2005 — 2009 |
Choi, Jin-Woo Gunturk, Bahadir |
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information |
Sensor: Joint Hardware and Software Approaches For Improved Image Sensing @ Louisiana State University & Agricultural and Mechanical College
Intellectual Merit: The potential impact of sensor technologies on a wide range of applications has been realized; and the research on manufacturing small, accurate, low-cost, and long-lifetime sensors has accelerated. Fast, reliable, and intelligent communication networks are required to improve performance and functionality. Future sensing systems will integrate physical characteristics of sensors, communications, and software to achieve the best possible performance. No matter what type of material or technology is used, sensors will certainly have physical limitations in terms of accuracy, resolution, lifetime, etc. Through the joint design of hardware and software components of a sensing system, it is possible to overcome these limitations. The focus of this research will be on novel image sensing systems with integrated icroactuators. There is an increasing demand for high-resolution, high-dynamic-range, and low-noise images not only to give the viewer a high-quality picture but also to provide additional detail that may be critical in various applications. Digital cameras, surveillance systems, medical imaging, aerial/satellite imaging, scanning/printing devices, and high-de.nition TV systems are some of the application areas where high-quality images are desired. Here, we propose a microactuator-based image sensing system to produce high-dynamic-range and high-resolution images. We propose to design a system where image sensor is jittered by embedded microactuators. The jitter amounts are predetermined and controlled; and several images are captured during the whole process. These images are then processed to produce a higherresolution and higher-dynamic-range image. The main contributions of the proposed research are as follows: To design a sensor system demonstrating the possibility that physical limitations can be exceeded by integrating hardware and software components To have a more realistic model of the imaging process to be used in inverse problems in image processing and computer vision applications To develop image reconstruction methods that can handle potential changes in illumination conditions and camera settings To analyze spectral correlation in color images and to investigate ways of exploiting it in image processing applications Broader Impact: The proposed research will have important impact on surveillance and security applications, scienti.c and commercial products, and health industry. Companies that produce image-related products, such as digital cameras, camcorders, high-de.nition TV, biomedical imaging devices, microscale imaging devices may greatly utilize from the proposed research. The problem of high-resolution and high-dynamic range image reconstruction is also expected to have even broader implications in information fusion and information theory. It is closely related to the information content and the compressibility of video data. The cross-disciplinary nature of the project will open up new research directions. Although this is the primary impact, the proposal will have an educational impact as well. The results of this research will enhance the content of several courses (e.g., Introduction to Computer Vision, Image Analysis I, Image Analysis II, and Integrated Sensors and Actuators courses that are o.ered by the PI and the co-PI at LSU.) As part of this research, the PIs plan to create a variety of independent projects in which undergraduates can enroll and perform research for academic credit. For doctoral students the major educational component is the dissertation research itself. The research problems will require that the students become experts in more than one areas, including signal, image, and video processing, pattern recognition, information theory, optimization, real-time implementations, and hardware design/manufacture. All of this will be done in the context of well-posed problems that have practical applications and each will lead to a Ph.D. thesis.
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0.939 |
2008 — 2012 |
Choi, Jin-Woo |
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information |
Collaborative Research: Microfluidics For Multiple Engineering Disciplines @ Louisiana State University & Agricultural and Mechanical College
Engineering Other -(59) Microfluidics is a branch of physics and biotechnology that studies the behavior of fluids at the microscale and the design of Micro-Electronic Mechanical Systems (MEMS) that takes advantage of such behavior. Fluids on these small scales behave differently than do fluids at the macro-level because factors such as surface tension, energy dissipation, inertia, and electrokinetics begin to predominate. The objective of this project is to adapt and implement an undergraduate course on microfluidics at partnering institutions. The course consists of inquiry-based modules supplemented with lectures and reading materials employing educational uses of technology exploring the latest research in microfluidics. The courses will be offered in a variety of engineering programs including the electrical, mechanical, and biomedical disciplines. Students are collaborating on a group project that follows the full-cycle microfluidic system design approach. The course materials are being compiled to produce a textbook on microfluidic theory and practice that is suitable for undergraduate instruction. In addition to the textbook, the results from this project will be disseminated through several engineering education venues.
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0.939 |
2014 — 2017 |
Srivastava, Ashok (co-PI) [⬀] Choi, Jin-Woo Peng, Lu [⬀] |
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information |
Shf: Small: Leveraging Dynamic Pin Switching to Power Up Dark Silicon and Increase Off-Chip Bandwidth @ Louisiana State University & Agricultural and Mechanical College
The end of Dennard Scaling, i.e., as transistors get smaller the power density is no longer constant, has led to a large number of inactive or significantly under-clocked transistors on modern chip multi-processors in order to comply with the power budget and prevent overheating. This so-called ?dark silicon? is one of the most critical constraints that will hinder scaling in accordance with Moore?s Law in the future. Additionally, off-chip memory bandwidth has also proven to be a major performance limiting factor, especially for multi- and many-core processors.
To address these concerns, this project proposes a novel design in which off-chip pins can dynamically switch between supplying power and transmitting signals. The circuit implementation for the proposed dynamic pin switching design, requiring only minor changes to existing processor and motherboard circuitry, will be investigated. Many issues including the impact of interfacing with the DRAM and the power delivery network, signal transmission and integrity, thermal issues, and area overhead will be thoroughly and carefully considered. A switchable pin design could be used to mitigate dark silicon by delivering extra power or to boost processor performance by increasing memory bandwidth. The broader impacts include incorporating the research advances into undergraduate and graduate education, as well as K-12 outreach activities.
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0.939 |
2018 — 2021 |
Choi, Jin-Woo |
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information |
Ires Track I: Collaborative Research: Interdisciplinary Research in Korea On Applied Smart Systems (Irika) For Undergraduate Students @ Louisiana State University & Agricultural and Mechanical College
Interdisciplinary Research in Korea on Applied smart systems (IRiKA) for Undergraduate Students will provide a cohort of five US undergraduate students per year with the opportunity to conduct research for 8 weeks at Korea's top-ranked universities with state-of-the-art research facilities: Seoul National University, Korea Advanced Institute of Science and Technology and Ewha Womans University. Over the lifetime of this 3-year project, 15 students will participate. Students from underrepresented groups will be recruited. The unifying research theme of IRiKA is smart systems with the subtopics of sensors, emerging electronics, and materials and process development. In addition to lab work and weekly cohort research meetings, IRiKA students will visit Korea's government research institutions and global leaders in the tech industry such as Samsung, LG, and Hyundai. The distinctive features of IRiKA are: 1) A cohort experience bringing the US participants together; 2) Vetted and structured professional development program tailored for both US students and Korean mentors; and 3) Availability of follow-on collaborative projects in US and Korea to facilitate a sustained global network of mentorship. Students will gain formative research skills and learn how smart systems brings together interdisciplinary technological solutions for manufacturing, healthcare, energy, safety and security, transportation, and logistics. The international aspect of the IRiKA will help students recognize their place in the global scientific community. The participants will present their work at their home institutions upon their return and will be incentivized to publish in a peer-reviewed journal or present at a conference for broader dissemination.
Interdisciplinary Research in Korea on Applied smart systems (IRiKA) for Undergraduate Students will engage students in interdisciplinary research, help them develop a global perspective on collaboration, and motivate them to pursue a career in STEM research. Efforts will be made to attract students underrepresented in STEM and/or with limited STEM research opportunities. IRiKA takes a scaffolded mentorship approach that fosters students' growth from a relatively dependent status to as independent a status as their competence warrants. Smart systems incorporate sensing, actuation, wireless connectivity, and machine learning. Examples of research projects that individual students will conduct during 8 weeks in Korea include: Development of an air-borne particle sensing system for health monitoring and air quality monitoring; Development of miniature and micro power generation systems to enable autonomous sensor systems; and Development of a light-weight, flexible point-of-care device consisting of microfluidic channels and reduced graphene oxide-based biosensors. Upon return to the US, students will be able to engage in follow-on projects in areas such as convergent IoT systems at University of Florida's NSF I/UCRC Multi-functional Integrated Systems Technology (MIST) center and wearable sensor systems at Louisiana State University.
This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
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0.939 |
2019 — 2022 |
Warner, Isiah [⬀] Choi, Jin-Woo Mccarter, Kevin |
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information |
Analytical Studies Using Ionic Liquids, Gumbos, and Nanogumbos @ Louisiana State University & Agricultural and Mechanical College
With support from the Chemical Measurement and Imaging Program in the Division of Chemistry, Professors Isiah Warner, Jin-Woo Choi, and Kevin McCarter and their groups at Louisiana State University are using liquid and solid organic salts as the basis for new kinds of chemical sensors for important and biomedically relevant analytes. These solid phase salts are being formulated as nanomaterials to enable additional analytical applications. The probe involves coupling the salts with a "quartz crystal microbalance" (QCM) - an instrument normally used for simply weighing minute amounts of materials, but in this case providing selective sensing based on the selective interactions of the salts with target analytes. Miniature versions of this novel instrumentation are being developed to enable use as portable sensors for analyses of volatile analytes. The work exposes a diverse group of students to state-of-the-art research in chemical instrumentation through research opportunities and extensive public outreach.
These studies focus on ionic liquids and solid-state materials derived from a "Group of Uniform Materials Based on Organic Salts" (GUMBOS), including nanomaterials derived from GUMBOS (nanoGUMBOS). The nanoGUMBOS can be safe and effective alternatives relative to many current nanomaterials used for bioanalytical applications. The work targets novel, useful, and environmentally friendly analytical applications. For example, strategies are being developed for selective measurement of analytically important biomedical targets through novel solvent and solid phase extractions. In combination with the QCM, the GUMBOs can serve in sensors using multiple analytical strategies. Novel QCM micro-instrumentation is being developed to enhance the range of analytical applications for this methodology.
This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
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0.939 |