoring threshold values should add to the security features of the integrated communication system. The use of a signature detection algorithm to determine threatening situation and/or intrusion within the sittings are discussed as a potential application for home land security. The integrated system features low-power consumption (utilising the sleeping mode of the processors), high-speed communications, security and flexibility to expansion.

In this paper, a class of fuzzy stochastic control systems with random delays is examined. The fuzzy rule base used consists of a collection of r fuzzy IF-THEN rules defined as a function of the conditional variable. The method of theory of invariant cones is used to design a class of local fuzzy control law. A verifiable sufficient condition for stochastic stability of the fuzzy stochastic delay differential equation is given.

A non internal blocking ATM packet switching network using CMOS technology has been developed for an N/spl times/N switch. A multiplexing circuitry with 32 inputs was designed and implemented using simple logic gates. The development has utilized an interconnection network of 1/spl times/32 parallel expander circuits. The control unit consisting of serial shift registers and latches to keep the destination path open for the length of the packet, were designed using MAGIC software and simulated by IRSIM. As low as 5 ns delay was estimated by the 1/spl times/32 expander circuit, while the clock generated by the combinational circuit for latching showed a delay of 190 ns. The system has been fabricated using MOSIS services, and as minimum of 5 ns delay was measured between the input and output nodes of the switching circuit.