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 

[2] Duoss, E., Zhu, C., Sullivan, K., Vericella, J., Hopkins, J.B., Zheng, R., Pascall, A., Weisgraber, T., Deotte, J., Frank, J., Lee, H., Kolesky, D., Lewis, J., Tortorelli, D., Saintillan, D., Fang, N., Kuntz, J., Spadaccini, C., 2014, “Part I Reliable Manufacturing with Advanced Materials: Additive Micro-Manufacturing of Designer Materials,” (pp. 13-24) in Materials Challenges and Testing for Manufacturing, Mobility, Biomedical Applications and Climate, Edited by Udomkichdecha, W., Bollinghaus, T., Manonukul, A., Lexow, J., Springer, Cham, Switzerland.

   2013    (The year our group started at UCLA)

[1] Hopkins, J.B., 2013, “Chapter 6: Synthesis Through Freedom and Constraint Topologies,” (pp. 79-92) in Handbook of Compliant Mechanisms, Edited by Howell, L.L., Magleby, S.P., Olsen, B.M., John Wiley & Sons Ltd, Oxford, UK.

Journal Publications

   2019

[43] 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 

[42] Poon, R., Hopkins, J.B., 2019, “Phase-changing Metamaterial Capable of Variable Stiffness and Shape Morphing,” Advanced Engineering Materials, DOI: https://doi.org/10.1002/adem.201900802 (selected by the editor to be featured in Advanced Science News)

[41] Luo, C., Song, Y., Zhao, C., Thirumalai, S., Ladner, I., Cullinan, M.A., Hopkins, J.B., 2019, “Design and Fabrication of a Three-dimensional Meso-sized Robotic Metamaterial with Actively Controlled Properties,” Materials Horizons, DOI: 10.1039/C9MH01368G

 

[40] Song, Y., Panas, R.M., Chizari, S., Shaw, L.A., Mancini, J.A., Hopkins, J.B., Pascall, A.J., 2019, “Additively Manufacturable Micro-Mechanical Logic Gates,” Nature Communications, 10: 882 (6 pages).

 

[39] Chizari, S., Shaw, L.A., Hopkins, J.B., 2019, “Simultaneous Printing and Deformation of Microsystems via Two-Photon Lithography and Holographic Optical Tweezers,” Materials Horizons, 6(2): pp. 350-355.

[38] Shaw, L.A., Sun, F., Portela, C.M., Barranco, R.I., Greer, J.R., Hopkins, J.B., 2019, “Computationally Efficient Design of Directionally Compliant Metamaterials,” Nature Communications, 10: 291 (13 pages).

   2018

[37] Shaw, L.A., Chizari, S., Dotson, M.B., Song, Y., Hopkins, J.B., 2018, “Compliant Rolling-contact Architected Materials for Shape Reconfigurability,” Nature Communications, 9: 4594 (12 pages).

 

[36] Delissen, A., Radaelli, G., Shaw, L.A., Hopkins, J.B., Herder, J.L., 2018, “Design of an Isotropic Metamaterial with Constant Stiffness and Zero Poisson’s Ratio over Large Deformations,” Journal of Mechanical Design, 140(11): 111405 (10 pages).

[35] Porter, M.D., Giera, B., Panas, R.M., Shaw, L.A., Shusteff, M., Hopkins, J.B., 2018 “Experimental Characterization and Modeling of Optical Tweezer Particle Handling Dynamics,” Applied Optics, 57(22): pp. 6565-6571.

[34] Shaw, L.A., Chizari, S., Hopkins, J.B., 2018, “Improving the Throughput of Automated Holographic Optical Tweezers,” Applied Optics, 57(22): pp. 6396-6402.

[33] Shaw, L.A., Chizari, S., Shusteff, M., Naghshi-Nilchi, H., Di Carlo, D., Hopkins, J.B., 2018, “Scanning Two-photon Continuous Flow Lithography for Synthesis of High-resolution 3D Microparticles,” Optics Express, 26(10): pp. 13543-13548.

[32] Hatamizadeh, A., Song, Y., Hopkins, J.B., 2018, “Optimizing the Geometry of Flexure System Topologies Using the Boundary Learning Optimization Tool (BLOT),” Mathematical Problems in Engineering, Volume 2018, Article ID 1058732, (14 pages).

[31] Song, Y., Panas, R.M., Hopkins, J.B., 2018, “A Review of Micromirror Arrays,” Precision Engineering, 51: pp. 729-761.

   2017

[30] Shaw, L.A., Spadaccini, C.M., Hopkins, J.B., 2017, “Scanning Holographic Optical Tweezers,” Optics Letters, 42(15): pp. 2862-2865 (highlighted on the journal's website as the editor's pick).

[29] Sun, F., Hopkins, J.B., 2017, “Mobility and Constraint Analysis of Interconnected Hybrid Flexure Systems via Screw Algebra and Graph Theory,” Journal of Mechanisms and Robotics, 9(3): pp. 031018 (12 pages).

[28] Hopkins, J.B., Panas, R.M., Song, Y., White, C.D., 2017, “A High-speed Large-range Tip-tilt-piston Micromirror Array,” Journal of Microelectromechanical Systems, 26(1): pp. 196-205.

   2016

[27] Hopkins, J.B., McCalib Jr., D., 2016, “Synthesizing Multi-axis Flexure Systems with Decoupled Actuators,” Precision Engineering, 46: pp. 206-220.

[26] Wang, Q., Jackson, J.A., Ge, Q., Hopkins, J.B., Spadaccini, C.M., Fang, N.X., 2016, “Lightweight Mechanical Metamaterials with Tunable Negative Thermal Expansion,” Physical Review Letters, 117(17): 175901 (6 pages) (featured as the first highlighted article in the issue by the editor's suggestion on the journal's website).​

[25] Haghpanah, B., Salari-Sharif, L., Pourrajab, P., Hopkins, J.B., Valdevit, L., 2016, “Multistable Shape-Reconfigurable Architected Materials,” Advanced Materials, 28(36): pp. 7915-7920 (an image of the research is featured on the inside back cover of the Advanced Materials issue and the research was also highlighted in Nature, 535: pp. 327.

[24] Shaw, L.A., Chizari, S., Panas, R.M., Shusteff, M., Spadaccini, C.M., Hopkins, J.B., 2016, “Holographic Optical Assembly and Photopolymerized Joining of Planar Microspheres,” Optics Letters, 41(15): pp. 3571-3574.

[23] Song, Y., Dohm, P.C., Haghpanah, B., Vaziri, A., Hopkins, J.B., 2016, “An Active Microarchitectured Material that Utilizes Piezo Actuators to Achieve Programmable Properties,” Advanced Engineering Materials, 18(7): pp. 1113-1117 (featured on Materials Views).

[22] Hopkins, J.B., Shaw, L.A., Weisgraber, T.H., Farquar, G.R., Harvey, C.D., Spadaccini, C.M., 2016, “Design of Nonperiodic Microarchitectured Materials that Achieve Graded Thermal Expansions,” Journal of Mechanisms and Robotics, 8(5): 051010 (11 pages).

[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.

[20] Hopkins, J.B., Song, Y., Lee, H., Fang, N.X., Spadaccini, C.M., 2016, “Polytope Sector-based Synthesis and Analysis of Microstructural Architectures with Tunable Thermal Conductivity and Expansion,” Journal of Mechanical Design, 138(5): 051401 (10 pages).

   2015

[19] Shaw, L.A., Hopkins, J.B., 2015, “An Actively Controlled Shape-morphing Compliant Microarchitectured Material,” Journal of Mechanisms and Robotics, 8(2): 021019 (10 pages).

[18] Singh, G., Hopkins, J.B., 2015, “General Selection of Lattice Shape in Ductile-reinforced Brittle Structures for Increased Stiffness,” Composite Structures, 131: pp. 325-332.

[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).

[16] Panas, R.M., Hopkins, J.B., 2015, “Eliminating Underconstraint in Double Parallelogram Flexure Mechanisms,” Journal of Mechanical Design, 137(9): 092301 (9 pages).

[15] Hopkins, J.B., Rivera, J., Kim, C., Krishnan, G., 2015, “Synthesis and Analysis of Soft Parallel Robots Comprised of Active Constraints,” Journal of Mechanisms and Robotics, 7(1): 011002 (13 pages). (submitted by invitation to a special edition)

   2014

[14] Hopkins, J.B., Vericella, J.J., Harvey, C.D., 2014, “Modeling and Generating Parallel Flexure Elements,” Precision Engineering, 38(3): pp. 525-537.

   2013    (The year our group started at UCLA)

[13] Hopkins, J.B., 2013, “Designing Hybrid Flexure Systems and Elements Using Freedom and Constraint Topologies,” Mechanical Sciences, 4: pp. 319-331.

[12] Hopkins, J.B., 2013, “Synthesizing Parallel Flexures That Mimic the Kinematics of Serial Flexures Using Freedom and Constraint Topologies,” Journal of Mechanisms and Robotics, 5(4): 041004 (9 pages).

[11] Hopkins, J.B., Lange, K.J., Spadaccini, C.M., 2013, “Designing Microstructural Architectures with Thermally Actuated Properties Using Freedom, Actuation, and Constraint Topologies,” Journal of Mechanical Design, 135(6): 061004 (10 pages).

[10] Panas, R.M., Hopkins, J.B., Lustrino, M., Panas, C.W., Watral, A., 2013, “An Instrument to Characterize the Dynamic Compliance of Skin,” Measurement, 46(3): pp. 1094-1100.

[9] Hopkins, J.B., Panas, R.M., 2013, “Design of Flexure-based Precision Transmission Mechanisms Using Screw Theory,” Precision Engineering, 37(2): pp. 299-307 (Posted to Advances in Engineering by invitation—http://advanceseng.com).

   2012

[8] Hopkins, J.B., 2012, “Precision Flexure Bearing Design: On the Use of Freedom and Constraint Topologies,” Mikroniek Professional Journal on Precision Engineering, 52(5): pp. 34-39. (submitted by invitation)

[7] DiBiasio, C.M., Hopkins, J.B., 2012, “Sensitivity of Freedom Spaces During Flexure Stage Design via FACT,” Precision Engineering, 36(3): pp. 494-499.

   2011

[6] Vasilyev, N.V., Kawata, M., DiBiasio, C.M., Durand, K.V., Hopkins, J.B., Traina, Z., Slocum, A.H., del Nido, P.J., 2011, “A Novel Cardioport for Beating-heart, Image-guided Intracardiac Surgery,” Journal of Thoracic and Cardiovascular Surgery, 142(6): pp. 1545-1551.

 

[5] DiBiasio, C.M., Durand, K.V., Hopkins, J.B., Traina, Z., Slocum, A.H., Vasilyev, N.V., del Nido, P.J., 2011, “Design of a Surgical Port for Minimally Invasive Beating-heart Intracardial Procedures,” Journal of Medical Devices, 5(4): pp. 045001-045005.

[4] Hopkins, J.B., Culpepper, M.L., 2011, “Synthesis of Precision Serial Flexure Systems Using Freedom and Constraint Topologies (FACT),” Precision Engineering, 35(4): pp. 638-649.

   2010

[3] Hopkins, J.B., Culpepper, M.L., 2010, “A Screw Theory Basis for Quantitative and Graphical Design Tools that Define Layout of Actuators to Minimize Parasitic Errors in Parallel Flexure Systems,” Precision Engineering, 34(4): pp. 767-776.

[2] Hopkins, J.B., Culpepper, M.L., 2010, “Synthesis of Multi-degree of Freedom, Parallel Flexure System Concepts via Freedom and Constraint Topology (FACT)—Part I: Principles,” Precision Engineering, 34(2): pp. 259-270.

[1] Hopkins, J.B., Culpepper, M.L., 2010, “Synthesis of Multi-degree of Freedom, Parallel Flexure System Concepts via Freedom and Constraint Topology (FACT)—Part II: Practice,” Precision Engineering, 34(2): pp. 271-278.

Report Contributions

   2018

[2] Hopkins, J.B., one of 46 contributors, 2018, “Metamaterials Manufacturing: Pathway to Industrial Competitiveness,” Mforesight Alliance for Manufacturing Foresight, Primary authors: Bishop-Moser, J., Spadaccini, C.M., and Andres, C.

   2012

[1] Hopkins, J.B., 2012, “Massively Parallel Multi-Axis Microreflector Array for High-Speed Directed Light-Field Projection,” (pp. 23-24) in the FY2011 Engineering Innovations, Research, and Technology Report, Edited by McNichols, D., Minichino, C., Lawrence Livermore National Security, LLC., Livermore, CA.

Published Conference Papers (Peer-reviewed)

   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)

   2019

 

[32] 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)

 

[31] 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

 

[30] 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

 

[29] 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

 

[28] 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

 

[27] 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

 

[26] 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

 

[25] 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

 

[24] 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

[23] 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​

[22] 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.

 

[21] 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.

 

[20] 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.

 

[19] 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.

 

[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

   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

 

[3] Hopkins, J.B., 2010, "Design of Flexure-based Motion Stages for Mechatronic Systems Via Freedom, Actuation and Constraint Topologies (FACT)," Ph.D. Thesis, Massachusetts Institute of Technology.

 

   2007

 

[2] Hopkins, J.B., 2007, "Design of Parallel Flexure Systems Via Freedom and Constraint Topologies (FACT)," Master's Thesis, Massachusetts Institute of Technology.

   2005

 

[1] Hopkins, J.B., 2005, "The Effect of Probe Tilt Angle on the Quality of Scanning Tunneling Microscope Measurements," Bachelor's Thesis, Massachusetts Institute of Technology.

 

 

 

 

 
 
 
 
 

Copyright © 2013 Flexible Research Group. All rights reserved.

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Last Updated 01/17/2019