Flexible Research Group
Book Contributions, Journal Publications, Report Contributions, Published Conference Papers, Conference Abstracts, and Theses Published from Group are provided here. Click on the references you are interested in viewing, and you will be directed to the appropriate websites where you can access the desired manuscripts.
Book Contributions
2014
2013 (The year our group started at UCLA)
Journal Publications
2023
[60] Lee, R.H., Sainaghi, P., Hopkins, J.B., 2023, “Comparing Mechanical Neural-network Learning Algorithms,” Journal of Mechanical Design, 145(7): 071704 (7 pages)
[59] Archer, N.C., Hopkins, J.B., 2023, “Numerical Determination of Freedom Spaces from Any Set of Twists,” Mechanism and Machine Theory, 185: 105255 (24 pages)
2022
2021
[51] Kuppens, P.R., Bessa, M.A., Herder, J.L., Hopkins, J.B., 2021, “Compliant Mechanisms that use Static Balancing to Achieve Dramatically Different States of Stiffness,” Journal of Mechanisms and Robotics, .13(2): 021010 (6 pages).
2020
2019
[41] Kochmann, D.M., Hopkins, J.B., Valdevit, L., 2019, “Multiscale Modeling and Optimization of the Mechanics of Hierarchical Metamaterials,” MRS Bulletin, 44(10): pp. 773-781.
2018
2017
2016
[21] Haghpanah, B., Ebrahimi, H., Mousanezhad, D., Hamouda, A.M.S., Hopkins, J.B., Vaziri, A., 2016, “Programmable Elastic Metamaterials,” Advanced Engineering Materials, 18(4): pp. 643-649.
2015
[17] Hopkins, J.B., 2015 “A Visualization Approach for Analyzing and Synthesizing Serial Flexure Elements,” Journal of Mechanisms and Robotics, 7(3): 031011 (12 pages).
2014
2013 (The year our group started at UCLA)
2012
2011
2010
Report Contributions
2018
2012
Published Conference Papers (Peer-reviewed)
2021
[51] Sun, F., Panas, R.M., Bekker, L., Pascall, A.J., Farzaneh, A., Hopkins, J.B., “A Set of Turing Complete Mechanical Logic Elements and a Simple Logic Circuit,” Proc. of the 36th Annual Meeting of the American Society for Precision Engineering (ASPE), Minneapolis, MN, November 2021.
[50] Yang, Z., Hopkins, J.B., “High-speed Large-range Flexure-based Six-axis Positioner,” Proc. of the 36th Annual Meeting of the American Society for Precision Engineering (ASPE), Minneapolis, MN, November 2021.
2020
[49] Sun, F., Panas, R.M., Bekker, L., Mancini, J.A., Pascall, A.J., Farzaneh, A., Hopkins, J.B., “Design, Fabrication, and Signal Propagation Characteristics of Micro-mechanical Logic Elements,” Proc. of the 35th Annual Meeting of the American Society for Precision Engineering (ASPE), Virtual Conference, October 2020.
2019
[48] Sun, F., Panas, R.M., Hopkins, J.B., Pascall, A.J., “A Study of Micro-mechanical Logic Elements,” Proc. of the 34th Annual Meeting of the American Society for Precision Engineering (ASPE), Pittsburgh, PA, October 2019.
[47] Luo, C., Jayatilaka, G.C., Song, Y., Ladner, I.S., Cullinan, M.A., Hopkins, J.B., “Design, Fabrication, and Calibration of a Stiffness Programmable Metamaterial,” Proc. of the 34th Annual Meeting of the American Society for Precision Engineering (ASPE), Pittsburgh, PA, October 2019.
[46] Chizari, S., Shaw, L.A., Lim, M.P., Farzaneh, A., Austin, S., Hopkins, J.B., “Microfabrication via Holographic Optical Tweezers and Two-photon Polymerization,” Proc. of the 34th Annual Meeting of the American Society for Precision Engineering (ASPE), Pittsburgh, PA, October 2019.
[45] Panas, R.M., Simonelli, J.M., Karburn, J., Nguyen, V., Enstrom, K., Hopkins, J.B., “Experimental Characterization of Lightfield Directing Array Elements,” Proc. of the 34th Annual Meeting of the American Society for Precision Engineering (ASPE), Pittsburgh, PA, October 2019.
[44] Shaw, L.A., Chizari, S., Lim, M., Porter, M., Austin, S., Hopkins, J.B., “Using Optical Tweezers to Assemble Micro-spheres within Metamaterials that Achieve Engineered Wave Propagation Properties,” Proc. of the 13th International Congress on Artificial Materials for Novel Wave Phenomena – Metamaterials 2019, Rome, Italy, September 2019.
[43] Lee, R., Song, Y., Hopkins, J.B., “Computational Mechanical Metamaterials,” Proc. of the 22nd International Conference on Composite Materials (ICCM22), Melbourne, Australia, August 2019.
2018
[42] Jones, T.H., Ng., J, Xie, Y-H., Hopkins, J.B., “Design of a Graphene Nanoribbon Electrostatic Discharge Compliant Mechanism,” Proc. of the American Society of Mechanical Engineers (ASME) International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE), Quebec City, Quebec, Canada, August 2018.
2017
[41] Shaw, L.A., Chizari, S., Porter, M., Hopkins, J.B., “Automated Assembly with Optical Tweezers,” Proc. of the 32nd Annual Meeting of the American Society for Precision Engineering (ASPE), Charlotte, NC, October 2017.
[40] Zhao, C., Ladner, I.S., Song, Y., Hopkins, J.B., Cullinan, M.A., “Design and Modeling of a Bidirectional MEMS Thermal Actuator,” Proc. of the 32nd Annual Meeting of the American Society for Precision Engineering (ASPE), Charlotte, NC, October 2017.
[39] Hatamizadeh, A., Song, Y., Hopkins, J.B., “Geometry Optimization of Flexure System Topologies Using the Boundary Learning Optimization Tool (BLOT),” Proc. of the American Society of Mechanical Engineers (ASME) International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE), Cleveland, OH, August 2017.
[38] Spadaccini, C.M., Jackson, J.A., Watts, S.E., Tortorelli, D., Duoss, E., Kuntz, J., Hopkins, J.B., Fang, N., “Integrated Computational Materials Engineering (ICME) Approaches to the Design and Fabrication of Architected Materials,” Proc. of the American Institute of Aeronautics and Astronautics (AIAA) Science and Technology Forum and Exposition 2017, Gaylord Texan, Grapevine, Texas, January 2017.
2016
[37] Panas, R.M, Cullinan, M.A., Saha, S.K., Hopkins, J.B., “Micro-Nano TLC Overview of Research in Precision Micro- and Nano-technology,” Proc. of the 31st Annual Meeting of the American Society for Precision Engineering (ASPE), Portland, OR, October 2016.
[36] Shaw, L.A., Chizari, S., Parker, D., Panas, R.M., Shusteff, M., Spadaccini, C.M., Hopkins, J.B., “Additive Fabrication and Micro-Assembly with Scanning Holography,” Proc. of the 31st Annual Meeting of the American Society for Precision Engineering (ASPE), Portland, OR, October 2016.
[35] Song, Y., Panas, R.M., Hopkins, J.B., “Micro-mirror Array: Classification, Review, and Performance Comparison,” Proc. of the 31st Annual Meeting of the American Society for Precision Engineering (ASPE), Portland, OR, October 2016.
[34] Sun, F., Hopkins, J.B., “Mobility Analysis of Interconnected Hybrid Flexure Systems Using Screw Algebra and Graph Theory,” Proc. of the American Society of Mechanical Engineers (ASME) International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE), Charlotte, NC, August 2016.
[33] Shusteff, M., Dudoff, J.K., Browar, A.E.M., Shaw, L.A., Panas, R.M., Hopkins, J.B., Fang, N.X., Spadaccini, C.M., “Optimal Source Beam Shaping for Digital Holographic Lithography,” Proc. of The Optical Society (OSA) Digital Holography and 3-D Imaging (DH) conference, Heidelberg, Germany, July 2016.
[32] Shaw, L.A., Chizari, S., Panas, R.M., Shusteff, M., Spadaccini, C.M., Hopkins, J.B., “Planar Microparticle Assembly and Photopolymerized Joining with Holographic Optical Tweezers,” Proc. of the CLEO: 2016 Laser Science to Photonic Applications Technical Conference, San Jose, CA, June 2016.
[31] Haghpanah, B., Pourrajab, P., Salari-Sharif, L., Hopkins, J.B., Valdevit, L., “Two-dimensional Shape Re-configurable Architectured Materials,” Proc. of the 11th International Conference on Micro Manufacturing (ICOMM), Orange County, CA, March 2016.
2015
[30] Hopkins, J.B., “Flexure Design of Active Microarchitectured Materials that Achieve Programmable Properties via Control,” Proc. of the 30th Annual Meeting of the American Society for Precision Engineering, Austin, TX, November 2015.
[29] Hopkins, J.B., Panas, R.M., Song, Y., “Categorization and Review of Existing Micro-mirror Array Technologies,” Proc. of the 30th Annual Meeting of the American Society for Precision Engineering, Austin, TX, November 2015.
[28] Hopkins, J.B., Panas, R.M., Jackson, J.A., Smith, W.L., Harvey, C.D., Uphaus, T.M., “Hybrid Additive and Microfabrication of an Advanced Micromirror Array,” Proc. of the 30th Annual Meeting of the American Society for Precision Engineering, Austin, TX, November 2015.
[27] Shaw, L.A., Hopkins, J.B., “A Shape-controlled Compliant Microarchitectured Material,” Proc. of the ASME 2015 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE, Boston, MA, August 2015.
[26] Hopkins, J.B., Lee, H., Fang, N.X., Spadaccini, C.M., “Polytope Sector-based Synthesis and Analysis of Microarchitectured Materials with Tunable Thermal Conductivity and Expansion,” Proc. of the ASME 2015 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE, Boston, MA, August 2015.
[25] Hopkins, J.B., Shaw, L.A., Weisgraber, T.H., Farquar, G.R., Harvey, C.D., Spadaccini, C.M., “Organizing Cells Within Non-Periodic Microarchitectured Materials That Achieve Graded Thermal Expansions,” Proc. of the ASME 2015 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE, Boston, MA, August 2015.
2014
[24] Hopkins, J.B., Panas, R.M., “Flexure Design for a High-speed Large-range Tip-tilt-piston Micro-mirror Array,” Proc. of the 29th Annual Meeting of the American Society for Precision Engineering, Boston, MA, November 2014.
[23] Hopkins, J.B., Panas, R.M., “Actuator Design for a High-speed Large-range Tip-tilt-piston Micro-mirror Array,” Proc. of the 29th Annual Meeting of the American Society for Precision Engineering, Boston, MA, November 2014.
[22] Hopkins, J.B., Song, Y., Wang, S., Behbahani, A.H., Josefson, I., “Optimal Actuation of Dynamically Driven Serial and Hybrid Flexure Systems,” Proc. of the ASME 2014 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE, Buffalo, NY, August 2014.
[21] Hopkins, J.B., Rivera, J., Kim, C., “Synthesizing Soft Parallel Robots Comprised of Active Constraints,” Proc. of the ASME 2014 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE, Buffalo, NY, August 2014.
2013 (The year our group started at UCLA)
[20] Hopkins, J.B., Panas, R.M., “Eliminating Parasitic Error in Dynamically Driven Flexure Systems,” Proc. of the 28th Annual Meeting of the American Society for Precision Engineering, St. Paul, MN, October 2013.
[19] Hopkins, J.B., “Analyzing and Designing Serial Flexure Elements,” Proc. of the ASME 2013 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE, Portland, OR, August 2013.
[18] Hopkins, J.B., Panas, R.M., “A Family of Flexures That Eliminate Underconstraint in Nested Large-Stroke Flexure Systems,” Proc. of the 13th International Conference of the European Society for Precision Engineering & Nanotechnology, Berlin, Germany, May 2013.
2012
[17] Hopkins, J.B., McCalib, D.B., “Synthesizing Precision Flexures That Decouple Displacement-based Actuators,” Proc. of the 27th Annual Meeting of the American Society for Precision Engineering, San Diego, CA, October 2012.
[16] Hopkins, J.B., Lange, K.J., Spadaccini, C.M., “Synthesizing the Compliant Microstructure of Thermally Actuated Materials Using Freedom, Actuation, and Constraint Topologies,” Proc. of the ASME 2012 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE, Chicago, IL, August 2012.
[15] Hopkins, J.B., “Modeling and Generating New Flexure Constraint Elements,” Proc. of the 12th International Conference of the European Society for Precision Engineering & Nanotechnology, Stockholm, Sweden, June 2012.
2011
[14] Hopkins, J.B., “Synthesizing Parallel Flexure Concepts that Mimic the Complex Kinematics of Serial Flexures Using Displaced Screw Systems,” Proc. of the ASME 2011 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE, Washington, DC, August 2011.
[13] Yu, J.J., Kong, X.W., Hopkins, J.B., Culpepper, M.L., Dai., J.S., “The Reciprocity of a Pair of Line Spaces,” Proc. of the 13th World Congress in Mechanism and Machine Science, Guanajuato, Mexico, June 2011.
[12] Hopkins, J.B., Panas, R.M., “Design of Flexure-based Precision Transmission Mechanisms Using Screw Theory,” Proc. of the 11th International Conference of the European Society for Precision Engineering & Nanotechnology, Como, Italy, May 2011.
2010
[11] Yu, J.J., Li, S.Z., Pei, X., Su, H., Hopkins, J.B., Culpepper, M.L., “Type Synthesis Principle and Practice of Flexure Systems in the Framework of Screw Theory Part I: General Methodology,” Proc. of the ASME 2010 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE, Montreal, Quebec, Canada, August 2010.
[10] Yu, J.J., Li, S.Z., Pei, X., Su, H., Hopkins, J.B., Culpepper, M.L., “Type Synthesis Principle and Practice of Flexure Systems in the Framework of Screw Theory Part II: Numerations and Synthesis of Large-displacement Flexible Joints,” Proc. of the ASME 2010 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE, Montreal, Quebec, Canada, August 2010.
[9] Yu, J.J., Li, S.Z., Pei, X., Su, H., Hopkins, J.B., Culpepper, M.L., “Type Synthesis Principle and Practice of Flexure Systems in the Framework of Screw Theory Part III: Numerations and Type Synthesis of Flexure Mechanisms,” Proc. of the ASME 2010 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE, Montreal, Quebec, Canada, August 2010.
2009
[8] Hopkins, J.B., Culpepper, M.L., “Synthesis of Multi-axis Serial Flexure Systems,” Proc. of the 24th Annual Meeting of the American Society for Precision Engineering, Monterey, CA, October 2009.
[7] Olsen, B.M., Hopkins, J.B., Howell, L.L., Magleby, S.P., Culpepper, M.L., “A Proposed Extendable Classification Scheme for Compliant Mechanisms,” Proc. of the ASME 2009 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE, San Diego, CA, August 2009.
[6] Hopkins, J.B., Culpepper, M.L., “Determining the Optimal Actuator Placement for Parallel Flexure Systems,” Proc. of the 9th International Conference of the European Society for Precision Engineering & Nanotechnology, San Sebastian, Spain, June 2009.
[5] Thompson, M.K., Thomas, B.C., Hopkins, J.B., “Applying Axiomatic Design to the Educational Process,” Proc. of the 5th International Conference on Axiomatic Design (ICAD), Lisbon, Portugal, March 2009.
2007
[4] Hopkins, J.B., Culpepper, M.L., “A Design Process for the Creation of Precision Flexure Concepts via the Use of Freedom and Constraint Topology,” Proc. of the 22nd Annual Meeting of the American Society for Precision Engineering, Dallas, TX, October 2007.
[3] Hopkins, J.B., Culpepper, M.L., “Synthesis of Multi-degree-of-freedom Precision Flexure Concepts via Freedom and Constraint Topologies,” Proc. of the 22nd Annual Meeting of the American Society for Precision Engineering, Dallas, TX, October 2007.
2006
[2] Hopkins, J.B., Culpepper, M.L., “A Quantitative, Constraint-based Design Method for Multi-axis Flexure Stages for Precision Positioning and Equipment,” Proc. of the 21st Annual Meeting of the American Society for Precision Engineering, Monterey, CA, October 2006.
[1] DiBiasio, C.M., Durand, K.V., Traina, Z., Hopkins, J.B., Slocum, A.H., del Nido, P., Vasilyev, N., “Cardio Door: A Specialized Port to Prevent Air from Entering the Heart during Minimally Invasive Cardiac Surgery,” Proc. of the 2006 NewEra Cardiac Care Conference, 53, Newport Beach, CA, January 2006.
Conference Abstracts (not listed previously)
2022
[48] Archer, N., Hopkins, J.B., “Designing Compliant Mechanisms using Freedom and Constraint Topologies,” 3DEXPERIENCE World 2022, Atlanta, GA, February 2022.
[47] Lee, R., Hopkins, J.B., “Active Metamaterials that Learn to Design Passive Metamaterials,” The 2022 Gordon Research Conference on Multifunctional Materials and Structures: Imparting Intelligence in and Through Self-learning Materials and Structures, Ventura, CA, January 2022.
2021
[46] Hopkins, J.B., “Mechanical Neural-network Architecture Materials that Learn,” 36th Annual Technical Conference of American Society for Composites (ASC), Tri-Agency Symposium on “Multifunctionality, System Endurance, & Intelligent Structures,” Virtual Conference, September 2021.
[45] Kuppens, P.R., Bessa, M.A., Herder, J.L., Hopkins, J.B., “Statically Balanced Architected Materials That Achieve Switchable States of Stiffness,” American Society of Mechanical Engineers (ASME) International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE), Virtual Conference, August 2021.
[44] Hopkins, J.B., “Manufacturing Micro-granular Crystals and Other Advanced Microstructures Using Optical Tweezers,” American Society of Mechanical Engineers (ASME) Manufacturing Science and Engineering Conference (MSEC), Virtual Conference, June 2021 (invited speaker).
[43] Hopkins, J.B., “Design of Architected Materials Using Freedom And Constraint Topologies (FACT),” Materials Research Society (MRS) Spring Meeting and Exhibit, Virtual Conference, April 2021 (invited talk).
2020
[42] Kuppens, P.R., Bessa, M.A., Herder, J.L., Hopkins, J.B., “Fully Compliant Statically Balanced Mechanisms by Opposing Constant Force and Torque,” American Society of Mechanical Engineers (ASME) International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE), St. Louis, MO, August 2020 (This abstract was withdrawn because it was submitted to a symposium that was canceled due to COVID-19).
[41] Chizari, S., Lim, M., Shaw, L., Hopkins, J.B., “3D Optical Fabrication at the Intersection of Two-Photon Lithography and Optical Trapping,” The International Society for Optics and Photonics (SPIE) Nanoscience and Engineering 2020, Virtual Conference, August 2020.
[40] Chizari, S., Lim, M., Austin, S., Shaw, L., Farzaneh, A., Hopkins, J.B., “Using Optical Tweezers and Two-photon Polymerization to Assemble Microspheres,” The International Society for Optics and Photonics (SPIE) Photonics West 2020, San Francisco, CA, February 2020.
[39] Lee, R., Hopkins, J.B., “Metamaterials that Learn their Properties,” The 2020 Gordon Research Conference on Multifunctional Materials and Structures: Progression from Integrated Multifunctionality to Neuromorphic Networks for Autonomy, Ventura, CA, January 2020.
[38] Panas, R.M., Uphaus, T., Cortes, J., Corral, P., Enstrom, K., Pascall, A., Sun, F., Bekker, L., Mancini, J., Farzaneh, A., Hopkins, J.B., Hall, H., Starman, L., “Precision Micro/Nano Team at LLNL,” American Society for Precision Engineering (ASPE) Winter 2020 – Precision Micro-Nano Meeting, Austin, TX, January 2020.
[37] Sun, F., Panas, R.M., Bekker, L., Mancini, J., Uphaus, T., Pascall, A., Farzaneh, A., Hopkins, J.B., “A Study of Mechanical Logic Elements,” American Society for Precision Engineering (ASPE) Winter 2020 – Precision Micro-Nano Meeting, Austin, TX, January 2020.
[36] Farzaneh, A., Sun, F., Pascall, A., Panas, R.M., Hopkins, J.B., “Design and Microfabrication of Mechanical Logic Gates,” American Society for Precision Engineering (ASPE) Winter 2020 – Precision Micro-Nano Meeting, Austin, TX, January 2020.
[35] Lim, M., Chizari, S., Shaw, L., Austin, S., Hopkins, J.B., “Automated Three-dimensional Microgranular Crystal Fabrication,” American Society for Precision Engineering (ASPE) Winter 2020 – Precision Micro-Nano Meeting, Austin, TX, January 2020.
2019
[34] Chizari, S., Lim, M., Porter, M., Austin, S., Hopkins, J.B., “Mechanics of Optical-tweezer Fabricated Micro-granular Crystals,” Materials Research Society (MRS) Fall Meeting and Exhibit, Boston, MA, December 2019 (invited talk).
[33] Hopkins, J.B., “Active and Shape Changing Metamaterials,” 56th Annual Technical Meeting of the Society of Engineering Science (SES), St. Louis, MO, October 2019 (invited keynote speaker).
[32] Panas, R.M., Karburn, J.J., Enstrom, K.G., Nguyen, V.H., Simonelli, J., Hopkins, J.B., “A Micro-architected Mechanism-based Optical Surface,” American Society of Mechanical Engineers (ASME) International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE), Anaheim, CA, August 2019.
[31] Pascall, A., Song, Y., Panas, R.M., Chizari, S., Shaw, L.A., Jackson, J., Bekker, L., Sun, F., Hopkins, J.B., “Material Logic: Mechanical Metamaterials that Compute,” American Society of Mechanical Engineers (ASME) International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE), Anaheim, CA, August 2019.
[30] Luo, C., Song, Y., Zhao, C., Ladner, I., Cullinan, M.A., Hopkins, J.B., “Mechatronic Metamaterials that Achieve Programmable Properties,” American Society of Mechanical Engineers (ASME) International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE), Anaheim, CA, August 2019.
[29] Lee, R., Hopkins, J.B., “Metamaterials that Learn their Properties,” American Society of Mechanical Engineers (ASME) International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE), Anaheim, CA, August 2019.
[28] Chizari, S., Lim, M., Austin, S., Shaw, L.A., Hopkins, J.B., “Automated Three-dimensional Microgranular Crystal Fabrication,” American Society of Mechanical Engineers (ASME) International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE), Anaheim, CA, August 2019.
[27] Farzaneh, A., Pawar, N., Portela, C.G., Greer, J., Hopkins, J.B., “Metamaterial with Fluctuating Poisson’s Ratios,” American Society of Mechanical Engineers (ASME) International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE), Anaheim, CA, August 2019.
[26] Chizari, S., Shaw, L.A., Dotson, M., Song, Y., Hopkins, J.B., “Compliant Rolling-contact Architected Materials,” American Society of Mechanical Engineers (ASME) International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE), Anaheim, CA, August 2019.
[25] Chizari, S., Porter, M., Lim, M., Austin, S., Hopkins, J.B., “Fabrication and Mechanics of Engineered Micro-granular Crystals,” The National Academy of Science/The U.S. National Committee on Theoretical and Applied Mechanics (USNCTAM)/AmeriMech Conference: The Intersection of Advanced Additive Manufacturing, Mechanics, and Materials, Berkeley, CA, June 2019 (by invitation only).
2018
[24] Song, Y., Panas, R.M., Chizari, S., Shaw, L.A., Jackson, J.A., Hopkins, J.B., Pascall, A.J., “Additively Manufacturable Micro-mechanical Logic Gates,” Materials Research Society (MRS) Fall Meeting and Exhibit, Boston, MA, November 2018
[23] Sun, F., Hopkins, J.B., “Design of Aperiodic Metamaterials with Anisotropic Stiffness,” Architectured Materials: Advances in Modeling, Design, Fabrication, Characterization, and Applications mini-symposium within the American Society of Civil Engineers (ASCE) Engineering Mechanics Institute Conference (EMI) 2018, Cambridge, MA, May 2018.
[22] Shaw, L.A., Chizari, S., Hopkins, J.B., “Enabling the Dynamic Properties of Engineered Micro-granular Crystals via Optical Tweezers Fabrication,” Meta-structures: Dynamics, Topology and Related Opportunities, An ARO-Funded Workshop, Atlanta, GA, May 2018.
[21] Shaw, L.A., Dotson, M.B., Chizari, S., Song, Y., Hopkins, J.B., “Compliant Rolling-contact Architectured Materials for Shape Reconfiguration,” American Physical Society (APS) March Meeting 2018, Los Angeles, CA, March 2018.
[20] Simonelli, J.M., Panas, R.M., Hopkins, J.B., “Modeling and Control of an Advanced Micromirror Array,” 2018 Winter Topical Meeting of the American Society for Precision Engineering (ASPE) on Precision Engineering for Micro and Nanotechnology, Livermore, CA, February 2018.
[19] Song, Y., Pascall, A., Panas, R.M., Hopkins, J.B., Mancini, J., “Feasibility Study on Micro-mechanical Logic Gates and Systems,” 2018 Winter Topical Meeting of the American Society for Precision Engineering (ASPE) on Precision Engineering for Micro and Nanotechnology, Livermore, CA, February 2018.
[18] Shaw, L.A., Chizari, S., Austin, S., Barranco, R., Hopkins, J.B., “Automated 3D Assembly with Holographic Optical Tweezers,” 2018 Winter Topical Meeting of the American Society for Precision Engineering (ASPE) on Precision Engineering for Micro and Nanotechnology, Livermore, CA, February 2018.
[17] Shaw, L.A., Dotson, M.B., Chizari, S., Song, Y., Hopkins, J.B., “Shape Morphing Compliant Rolling-contact Metamaterials,” The 2018 Gordon Research Conference on Multifunctional Materials and Structures: Bridging the Gap between Biological and Synthetic Systems, Ventura, CA, January 2018.
2017
[16] Song, Y., Zhao, C., Ladner, I., Cullinan, M., Hopkins, J.B., “Thermally Actuated Metamaterial that Achieves Programmable Properties,” American Society of Mechanical Engineers (ASME) International Mechanical Engineering Congress and Exposition (IMECE), Tampa, FL, November 2017.
[15] Shaw, L.A., Samira, C., Dotson, M.B., Song, Y., Hopkins, J.B., “Design and Fabrication of Compliant Rolling-contact Metamaterials,” American Society of Mechanical Engineers (ASME) International Mechanical Engineering Congress and Exposition (IMECE), Tampa, FL, November 2017.
[14] Austin, S.P., Shaw, L.A., Hopkins, J.B., “Micro-fabrication via Optical Trapping and Photopolymerization,” Annual Biomedical Research Conference for Minority Students (ABRCMS), Phoenix, AZ, November 2017.
[13] Dotson, M.B., Samira, C., Hopkins, J.B., “Design of 3D Printed Compliant Rolling-contact Metamaterials,” 54th Annual Technical Meeting of the Society of Engineering Science (SES), Boston, MA, July 2017.
[12] Sun, F., Hopkins, J.B., “Design of 3D Printed Non-periodic Metamaterials with Anisotropic Stiffness,” 54th Annual Technical Meeting of the Society of Engineering Science (SES), Boston, MA, July 2017.
2016
[11] Haghpanah, B., Valdevit, L., Salari-Sharif, L., Hopkins, J.B., “Static and Dynamic Response of Multi-stable Metamaterials,” 53rd Annual Technical Meeting of the Society of Engineering Science (SES), College Park, MD, October 2016.
[10] Haghpanah, B., Pourrajab, P., Salari-Sharif, L., Hopkins, J.B., Valdevit, L., “Architected Shape Reconfigurable Materials,” The Hopkins Extreme Materials Institute 2016 Mach Conference, Annapolis, MD, April 2016.
[9] Song, Y., Hopkins, J.B., “Design of Actively Controlled Microarchitectures with Programmable Mechanical Properties,” The 2016 Gordon Research Conference on Multifunctional Materials and Structures: Science of Autonomic, Adaptive and Self-Sustaining Systems, Ventura, CA, February 2016.
2015
[8] Hopkins, J.B., Shaw, L.A., “Analytically Characterizing the Dynamic Response of Multi-phased Microarchitectured Materials Subjected to Thermal Loads,” Materials Research Society (MRS) Fall Meeting and Exhibit, Boston, MA, December 2015.
[7] Haghpanah, B., Pourrajab, P., Salari-Sharif, L., Hopkins, J.B., Valdevit, L., “Shape Reconfigurable Soft Structures,” Materials Research Society (MRS) Fall Meeting and Exhibit, Boston, MA, December 2015.
[6] Wang, Q., Jackson, J.A., Ge, Q., Hopkins, J.B., Spadaccini, C.M., Fang, N.X., “3D Printed Structures with Negative Thermal Expansion,” Materials Research Society (MRS) Fall Meeting and Exhibit, Boston, MA, December 2015.
[5] Wang, Q., Jackson, J.A., Ge, Q., Hopkins, J.B., Spadaccini, C.M., Fang, N.X., “3D Printed Structures with Negative Thermal Expansion,” American Society of Mechanical Engineers (ASME) International Mechanical Engineering Congress and Exposition (IMECE), Houston, TX, November 2015.
[4] Haghpanah, B., Hopkins, J.B., Valdevit, L., “Shape Reconfigurable Soft Structures,” 52nd Annual Technical Meeting of the Society of Engineering Science (SES), College Station, TX, October 2015.
[3] Hopkins, J.B., Song, Y., “Actively Controlled Microarchitectured Materials with Programmable Properties,” The Hopkins Extreme Materials Institute 2015 Mach Conference, Annapolis, MD, April 2015.
2013 (The year our group started at UCLA)
[2] Hopkins, J.B., Weisgraber, T.H., Lange, K.J., Spadaccini, C.M., Harvey, C.D., Farquar, G.R., “Analytical Tools for Optimizing the Effective Properties of Microstructural Architectures,” Materials Research Society (MRS) Fall Meeting and Exhibit, Boston, MA, December 2013.
2012
[1] Hopkins, J.B., “Engineering the Microstructural Architecture of New Materials Using Freedom, Actuation, and Constraint Topologies (FACT),” 22nd Annual International Workshop on Computational Mechanics of Materials IWCMM XXII, Baltimore, MD, September 2012.
Theses Published from Group
2020
[8] Samira Chizari, 2020, "Advancing Two-photon Lithography by Integrating Microfluidics and Optical Tweezers,” Ph.D. Thesis, University of California, Los Angeles.
2018
[7] Talmage Jones, 2018, “Mechanical Design of Graphene Nanoribbon Compliant Mechanisms for Electrostatic Discharge,” Master’s Thesis, University of California, Los Angeles.
[6] Yuanping (Adam) Song, 2018, “Design and Optimization of Active Microarchitectured Metamaterials,” Ph.D. Thesis, University of California, Los Angeles.
[5] Lucas A. Shaw, 2018, “Additive Microfabrication with Holographic Optical Tweezers,” Ph.D. Thesis, University of California, Los Angeles.
[4] Frederick Sun, 2018, “Analysis and Synthesis of Flexure Systems via Screw Algebra and Graph Theory,” Ph.D. Thesis, University of California, Los Angeles.
2010
2007
2005