Simple shearing of soft biomaterials

2011 ◽  
pp. 427-432
Author(s):  
C Horgan ◽  
J Murphy
Keyword(s):  
Simple Shearing ◽  
Soft Biomaterials

scholarly journals Author Correction: Assessment of nanoindentation in stiffness measurement of soft biomaterials: kidney, liver, spleen and uterus

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Guanlin Wu ◽  
Michael Gotthardt ◽  
Maik Gollasch
Keyword(s):  
Stiffness Measurement ◽  
Kidney Liver ◽  
Soft Biomaterials

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

scholarly journals Dominant negative Poynting effect in simple shearing of soft tissues

2014 ◽  
Vol 95 (1) ◽  
pp. 87-98 ◽  
Author(s):  
M. Destrade ◽  
C. O. Horgan ◽  
J. G. Murphy
Keyword(s):  
Soft Tissues ◽  
Dominant Negative ◽  
Simple Shearing ◽  
Poynting Effect

scholarly journals Polylactide-Based Soft Biomaterials

Kobunshi ◽  
2004 ◽  
Vol 53 (11) ◽  
pp. 881-885
Author(s):  
Tatsuro OUCHI ◽  
Hidetoshi ARIMURA
Keyword(s):  
Soft Biomaterials

scholarly journals The quest for mechanically and biologically functional soft biomaterials via soft network composites

2018 ◽  
Vol 132 ◽  
pp. 214-234 ◽  
Author(s):  
Onur Bas ◽  
Isabelle Catelas ◽  
Elena M. De-Juan-Pardo ◽  
Dietmar W. Hutmacher
Keyword(s):  
Soft Biomaterials

scholarly journals Self-assembly of nucleopeptides to interact with DNAs

2017 ◽  
Vol 7 (6) ◽  
pp. 20160116 ◽  
Author(s):  
Xuewen Du ◽  
Jie Zhou ◽  
Xinming Li ◽  
Bing Xu
Keyword(s):  
Hydrogen Bonds ◽  
Plasmid Dna ◽  
Self Assembly ◽  
Unique Property ◽  
The Self ◽  
Proteinase K ◽  
Rational Approach ◽  
Proteolytic Resistance ◽  
Soft Biomaterials

As a novel class of biomaterials, nucleopeptides, via the conjugation of nucleobases and peptides, usually self-assemble to form nanofibres driven mainly by hydrogen bonds. Containing nucleobase(s), nucleopeptides have a unique property—interacting with nucleic acids. Here we report the design and characterization of nucleopeptides that self-assemble in water and are able to interact with single-stranded DNAs (ssDNAs). Containing nucleobases on their side chains, these nucleopeptides bind with the ssDNAs, and the ssDNAs reciprocally affect the self-assembly of nucleopeptides. In addition, the interactions between nucleopeptides and ssDNAs also decrease their proteolytic resistance against proteinase K, which further demonstrates the binding with ssDNAs. The nucleopeptides also interact with plasmid DNA and deliver hairpin DNA into cells. This work illustrates a new and rational approach to create soft biomaterials by the integration of nucleobases and peptides to bind with DNA, which may lead to the development of nucleopeptides for controlling DNA in cells.

scholarly journals Progress in material design for biomedical applications

2015 ◽  
Vol 112 (47) ◽  
pp. 14444-14451 ◽  
Author(s):  
Mark W. Tibbitt ◽  
Christopher B. Rodell ◽  
Jason A. Burdick ◽  
Kristi S. Anseth
Keyword(s):  
Biomedical Applications ◽  
Material Design ◽  
The Body ◽  
Biological Complexity ◽  
Recent Developments ◽  
Primary Focus ◽  
Controlled Structure ◽  
High Level ◽  
Soft Biomaterials ◽  
Organ Replacement

Biomaterials that interface with biological systems are used to deliver drugs safely and efficiently; to prevent, detect, and treat disease; to assist the body as it heals; and to engineer functional tissues outside of the body for organ replacement. The field has evolved beyond selecting materials that were originally designed for other applications with a primary focus on properties that enabled restoration of function and mitigation of acute pathology. Biomaterials are now designed rationally with controlled structure and dynamic functionality to integrate with biological complexity and perform tailored, high-level functions in the body. The transition has been from permissive to promoting biomaterials that are no longer bioinert but bioactive. This perspective surveys recent developments in the field of polymeric and soft biomaterials with a specific emphasis on advances in nano- to macroscale control, static to dynamic functionality, and biocomplex materials.

Shear Stability, Instability and Localization of Materials Exhibiting Thermal Softening, Strain Rate Sensitivity and Strain Hardening

1989 ◽  
Vol 111 (4) ◽  
pp. 250-253 ◽  
Author(s):  
N. Charalambakis
Keyword(s):  
Test Problem ◽  
Shear Banding ◽  
Homogeneous Solution ◽  
Rate Sensitivity ◽  
Thermal Softening ◽  
Simple Shearing ◽  
Shear Forces ◽  
Localization Of Plastic Deformation ◽  
Dependent Flow

We consider the test-problem of simple shearing of a thermoviscoplastic solid subject to steady or time-dependent boundary velocities or shear forces. Previously derived stability and nonlocalization criteria are presented. The influence of boundary conditions on the time-asymptotic “solution,” the role of nonuniformities and the localization of plastic deformation are discussed. Finally, a perturbation analysis of homogeneous solution under steady boundary velocities or stresses of a material with a gradient-dependent flow stress is presented and “shear-banding” criteria are derived.

A Modular Test Platform for Micromechanical Tensile Testing of Soft Biomaterials

2018 ◽  
Author(s):  
Wilson Eng ◽  
Max Kim ◽  
Anand Ramasubramanian ◽  
Sang-Joon John Lee
Keyword(s):  
Force Measurement ◽  
Low Noise ◽  
Particle Tracing ◽  
Viscoelastic Parameters ◽  
Tensile Tester ◽  
Low Profile ◽  
Blood Clots ◽  
Microscope Imaging ◽  
Using Data ◽  
Soft Biomaterials

Mechanical properties of biomaterials are difficult to characterize experimentally because many relevant biomaterials such as hydrogels are very pliable and viscoelastic. Furthermore, test specimens such as blood clots retrieved from patients tend to be small in size, requiring fine positioning and sensitive force measurement. Mechanobiological studies require fast data recording, preferably under simultaneous microscope imaging, in order to monitor events such as structural remodeling or localized rupture while strain is being applied. A low-profile tensile tester that applies prescribed displacement up to several millimeters and measures forces with resolution on the order of micronewtons has been designed and tested, using alginate as a representative soft biomaterial. 1.5% alginate (cross-linked with 0.1 M and 0.2 M calcium chloride) has been chosen as a reference material because of its extensive use in tissue engineering and other biomedical applications. Prescribed displacement control with rates between 20 μm/s and 60 μm/s were applied using a commercial low-noise nanopositioner. Force data were recorded using data acquisition and signal conditioning hardware with sampling rates as high as 1 kHz. Elongation up to approximately 10 mm and force in the range of 250 mN were measured. The data were used to extract elastic and viscoelastic parameters for alginate specimens. Another biomaterial, 2% agarose, was also tested to show versatility of the apparatus for slightly stiffer materials. The apparatus is modular such that different load cells ranging in capacity from hundreds of millinewtons to tens of newtons can be used. The apparatus furthermore is compatible with real-time microscope imaging, particle tracing, and programmable positioning sequences.

Sign in / Sign up

Export Citation Format

Share Document