Prof. Dr. Thomas Speck

Projekte in livMatS

• Demonstrator for soft autonomous machines ‐ soft robotic low energy gripper systems based on livMatS Materials with sensing capabilities
• Logic Self-Reporting Mechano-Adaptive Metamaterials
• Training and self-healing by interface snapping mechanisms
• Demonstrators

Doktorand*innen (Erstbetreuer)

• Stefan Conrad
• Max Jentzsch
• Peter Kappel
• Frederike Klimm
• Anna Westermeier
  

Postdoktorand*innen (Erstbetreuer)

• Dr. Falk Tauber
  

Publikationen in livMatS

• Smooth or with a Snap! Biomechanics of Trap Reopening in the Venus Flytrap (Dionaea muscipula)*
  Durak, G. M., Thierer, R., Sachse, R., Bischoff, M., Speck, T., Poppinga, S. (2022). Smooth or with a Snap! Biomechanics of Trap Reopening in the Venus Flytrap (Dionaea muscipula). Advanced Science, 2201362. doi: 10.1002/advs.202201362
• The Structural and Mechanical Basis for Passive-Hydraulic Pine Cone Actuation*
  Eger, C. J., Horstmann, M., Poppinga, S., Sachse, R., Thierer, R., Nestle, N., Bruchmann, B., Speck, T., Bischoff, M., & Rühe, J. (2022). The Structural and Mechanical Basis for Passive‐Hydraulic Pine Cone Actuation. Advanced Science, 2200458. doi: 10.1002/advs.202200458
• Functional Anatomy, Impact Behavior and Energy Dissipation of the Peel of Citrus × limon: A Comparison of Citrus × limon and Citrus maxima*
  Jentzsch, M., Becker, S., Thielen, M., & Speck, T. (2022). Functional Anatomy, Impact Behavior and Energy Dissipation of the Peel of Citrus × limon: A Comparison of Citrus × limon and Citrus maxima. Plants, 11 (7): 991. doi: 10.3390/plants11070991 [Special Issue "Functional Plant Anatomy – Structure, Function and Environment"]
• The effects of substrate porosity, mechanical substrate properties and loading conditions on the attachment performance of the Mediterranean medicinal leech (Hirudo verbana)*
  Kampowski, T., Schuler, B., Speck, T., & Poppinga, S. (2022). The effects of substrate porosity, mechanical substrate properties and loading conditions on the attachment performance of the Mediterranean medicinal leech (Hirudo verbana). Journal of the Royal Society Interface, 19 (188), 20220068. doi: 10.1098/rsif.2022.0068
• Biomechanics of the parasite–host interaction of the European mistletoe*
  Mylo, M. D., Hoffmann, M., Balle, F., Beisel, S., Speck, T., & Speck, O. (2022). Biomechanics of the parasite–host interaction of the European mistletoe. Journal of Experimental Botany, 73(4): 1204 – 1221. doi: 10.1093/jxb/erab518 (Special issue “Mechanical Ecology - Taking Biomechanics to the Field”)
• Acclimation to wind loads and/or contact stimuli? A biomechanical study of peltate leaves of Pilea peperomioides*
  Langer, M., Hegge, E., Speck, T., & Speck, O. (2022). Acclimation to wind loads and/or contact stimuli? A biomechanical study of peltate leaves of Pilea peperomioides. Journal of Experimental Botany, 73(4): 1236 – 1252. doi: 10.1093/jxb/erab541 (Special issue “Mechanical Ecology - Taking Biomechanics to the Field”)
• Polarity in cuticular ridge development and insect attachment on leaf surfaces of Schismatoglottis calyptrata (Araceae)*
  Surapaneni, V. A., Aust, T., Speck, T., & Thielen, M. (2021). Polarity in cuticular ridge development and insect attachment on leaf surfaces of Schismatoglottis calyptrata (Araceae). Beilstein Journal of Nanotechnology, 12: 1326–1338. doi: 10.3762/bjnano.12.98
• Twist-to-Bend Ratios and Safety Factors of Petioles Having Various Geometries, Sizes and Shapes*
  Langer, M., Kelbel, M. C., Speck, T., Müller, C., & Speck, O. (2021) Twist-to-bend ratios and safety factors of petioles having various geometries, sizes and shapes. Frontiers in Plant Science, 2586. doi: 10.3389/fpls.2021.765605
• Influence of structural reinforcements on the twist-to-bend ratio of plant axes: a case study on Carex pendula*
  Wolff-Vorbeck, S., Speck, O., Speck, T., & Dondl, P. W. (2021). Influence of structural reinforcements on the twist-to-bend ratio of plant axes: a case study on Carex pendula. Scientific Reports, 11(1), 1-14. doi: 10.1038/s41598-021-00569-z
• Morphology and Anatomy of Branch–Branch Junctions in Opuntia ficus-indica and Cylindropuntia bigelovii: A Comparative Study Supported by Mechanical Tissue Quantification*
  Mylo, M. D., Hesse, L., Masselter, T., Leupold, J., Drozella, K., Speck, T., & Speck, O. (2021). Morphology and Anatomy of Branch–Branch Junctions in Opuntia ficus-indica and Cylindropuntia bigelovii: A Comparative Study Supported by Mechanical Tissue Quantification. Plants, 10(11), 2313. doi: 10.3390/plants10112313
• Biomechanics of tendrils and adhesive pads of the climbing passionflower Passiflora discophora*
  Klimm, F., Schmier, S., Bohn, H. F., Kleiser, S., Thielen, M., & Speck, T. (2021). Biomechanics of tendrils and adhesive pads of the climbing passionflower Passiflora discophora. Journal of Experimental Botany, 73(2): 1190 – 1203. doi: 10.1093/jxb/erab456
• Bridging the Gap: From Biomechanics and Functional Morphology of Plants to Biomimetic Developments*
  Speck, O., & Speck, T. (2021). Bridging the Gap: From Biomechanics and Functional Morphology of Plants to Biomimetic Developments. Biomimetics. doi: 10.3390/biomimetics6040060
• Structural gradients and anisotropic hydraulic conductivity in the enigmatic eel traps of carnivorous corkscrew plants (Genlisea spp.)*
  Carmesin, C. F., Fleischmann, A. S., Klepsch, M. M., Westermeier, A. S., Speck, T., Jansen, S., & Poppinga, S. (2021). Structural gradients and anisotropic hydraulic conductivity in the enigmatic eel traps of carnivorous corkscrew plants (Genlisea spp.). American Journal of Botany. doi: 10.1002/ajb2.1779
• Bio-inspired life-like motile materials systems: Changing the boundaries between living and technical systems in the Anthropocene*
  Speck, T., Poppinga, S., Speck, O., & Tauber, F. (2021). Bio-inspired life-like motile materials systems: Changing the boundaries between living and technical systems in the Anthropocene. The Anthropocene Review, 20530196211039275. doi: 10.1177/20530196211039275
• Advances on the Visualization of the Internal Structures of the European Mistletoe: 3D Reconstruction Using Microtomography*
  Mylo, M. D., Hofmann, M., Delp, A., Scholz, R., Walther, F., Speck, T., & Speck, O. (2021). Advances on the visualization of the internal structures of the European mistletoe: 3D reconstruction using microtomography. Frontiers in Plant Science, 2085. doi: 10.3389/fpls.2021.715711
• Biohybrid generators based on living plants and artificial leaves: influence of leaf motion and real wind outdoor energy harvesting
  Meder, F., Armiento, S., Naselli, G. A., Thielen, M., Speck, T., & Mazzolai, B. (2021). Biohybrid generators based on living plants and artificial leaves: influence of leaf motion and real wind outdoor energy harvesting. Bioinspiration & Biomimetics, 16(5), 055009. doi: 10.1088/1748-3190/ac1711
• Generation GrowBots: Materials, Mechanisms, and Biomimetic Design for Growing Robots
  Mazzolai, B., Walker, I., Speck, T., eds. (2021). Generation GrowBots: Materials, Mechanisms, and Biomimetic Design for Growing Robots (137 pp.). Frontiers Media SA, Lausanne. doi: 10.3389/978-2-88971-185-7
• Tool changing 3D printer for rapid prototyping of advanced soft robotic elements*
  Conrad, S., Speck, T., & Tauber, F. (2021). Tool changing 3D printer for rapid prototyping of advanced soft robotic elements. Bioinspiration & Biomimetics. doi: 10.1088/1748-3190/ac095a
• Biomimetics and Education in Europe: Challenge, Opportunity and Variety*
  Speck, O., Speck, T. (2021): Biomimetics and Education in Europe: Challenge, Opportunity and Variety. Biomimetics, 6(3): 49; Special Issue "Biomimetic Process and Pedagogy". doi: 10.3390/biomimetics6030049
• Self-Actuated Paper and Wood Models: Low-Cost Handcrafted Biomimetic Compliant Systems for Research and Teaching*
  Poppinga, S., Schenck, P., Speck, O., Speck, T., Bruchmann, B., Masselter, T. (2021) Self-Actuated Paper and Wood Models: Low-Cost Handcrafted Biomimetic Compliant Systems for Research and Teaching. Biomimetics, 6(3):42. doi: 10.3390/biomimetics6030042
• Editorial: Generation Growbots: Materials, Mechanisms, and Biomimetic Design for Growing Robots
  Mazzolai, B., Walker, I., & Speck, T. (2021). Editorial: Generation GrowBots: Materials, Mechanisms, and Biomimetic Design for Growing Robots. Frontiers in Robotics and AI, 8: 711942. doi: 10.3389/frobt.2021.711942
• Tool changing 3D printer for rapid prototyping of advanced soft robotic elements*
  Conrad, S., Speck, T., & Tauber, F. (2021). Tool changing 3D printer for rapid prototyping of advanced soft robotic elements. Bioinspiration & Biomimetics. doi: 10.1088/1748-3190/ac095a
• 3D Reticulated Actuator Inspired by Plant Up-Righting Movement Through a Cortical Fiber Network*
  Masselter, T., Speck, O., & Speck, T.(2021). 3D Reticulated Actuator Inspired by Plant Up-Righting Movement Through a Cortical Fiber Network. Biomimetics 6(2). doi: 10.3390/biomimetics6020033
• Functional morphology of plants – a key to biomimetic applications*
  Speck, O., & Speck, T. (2021). Functional morphology of plants–a key to biomimetic applications. New Phytologist. doi: 10.1111/nph.17396
• Bio‐Inspired Motion Mechanisms: Computational Design and Material Programming of Self‐Adjusting 4D‐Printed Wearable Systems*
  Cheng, T., Tahouni, Y., Wood, D., Thielen, M., Poppinga, S., Buchholz, L., Steinberg, T., Menges, A. & Speck, T. (2021): Bio-inspired Motion Mechanisms: Computational Design and 4D-printing of Self-adjusting Wearable Systems. Advanced Science: 2100411. doi: 10.1002/advs.202100411
• Petiole-Lamina Transition Zone: A Functionally Crucial but Often Overlooked Leaf Trait*
  M. Langer, T. Speck, O. Speck (2021): Petiole-lamina transition zone: A functionally crucial but often overlooked leaf trait. Plants 10(4): 774. doi: 10.3390/plants10040774
• Biomimetic soft robotic peristaltic pumping system for coolant liquid transport*
  Tauber, F. J., Masselter, T., & Speck, T. Biomimetic Soft Robotic Peristaltic Pumping System for Coolant Liquid Transport. In Technologies for economic and functional lightweight design 2020 (p. 173). Springer-Vieweg. doi: 10.1007/978-3-662-62924-6_14
• Peak values of twist-to-bend ratio in triangular flower stalks of Carex pendula: a study on biomechanics and functional morphology*
  Speck, O., Steinhart, F., & Speck, T. (2020). Peak values of twist-to-bend ratio in triangular flower stalks of Carex pendula: a study on biomechanics and functional morphology. American Journal of Botany 107(11): 1–9. doi: 10.1002/ajb2.1558
• "Generation GrowBots: Materials, Mechanisms, and Biomimetic Design for Growing Robots"
  Mazzolai, B., Walker, I. & Speck, T. (eds.) (2020). Special Issue / Research Topic on "Generation GrowBots: Materials, Mechanisms, and Biomimetic Design for Growing Robots". Frontiers in Robotics, 7. doi: 10.3389/frobt.2020.00075
• Biomimetic and Biohybrid Systems
  Vouloutsi, V. , Mura, A., Tauber, F., Speck, T., Prescott, T.J., & Verschure, P.F.M.J. (eds.), Biomimetic and Biohybrid Systems. Living Machines 2020. Lecture Notes in Computer Science LNAI/LNCS 12413 (428 pp.). Springer International Publishing, Cham. (ISBN 978-3-030-64312-6)
• Multi-material 3D-printer for rapid prototyping of bioinspired soft robotic elements*
  Conrad, S., Speck, T., & Tauber, F. (2020). Multi-material 3D-printer for rapid prototyping of bioinspired soft robotic elements. In Biomimetic and Biohybrid Systems. Living Machines 2020, 46 – 54. Lecture Notes in Computer Science LNAI 12413. Springer International Publishing, Cham. doi: 10.1007/978-3-030-64313-3_6
• Biohybrid wind energy generators based on living plants*
  Meder, F., Thielen, M., Naselli, G.A., Taccola, S., Speck, T., & Mazzolai, B. (2020). Biohybrid wind energy generators based on living plants. In Biomimetic and Biohybrid Systems. Living Machines 2020, 234 – 244. Lecture Notes in Computer Science LNAI 12413. Springer International Publishing, Cham. doi: 10.1007/978-3-030-64313-3_23
• Searching and Intertwining: Climbing Plants and GrowBots*
  Gallentine, J., Wooten, M. B., Thielen, M., Walker, I. D., Speck, T., & Niklas, K. (2020). Searching and Intertwining: Climbing Plants and GrowBots. Front. Robot. AI 7: 118. doi: 10.3389/frobt.
• Fracture mechanics of the endocarp of Cocos nucifera*
  Schmier, S., Jentzsch, M., Speck, T., & Thielen, M. (2020). Fracture mechanics of the endocarp of Cocos nucifera. Materials & Design, 195, 108944. doi: 10.1016/j.matdes.2020.108944
• Comparative analyses of the self-sealing mechanisms in leaves of Delosperma cooperi and Delosperma ecklonis (Aizoaceae)*
  Hesse, L., Kampowski, T., Leupold, J., Caliaro, S., Speck, T., & Speck, O. (2020). Comparative Analyses of the Self-Sealing Mechanisms in Leaves of Delosperma cooperi and Delosperma ecklonis (Aizoaceae). International journal of molecular sciences, 21(16), 5768. doi:10.3390/ijms21165768 (Special Issue: Plant Biomechanics)
• Bamboo-inspired tubular scaffolds with functional gradients*
  Yin, K., Mylo, M. D., Speck, T., & Wegst, U. G. (2020). Bamboo-inspired tubular scaffolds with functional gradients. Journal of the Mechanical Behavior of Biomedical Materials, 103826. doi: 10.1016/j.jmbbm.2020.103826
• Exploring the attachment of the Mediterranean medicinal leech Hirudo verbana to porous substrates*
  Kampowski, T., Thiemann, L. L., Kürner, L., Speck, T., & Poppinga, S. (2020). Exploring the attachment of the Mediterranean medicinal leech (Hirudo verbana) to porous substrates. Journal of the Royal Society Interface, 17(168), 20200300. doi: 10.1098/rsif.2020.0300
• Snapping mechanics of the Venus flytrap Dionaea muscipula*
  Sachse, R., Westermeier, A., Mylo, M. D., Nadasdi, J., Bischoff, M., Speck, T., & Poppinga, S. (2020). Snapping mechanics of the Venus flytrap (Dionaea muscipula). Proceedings of the National Academy of Sciences, 117(27), 16035-16042. doi: 10.1073/pnas.2002707117
• Plant movements as concept generators for the development of biomimetic compliant mechanisms*
  Poppinga, S., Correa, D., Bruchmann, B., Menges, A., & Speck, T. (2020). Plant movements as concept generators for the development of biomimetic compliant mechanisms. Integrative and Comparative Biology. doi: 10.1093/icb/icaa028
• 2D and 3D graphical datasets for bamboo-inspired tubular scaffolds with functional gradients: micrographs and tomograms*
  Yin, K., Mylo, M. D., Speck, T., & Wegst, U. G. (2020). 2D and 3D graphical datasets for bamboo-inspired tubular scaffolds with functional gradients: micrographs and tomograms. Data in Brief, 31, 105870. doi: 10.1016/j.dib.2020.105870
• Artificial Venus Flytraps: A Research Review and Outlook on Their Importance for Novel Bioinspired Materials Systems*
  Esser, F., Auth, P., & Speck, T. (2020). Artificial Venus flytraps: a research review and outlook on their importance for novel bioinspired materials systems. Frontiers in Robotics and AI, 7, 75. doi: 10.3389/frobt.2020.00075
• Self-repair in cacti branches: comparative analyses of their morphology, anatomy and biomechanics*
  Mylo, M. D., Krüger, F., Speck, T., & Speck, O.. (2020). Self-Repair in Cacti Branches: Comparative Analyses of Their Morphology, Anatomy, and Biomechanics. International journal of molecular sciences, 21(13), 4630. doi:10.3390/ijms21134630 (Special Issue: Plant Biomechanics)
• Bio-inspired Lightweight Construction
  Speck, T. (2020). In: Fratzl, P. , Jacobs, K. , Möller, M., Scheibel, T., & Sternberg, K. (eds.). Materials Research: Inspired by Nature - Innovation Potential of Biologically Inspired Materials, 37 – 38. acatech DISKUSSION, utzverlag, München.
• Living Plant‐Hybrid Generators for Multidirectional Wind Energy Conversion*
  Meder, F., Thielen, M., Mondini, A., Speck, T., & Mazzolai, B. (2020). Living Plant‐Hybrid Generators for Multidirectional Wind Energy Conversion. Energy Technology, 2000236., doi: 10.1002/ente.202000236
• The Protective Role of Bark and Bark Fibers of the Giant Sequoia (Sequoiadendron giganteum) during High-Energy Impacts
  Bold, G., Langer, M., Börnert, L., & Speck, T. (2020). The Protective Role of Bark and Bark Fibers of the Giant Sequoia (Sequoiadendron giganteum) during High-Energy Impacts. International Journal of Molecular Sciences, 21(9), 3355. doi:10.3390/ijms21093355
• 4D pine scale: biomimetic 4D printed autonomous scale and flap structures capable of multi-phase movement*
  Correa, D., Poppinga, S., Mylo, M. D., Westermeier, A. S., Bruchmann, B., Menges, A., & Speck, T. (2020). 4D pine scale: biomimetic 4D printed autonomous scale and flap structures capable of multi-phase movement. Philosophical Transactions of the Royal Society A, 378(2167), 20190445. doi: 10.1098/rsta.2019.0445
• Aus der Vergangenheit für die Zukunft lernen: Fossile Pflanzen als Ideengeber für biomimetische Materialien und Strukturen*
  Speck, T. & Masselter, T. (2020). In Phylogenie, Funktionsmorphologie und Bionik. Schriften zum 60. Phylogenetischen Symposium in Tübingen, 79 – 96. Scidinge Hall Verlag, Tübingen.
• Bioinspirierter Leichtbau*
  Speck, T. (2019). In Materialforschung: Impulsgeber Natur – Innovationspotenzial biologisch inspirierter Materialien und Werkstoffe, 37 – 38. acatech DISKUSSION, utzverlag, München.
• Wound reactions in stems of Leonurus cardiaca: A morphological, anatomical and biomechanical study
  Speck, O., Schmauder, K., Speck, T., & Paul-Victor, C. (2020). Wound reactions in stems of Leonurus cardiaca: a morphological, anatomical, and biomechanical study. Botany, 98(1), 81-89., doi: 10.1139/cjb-2019-0002
• Plant Biomechanics in the 21st Century – Special Issue Editorial
  Geitmann, A., Niklas, K., & Speck, T. (2019). Plant biomechanics in the 21st century.Journal of Experimental Botany, 70(14): 3435-3438, doi: 10.1093/jxb/erz280
• Structural and functional imaging of large and opaque plant specimen*
  Hesse, L., Bunk, K., Leupold, J., Speck, T., & Masselter, T. (2019). Structural and functional imaging of large and opaque plant specimens. Journal of experimental botany, 70(14), 3659-3678. doi: 10.1093/jxb/erz186
• Characterization of biomimetic peristaltic pumping system based on flexible silicone soft robotic actuators as an alternative for technical pumps
  Esser, F., Krüger, F., Masselter, T., & Speck, T. (2019, July). Characterization of Biomimetic Peristaltic Pumping System Based on Flexible Silicone Soft Robotic Actuators as an Alternative for Technical Pumps. In Conference on Biomimetic and Biohybrid Systems (pp. 101-113). Springer, Cham. doi: 10.1007/978-3-030-24741-6_9
• Adaptive biomimetic actuator systems reacting to various stimuli by and combining two biological snap-trap mechanics*
  Esser, F., Scherag, F. D., Poppinga, S., Westermeier, A., Mylo, M. D., Kampowski, T., Bold, G., Rühe, J., & Speck, T. (2019, July). Adaptive Biomimetic Actuator Systems Reacting to Various Stimuli by and Combining Two Biological Snap-Trap Mechanics. In Conference on Biomimetic and Biohybrid Systems (pp. 114-121). Springer, Cham. doi: 10.1007/978-3-030-24741-6_10
• Silent pumpers: a comparative topical overview of the peristaltic pumping principle in living nature, engineering and biomimetics
  Esser, F., Masselter, T., & Speck, T. (2019). Silent Pumpers: A Comparative Topical Overview of the Peristaltic Pumping Principle in Living Nature, Engineering, and Biomimetics. Advanced Intelligent Systems, 1(2), 1900009., doi: 10.1002/aisy.201900009
• Twist-to-bend ratio: an important selective factor for many rod-shaped biological structures*
  Wolff-Vorbeck, S., Langer, M., Speck, O., Speck, T., & Dondl, P. (2019). Twist-to-bend ratio: an important selective factor for many rod-shaped biological structures. Scientific reports, 9(1), 1-15. doi: 10.1038/s41598-019-52878-z
• Resolving form-structure-function relationships in plants with MRI for biomimetics transfer*
  Hesse, L., Leupold, J., Poppinga, S., Wick, M., Strobel, K., Masselter, T., & Speck, T. (2019). Resolving form–structure–function relationships in plants with MRI for biomimetic transfer. Integrative and Comparative Biology, 59(6), 1713-1726. doi: 10.1093/icb/icz051/54978
• Quo vadis plant biomechanics: Old wine in new bottles or an up-and-coming field of modern plant science?*
  Speck, T., & Speck, O. (2019). Quo vadis plant biomechanics: Old wine in new bottles or an up‐and‐coming field of modern plant science?. American Journal of Botany, 106(11), 1399-1403. doi: 10.1002/ajb2.1371.
• An Overview of Bioinspired and Biomimetic Self-Repairing Materials*
  Speck, O., Speck, T. (2019). An overview of bioinspired and biomimetic self-repairing materials. Biomimetics, 4(1), 26. doi: 10.33.90/biomimetics4010026
• Emergence in Biomimetic Materials Systems
  Speck, T., & Speck, O. (2019). Emergence in biomimetic materials systems. In Emergence and modularity in life sciences (pp. 97-115). Springer, Cham.
  
  
  * Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy – EXC-2193/1 – 390951807