Nima Tolou

Assistant Professor

Nima Tolou focuses on design of high-performance micro/meso compliant mechanisms for MEMS and motion-driven energy harvesters with strong orientation towards industry. He received his PhD in 2012 from the department of Biomechanical Engineering at Delft University of Technology. Since then, he was an Intra-European Fellow at the Optical and Semiconductor Group, Imperial College London, and works currently as Assistant Professor at the Department of Precision and Microsystems Engineering at Delft University of Technology.

His research has led to several research papers and a number of patents and patent applications as well as national and international awards. Among others, he was listed among the top six inventors for the Delft Innovation Award 2011 and received a prestigious FP7-IEF personal grant on Energy Harvesters from the European Commission. Since 2010, Nima has been co-organizing international workshops in Montreal, Delft, Chicago, Berlin, and Vienna, and international symposia including CoMe2012 at Delft and Compliant Mechanisms Fast Forward and Interactive Session in Buffalo, NY and Boston, MA. Nima has been representing Delft University of Technology at MEMS and precision engineering exhibitions. He is a member of the technical committee of MEMS and Nanotechnology of the IEEE IES and serves as the Executive Editor of the journal Mechanical Sciences.

Profile

Research:         

  • Innovative design of mechanisms for MEMS and energy harvesters for medical and industrial applications;
  • This includes sketch concepts,nonlinear static and dynamic analysis as well as novelty in fabrication techniques for implementation into real life applications.

Teaching:          

  • ME1160 Compliant Mechanisms.
Academic Curriculum
  • Assistant Professor
    Since Sep.2014               Department of Precision and Microsystems Engineering, Delft University of Technology, NL
    Mechatronic System Design Group
    Design of  Novel Micro/Meso Mechanisms for MEMS and Energy Harvesters
  • Guest Researcher
    Since Dec.2014               Department of Electrical and Electronic Engineering, Imperial College London, UK
    Optical and Semiconductor Devices Group
    Kinetic Energy Harvesters and Micro Fabrication
  • Marie Curie Fellow
    Aug. 2013-Sep.2014        Department of Electrical and Electronic Engineering, Imperial College London, UK
    (Prof. A. Holmes, Optical and Semiconductor Devices Group)
    High-Performance Kinetic Energy Harvesters
  • PostDoc
    July. 2012-Aug.2013       Department of Precision and Microsystems Engineering, Delft University of Technology, NL
     (Prof. J. Herder, Mechatronic System Design Group)
    Design of  Novel Micro/Meso Mechanisms for an International High Precision Company
  • PhD
    Sep.2008-Jul.2012       Department of Biomechanical Engineering, Delft University of Technology, NL
    (Prof. J. Herder, Interactive Mechanism Research)
    Statically Balanced Compliant Mechanisms for MEMS and Precision Engineering         
  • Visiting Scholar 
    Sep.2010-Feb.2011       Brigham Young University, Department of Mechanical Engineering, Brigham Young University, USA
    (Prof. L. Howell, Compliant Mechanism Research)
             
  • Visiting Researcher
    Apr.2010-May.2010       Becknell University, Department of Mechanical Engineering, Becknell University, USA
    (Dr. C. Kim, Compliant Mechanism Research)
Selected Grants and Awards
  • Present              PI: Industrial project on Design of Micro Mechanisms, together with Just L. Herder  and Oleg Guziy, multi-national;
  • 2012                 PI: Marie Curie FP7-IEF personal grant, scored 94 out of 100, 138K €, EU;
  • 2012                 Co-PI: Valorization grant (STW-VG2) on Kinetic Energy Harvesters, together with Oleg Guziy and Just Herder, Ranked 1st, 200K €, NL;
  • 2012                 Co-PI: NWO grant for Open Access Journals, together with Just L. Herder, 43K €, NL;
  • 2012                 ASME 2012 Mechanism Design Competition, finalist, Chicago, USA;
  • 2011                 Listed among top 6 inventors, Delft University of technology, NL;
  • 2011                 Dutch National Winner of the European Society for Precision Engineering Challenge, UK;
Conference and Workshop Organization
  • Aug.2015           ASME IDETC 2014, is serving as the Program Chair of  MR6 Compliant Mechanisms and Micro/Nano Mechanisms, Boston, USA;
  • Aug.2014           ASME IDETC 2014, served as the Program Co-Chairof  MR5 Compliant Mechanisms and Micro/Nano Mechanisms and Chairof the MR-5-3 Compliant Mechanisms Fast Forward and Interactive II and Awards, Buffalo, USA;
  • Nov.2013           39th Annual Conference of the IEEE Industrial Electronics Society, 4 hours Tutorial on Energy Harvesting  from Motion: Fundamentals and Recent Advances, together with A. Holmes and R.B. Mrad, AU;
  • Jun.2013            13th International Conference of the European Society for Precision Engineering and Nanotechnology,  4 hour Tutorial on Precision Flexures: Synthesis and Stiffness Design, together with J. Hopkins, DE.
  • Aug.2012           ASME IDETC, instructor in a 4 hour workshop on Design for Prescribed Stiffness, together with J.L. Herder,  S. Awtar and D. Brower, Chicago, USA;
  • May.2011        IFToMM/ASME Second International Symposium on Compliant Mechanisms (CoMe2011), served as Program Co-Chair, together with J. Herder, J. Gallego and C. Kim, Delft, NL;
  • Aug.2010           ASME IDETC, instructor in a 4 hour Tutorial on Static Balancing of Linkages and Compliant Mechanisms, together with Just Herder and Juan Gallego, Montreal, Canada.
Editorial, Committee and Review Activities
  • 2013-Present       IEEE Technical Committee on MEMS and Nanotechnology
  • 2010-Present       Executive Editor of the journal Mechanical Sciences;
  • May. 2011         Guest Editor of Special Issue: Future Directions in Compliant Mechanisms;
  • Nov.2010           Guest Editor of Special Issue: Recent Advances in Nonlinear Sciences;
  • 2008-present       Reviewer of 25 journals most of which of 0.8<IF<2.

 Outreach Activities   

  • Jun.2014            TUDelft Representative at at European society for Precision Engineering Exhibition, HR;
  • Apr.2014           TUDelft Representative at Precision Engineering Exhibition at Hannover, DE;
  • Oct.2011-2013    TUDelft Open Day representative,  NL;
  • Sep.2012           TUDelft Representative at Precision Engineering Exhibition, NL;
  • Jun.2011            TUDelft Representative at European society for Precision Engineering Exhibition, SE;
  • May.2010          TUDelft Representative at European society for precision engineering exhibition, IT.
Publications

Patents and patent applications (selected)

  • Tolou N., Herder J.L., SB-MEMS, NL2005181, WO2012/015301, 2010;

  • Tolou N., Herder J.L., SB-Kinetic Energy Harvester, N2007609, 2011;

  • Tolou N., Lassooij J., Herder J.L., Bi-stable compliant grasper, NL 2009200, 2012;

  • Tolou N., Lassooij J., Herder J.L., Statically Balanced compliant grasper, NL2009201, 2012;

  • Tolou N., Pluimers P.J., Jensen B.D., Howell L.L., Herder J.L., A near-zero-stiffness compliant mechanism with high orthogonal stiffness and a ON/OFF preloading connection mechanism, NL2009312, 2012.

Contributions to book

  • Entries to “Part Four: Library of Compliant Mechanisms,” in Handbook of Compliant Mechanisms, Edited by L.L. Howell, S.P. Magleby, and B.M. Olsen, John Wiley & Sons, 2012.

Journals (selected)

  •  Farhadi, D., Tolou N., Herder J.L., A Review on Compliant Joints And Rigid-Body Constant Velocity Universal Joints Towards the Design Of Compliant Homokinetic Couplings, J. Mech. Des.. 2014; MD-13-1596, doi: 10.1115/1.4029318.

  • Tolou N., Khiat A., Zhang G.Q., Herder J.L., Analytical Method For Determination Of   Young’s Modulus Of Large Deflection Carbon Nanotube, International Journal of Nonlinear Sciences and Numerical Simulation, 12(1-8) 51-58, DOI 10.1515/IJNSNS.2011.300;

  • Pellegrini S.P., Tolou N., Schenk M., Herder J.L., Bistable Vibration Energy Harvesters: a review, The Journal of Intelligent Materials Systems and Structures, In press, DOI: 10.1177/1045389X12444940, 2012;

  • Tolou N., Smit G., Nikooyan A.A., Plettenburg D.H., Herder J.L., Stiffness Compensation Mechanism for Body Powered Hand Prostheses with Cosmetic Covering, Journal of Medical Devices, 2012, 6(1) 011004;

  • Dunning A.G., Tolou N., Pluimers P.J., Kluit L., Herder J.L., Short communication on bi-stable compliant mechanisms: correction for finite element modeling, preloading incorporation and tuning the stiffness, Mechanical design, In press, 2012, DOI: 10.1115/1.4006961;

  •  Tolou N., Kimiaeifar A., Herder J.L., Partially Compliant Bi-stable Mechanism: Adjustability of Stiffness and Large Deflection Solution, Mechanical design, In press, 2012;

  • Dunning G.A., Tolou N., Herder J.L., Inventory of platforms towards the design of a statically balanced six degrees of freedom compliant precision stage, Mech. Sci., 2, 157-168, doi:10.5194/ms-2-157-2011;

  • Simi M., Tolou N., Valdastri P., Herder J.L.,  Menciassi A., Dario P., Modeling of a compliant joint in a Magnetic Levitation System for an endoscopic camera, Mechanical Sciences, 3(1), 5-14, 2012.

  • Tolou N., Gallego J.A., Herder J.L., Statically Balanced Compliant Micro Mechanisms (SB-MEMS): A Breakthrough in Precision Engineering, Mikroniek, 2010, 50 (6): 20-25;

  • Tolou N., Herder J.L., A semi analytical approach to large deflections in compliant beams under point load. Journal of Mathematical Problems in Engineering, Volumn 2009, art. no. 910896, DOI: 10.1155/2009/910896;

  • Dunning G.A., Tolou N., Herder J.L., A Compact Low-Stiffness Six Degrees of Freedom Compliant Precision Stage, Precision Engineering, 37(2): 380–388;

  • Tolou N., Khatami I., Jafari B., Ganji D.D., Analytical Solution of Nonlinear Vibrating Systems, American journal of applied Sciences, 5 (9): 1219-1224, 2008;

  • Kimiaeifar A., Tolou N., Barari A., Herder J.L., Large Deflection Analysis Of Cantilever Beam Under End Point And Distributed Load, JCIE, In press;

  • Tolou N., Khatami I., Mahmoudi J., Barari A., Ganji D.D., On the Non-Linear Deformation of Elastic Beams in an Analytic Solution, Asian Journal of Scientific Research, 1(4): 437-443, 2008;

  • Khatami I., Pashaei M.H., Tolou N., Comparative Vibration Analysis of a Parametrically Nonlinear Excited Oscillator Using HPM and Numerical Method. Journal of Mathematical Problems in Engineering. Volume 2008, Article ID 956170, doi:10.1155/2008/956170;

Refereed Conferences (selected)

  • D'Auria M., Tolou N., UV-Laser Cutting for Silicon MEMS Prototyping: Improving Etching Rate and Quality, Proceedings of the 14th euspen International Conference, Dubrovnik, June 2014;

  • Tolou N., Pluimers P.J., Jensen B.D., Magleby S., Howell L.L., Herder J.L., Near-Zero-Stiffness Linear Motion Stage with High Orthogonal and Out-of-plane Stiffness, DSPE 2012, Sep 2012, Deurne, The Netherlands.

  • Tolou N., Pluimers P.J., Jensen B.D., Magleby S., Howell L.L., Herder J.L., Carbon-Nanotube-Based Constant Force Mechanisms, DSPE 2012, Sep 2012, Deurne, The Netherlands.

  • Dunning A.G., Tolou N., Herder J.L., A Load Carrying Stage with Low Stiffness in Six Degrees of Freedom, DSPE 2012, Sep 2012, Deurnem, The Netherlands.

  • Pluimers P.J., Tolou N., Jensen B.D., Howell L.L., Herder J.L., A Compliant On/Off Connection Mechanism for Preloading Statically Balanced Compliant Mechanisms, DETC2012-71509, ASME IDETC 2012, Chicago, USA;

  • Dunning A.G., Tolou N., Herder J.L., A novel constant force compliant precision stage to balance a load in six degrees of freedom, OS. 7.3, euspen 2012, Stockholm, Sweden;

  • Tolou N., Pluimers P.J., Jensen B.D., Magleby S., Howell L.L., Herder J.L., Constant Force Micro Mechanism out of Carbon Nanotube Forest , P7.03, euspen 2012, Stockholm, Sweden;

  • Farhadi D., Tolou N., Herder J.L., The Scope For A Compliant Homokinetic Coupling Based On Review Of Compliant Joints And Rigid-Body Constant Velocity Universal Joints, DETC2012-71514, ASME IDETC 2012, Chicago, USA;

  • Kluit L., Tolou N., Tiemens D., Herder J.L., Stiffness Softening in Body Powered Hand Prosthesis, DMD2012-6969, ASME DMD 2012, Minneapolis, MN, USA;

  • Tolou N., Estevez P., Herder J.L., Collinear-Type Statically Balanced Compliant Micro Mechanism (SB-CMM): Experimental Comparison Between Pre-curved And Straight Beams. DETC2011-47678, ASME IDETC 2011, Aug 28-31, Washington, DC, USA;

  • Tolou N., Estevez P., Herder J.L., Energy efficient MEMS Using Collinear-Type Statically Balanced Compliant Micro Mechanisms (SB-MEMS), In proceeding of the 11th euspen International Conference– May 2011– Como, Italy;

  • Dunning A.G., Tolou N., Herder J.L., Inventory of platforms towards the design of a statically balanceD six degrees of freedom compliant precision stage, In proceeding of the Second International Symposium on Compliant Mechanisms CoMe2011, May 19-20th Delft, The Netherlands;

  • Kluit L., Tolou N., Tiemens D., Herder J.L., Fully Compliant Tuneable Stiffness Compensation Mechanism for Body Powered Hand Prosthesis, In proceeding of the Second International Symposium on Compliant Mechanisms CoMe2011, May 19-20th Delft, The Netherlands;

  • Zhi S., Tolou N., Guziy O., Patil S.A., Garza  Vales M., Hartmann D., Herder J.L., Market Driven Applications for Statically Balanced Compliant Mechanisms Technology, In proceeding of the Second International Symposium on Compliant Mechanisms CoMe2011, May 19-20th Delft, The Netherlands;

  • Lassooij J., Tolou N., Caccavaro S., Tortora G., Menciassi A., Herder J.L, Laparoscopic 2DOF Robotic Arm with Statically Balanced Fully Compliant End Effector, In proceeding of the Second International Symposium on Compliant Mechanisms CoMe2011, May 19-20th Delft, The Netherlands;

  • Simi M., Tolou N., Valdastri P., Herder J.L.,  Menciassi A., Dario P., Modelling of a Compliant Joint in a Magnetic Levitation System for an Endoscopic Camera, In proceeding of the Second International Symposium on Compliant Mechanisms CoMe2011, May 19-20th Delft, The Netherlands;

  • Kluit L., Tolou N., Herder J.L., Design of a Tunable fully Compliant Stiffness Compensation Mechanism for Body Powered Hand Prosthesis, In proceeding of the Second International Symposium on Compliant Mechanisms CoMe2011, May 19-20th Delft, The Netherlands;

  • Tolou N., Henneken V.A., Herder J.L., Statically Balanced Compliant Micro Mechanisms (SB-MEMS): Concepts And Simulation, In proceeding of ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Paper number DETC2009-3888, August 15 - 18, 2010, Montreal, Quebec, Canada;

  • Tolou N., Smit G., Nikooyan A.A., Plettenburg D.H., Herder J.L., Stiffness Compensation in Hand Prostheses with Cosmetic Coverings Using Statically Balanced Mechanisms. In proceeding of ASME 2010 Design of Medical Devices (DMD) Conference, Paper number DETC2009-3888. Abstract: in Journal of Medical Devices, 4(2) 027527, doi:10.1115/1.3443321, Apr 13-15, Minneapolis, MN, USA;

  • Morsch F., Tolou N., Herder J.L., Comparison of Methods For Large Deflection Analysis Of A Cantilever Beam Under Free End Point Load Case, In proceeding of ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Paper number DETC2009-86754, Aug 30- Sep 2, San Diego, CA, USA;

  • Tolou N., Herder J.L., Concept and Modeling of A Statically Balanced Compliant Laparoscopic Grasper. In proceeding of ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Paper number DETC2009-86694, Aug 30- Sep 2, San Diego, CA, USA;

  •  Tolou N., Smit G., Nikooyan A.A., Plettenburg D.H., Herder J.L., Stiffness Compensation in Hand Prostheses with Cosmetic Coverings Using Statically Balanced Mechanisms. In proceeding of ASME 2010 Design of Medical Devices (DMD) Conference, Paper number DETC2009-3888, Apr 13-15, Minneapolis, MN, USA.

Tolou, N. (Nima)