Two-Photon Polymerized Shape Memory Microfibers: A New Mechanical Characterization Method in Liquid

Grayson Minnick; Bahareh Tajvidi Safa; Jordan RosenbohmNickolay V. LavrikJustin BrooksAmir M. EsfahaniAlberto SamaniegoFanben MengBenjamin RichterWei GaoRuiguo Yang

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Two-Photon Polymerized Shape Memory Microfibers: A New Mechanical Characterization Method in Liquid

机译：Two-Photon Polymerized Shape Memory Microfibers: A New Mechanical Characterization Method in Liquid

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Two-photon polymerization (TPP) is widely used to create 3D micro- andnanoscale scaffolds for biological and mechanobiological studies, which oftenrequire the mechanical characterization of the TPP fabricated structures. Tosatisfy physiological requirements, most of the mechanical characterizationsneed to be conducted in liquid. However, previous characterizations of TPP fabricatedstructures are all conducted in air due to the limitation of conventionalmicro- and nanoscale mechanical testing methods. In this study, a new experimentalmethod is reported for testing the mechanical properties of TPP-printedmicrofibers in liquid. The experiments show that the mechanical behaviors ofthe microfibers tested in liquid are significantly different from those tested inair. By controlling the TPP writing parameters, the mechanical properties ofthe microfibers can be tailored over a wide range to meet a variety of mechanobiologyapplications. In addition, it is found that, in water, the plasticlydeformed microfibers can return to their predeformed shape after tensile strainis released. The shape recovery time is dependent on the size of microfibers.The experimental method represents a significant advancement in mechanicaltesting of TPP fabricated structures and may help release the full potential ofTPP fabricated 3D tissue scaffolds for mechanobiological studies.

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《Advanced functional materials》 |2023年第3期|2206739.1-2206739.12|共12页
作者
Grayson Minnick; Bahareh Tajvidi Safa; Jordan RosenbohmNickolay V. LavrikJustin BrooksAmir M. EsfahaniAlberto SamaniegoFanben MengBenjamin RichterWei GaoRuiguo Yang;
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作者单位

Department of Mechanical and Materials EngineeringUniversity of Nebraska-LincolnLincoln, NE 68588, USA;

Center for Nanophase Materials SciencesOak Ridge National LaboratoryOak Ridge, TN 37831-6054, USA;

Department of Mechanical EngineeringUniversity of Texas at San AntonioSan Antonio, TX 78249, USANanoscribe GmbH & Co. KG76344 Eggenstein-Leopoldshafen, GermanyDepartment of Mechanical EngineeringUniversity of Texas at San AntonioSan Antonio, TX 78249, USA, J. Mike Walker 66 Department of Mechanical EngineeringTexas A&M UniversityCollege Station, TX 77843, USADepartment of Mechanical and Materials EngineeringUniversity of Nebraska-LincolnLincoln, NE 68588, USA, Nebraska Center for Materials and NanoscienceUniversity of Nebraska-LincolnLincoln, NE 68588, USA;

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正文语种英语
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IP-Visio; mechanical characterization; shape memory; tensile testing; two-photon polymerization;

Two-Photon Polymerized Shape Memory Microfibers: A New Mechanical Characterization Method in Liquid

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