1. Terahertz Protein Vibrations: The Usefulness of Coarse-Grained Numerical Models -- 2. Protein Conformational Changes and Low-Frequency Vibrational Modes: A Similarity Analysis -- 3. Keynote: Residual Stresses in Biological Materials -- 4. Quantification of Papillary Muscle Motion and Mitral Regurgitation after Myocardial Infarction -- 5. Characterization of Fiber Alignment and Mechanical Properties of Printed Cellulose Nanofibril Films -- 6. Vibrational Analysis of Biopolymer-Based Hydrogels Using 3D-Printed Test Structures for Applications In Bioprinting -- 7. High Strain Torsional Shear of Porcine Thoracic Aorta -- 8. Imaging of the Scattering of High-Intensity Focused Ultrasonic Waves at Artificial Bone Replicas -- 9. A Comparison Between Bearing and Non-Bearing Human Bone: Mechanical Testing and Micro-Architecture Assessment -- 10. 3D High-Speed Digital Image Correlation (3D-HSDIC) to Study Damage of Human Eardrum Under High-pressure Loading -- 11. Comparative Modal Analysis of the Tympanic Membrane Mechanics between Normal and Experimentally Simulated Pathological Ears -- 12. Influence of Cell Wall Polysaccharides on Structure and Mechanics of Streptococcus Mutans -- 13. Dental Implant Texture Affects Biofilm Adhesion Strength -- 14. On the Role of Human Umbilical Cord Biomechanics -- 15. Laser Diffractometer for Measuring Bacterial Biodegradation of Dental Materials.

Mechanics of Biological Systems and Materials & Micro-and Nanomechanics, Volume 4 of the Proceedings of the 2019 SEM Annual Conference & Exposition on Experimental and Applied Mechanics, the fourth volume of six from the Conference, brings together contributions to important areas of research and engineering. The collection presents early findings and case studies on a wide range of topics, including: Extreme Nanomechanics In-Situ Nanomechanics Expanding Boundaries in Metrology Micro and Nanoscale Deformation MEMS for Actuation, Sensing and Characterization 1D & 2D Materials Cardiac Mechanics Cell Mechanics Biofilms and Microbe Mechanics Traumatic Brain Injury Orthopedic Biomechanics Ligaments and Soft Materials.