{"id":9,"date":"2021-02-23T12:06:12","date_gmt":"2021-02-23T17:06:12","guid":{"rendered":"https:\/\/sites.nd.edu\/xsharon-hu\/?page_id=9"},"modified":"2021-04-14T15:19:27","modified_gmt":"2021-04-14T19:19:27","slug":"circuit-and-architecture-design-with-emerging-technologies","status":"publish","type":"page","link":"https:\/\/sites.nd.edu\/xsharon-hu\/research\/circuit-and-architecture-design-with-emerging-technologies\/","title":{"rendered":"Circuit and architecture design with emerging technologies"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">As the CMOS transistor feature size is approaching its physical limit, we are witnessing an explosion of research endeavors in beyond-CMOS technologies. My work explores circuit and architecture designs that can best exploit the unique features of beyond-CMOS devices to maximize the gain offered by such devices. My research benefits greatly from close collaborations with device experts. Below are the several representation topics.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Processing in memory (PIM)<\/strong> is an attractive architectural paradigm for overcoming the ever-growing challenge of transferring data between a processing element and memory in applications such as machine learning and data analytics applications. Beyond-CMOS devices, such as ferroelectric FETs (FeFETs), can function both as a switch and a storage element, hence is a natural fit for implementing PIM constructs. My group have introduced various FeFET based content addressable memories (e.g., <a href=\"https:\/\/ieeexplore.ieee.org\/stamp\/stamp.jsp?arnumber=8481585\">ternary<\/a>, <a href=\"https:\/\/www.nature.com\/articles\/s41928-019-0321-3\">approximate<\/a>, <a href=\"https:\/\/arxiv.org\/abs\/2011.07095\">multi-bit<\/a>), general-purpose <a href=\"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/3218603.3218640\">compute-in-memory<\/a> arrays, binary <a href=\"https:\/\/ieeexplore.ieee.org\/document\/8342199\">crossbars arrays<\/a>, etc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A <a href=\"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/3218603.3218640\">paper<\/a> introducing an FeFET based compute-in-memory array, co-authored by my Ph.D. student, Dayane Reis, my colleague Mike Niemier and I, received the <strong>Best Paper Award<\/strong> from 2018 International Symposium on Low Power Electronics and Design. Another <a href=\"https:\/\/ieeexplore.ieee.org\/document\/5226358\">paper<\/a> from my group received the <strong>Best Paper Award<\/strong> from 2009 International Symposium on NanoScale Architectures. Below are other representative papers.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>A.F. Laguna, H. Gamaarachchi, X. Yin, M. Niemier, S. Parameswaran and <strong>X. Hu<\/strong>, \u201c<a href=\"https:\/\/ieeexplore.ieee.org\/stamp\/stamp.jsp?arnumber=9256758\">Seed-and-vote based in-memory accelerator for DNA read mapping<\/a>\u201d, <em>International Conference on Computer Aided Design<\/em>, 2020. Article No. 56, pp. 1\u20139.<\/li><li>B. Wu, C. Wang, Z. Wang, Y. Wang, D. Zhang, D. Liu, Y. Zhang and <strong>X. Hu<\/strong>, \u201c<a href=\"https:\/\/ieeexplore.ieee.org\/document\/9198120\/\">Field-free 3T2SOT MRAM for non-volatile cache memories<\/a>\u201d, <em>IEEE Transactions on Circuits and Systems<\/em>, 2020, pp. 4660\u20134669.<\/li><li>D. Reis, A.F. Laguna, M. Niemier and <strong>X. Hu<\/strong>, \u201c<a href=\"https:\/\/ieeexplore.ieee.org\/document\/9116292\">A fast and energy efficient Computing-in-Memory architecture for few-shot learning applications<\/a>\u201d, <em>Design Automation and Test in Europe<\/em>, 2020, pp. 127\u2013132.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Secure hardware and hardware for security<\/strong>. Some unique characteristics, such as ambipolarity, of beyond-CMOS devices make these devices especially suited for building low-cost, secure hardware circuits. My group have introduced several novel circuits to achieve logic obfuscation and\/or prevent side channel attacks. We also proposed accelerators for homomorphic encryption. Below are some representative papers.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>M.M. Sharifi, R. Rajaei, P. Cadareanu, P.-E. Gaillardon, Y. Jin, M. Niemier and <strong>X. Hu<\/strong>, \u201c<a href=\"https:\/\/ieeexplore.ieee.org\/document\/9116554\">A novel TIGFET-based DFF design for improved resilience to power side-channel attacks<\/a>\u201d, <em>Design<\/em> <em>Automation and Test in Europe<\/em>, 2020, pp. 1253\u20131258.<\/li><li>P. Wu, D. Reis, <strong>X. Hu<\/strong> and J. Appenzeller, \u201c<a href=\"https:\/\/www.nature.com\/articles\/s41928-020-00511-7?utm_source=other&amp;utm_medium=other&amp;utm_content=null&amp;utm_campaign=JRCN_1_DD01_CN_NatureRJ_article_paid_XMOL\">Two-dimensional transistors with reconfigurable polarities for secure circuits<\/a>\u201d, <em>Nature Electronics<\/em>, 4,2021, pp. 45\u201353.<\/li><li>D. Reis, J. Takeshita, T. Jung, M. Niemier and <strong>X. Hu<\/strong>, \u201c<a href=\"https:\/\/ieeexplore.ieee.org\/document\/9179010\">Computing-in-Memory for performance and energy efficient homomorphic encryption<\/a>,\u201d <em>IEEE Transactions on VLSI Systems<\/em>, 2020, pp. 2300\u20132313.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>For more detailed description about my research projects in this area, please visit my lab at: TBD.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">My earlier research in the general circuit and architecture design is related to VLSI design and design automation. I have studied problems in high-level synthesis, VLSI floorplanning, and design of special VLSI circuitry for computationally intensive systems.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>As the CMOS transistor feature size is approaching its physical limit, we are witnessing an explosion of research endeavors in beyond-CMOS technologies. My work explores circuit and architecture designs that can best exploit the unique features of beyond-CMOS devices to maximize the gain offered by such devices. My research benefits greatly from close collaborations with [&hellip;]<\/p>\n","protected":false},"author":3879,"featured_media":0,"parent":7,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-9","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.nd.edu\/xsharon-hu\/wp-json\/wp\/v2\/pages\/9","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.nd.edu\/xsharon-hu\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.nd.edu\/xsharon-hu\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.nd.edu\/xsharon-hu\/wp-json\/wp\/v2\/users\/3879"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.nd.edu\/xsharon-hu\/wp-json\/wp\/v2\/comments?post=9"}],"version-history":[{"count":3,"href":"https:\/\/sites.nd.edu\/xsharon-hu\/wp-json\/wp\/v2\/pages\/9\/revisions"}],"predecessor-version":[{"id":60,"href":"https:\/\/sites.nd.edu\/xsharon-hu\/wp-json\/wp\/v2\/pages\/9\/revisions\/60"}],"up":[{"embeddable":true,"href":"https:\/\/sites.nd.edu\/xsharon-hu\/wp-json\/wp\/v2\/pages\/7"}],"wp:attachment":[{"href":"https:\/\/sites.nd.edu\/xsharon-hu\/wp-json\/wp\/v2\/media?parent=9"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}