Results 21 to 30 of about 8,141 (253)
Sacrificial bonds heal bone [PDF]
Nature, 2001 The toughness of bone is usually attributed to its collagen, but how does it work? New evidence shows that molecular bonds can temporarily sacrifice themselves to absorb impacts.
openaire +1 more source
Sacrificial Ionic Bonds Need To Be Randomly Distributed To Provide Shear Deformability [PDF]
Nano Letters, 2009 Multivalent ions are known to allow for reversible cross-linking in soft biological materials, providing stiffness and extensibility via sacrificial bonds. We present a simple model where stiff nanoscale elements carrying negative charges are coupled in shear by divalent mobile cations in aqueous media.
Hartmann, M., Fratzl, P.
openaire +3 more sources
Sacrificial Bonds and Hidden Length: Unraveling Molecular Mesostructures in Tough Materials [PDF]
Biophysical Journal, 2006 Sacrificial bonds and hidden length in structural molecules and composites have been found to greatly increase the fracture toughness of biomaterials by providing a reversible, molecular-scale energy-dissipation mechanism. This mechanism relies on the energy, of order 100 eV, needed to reduce entropy and increase enthalpy as molecular segments are ...
Fantner, Georg E. +10 more
openaire +3 more sources
Influence of sacrificial bonds on the mechanical behaviour of polymer chains [PDF]
Bioinspired, Biomimetic and Nanobiomaterials, 2014 A growing focus in modern materials science is the attempt to transfer principles found in nature into new technological concepts with the goal of producing novel materials with tailored mechanical properties. One of these principles used in nature is the concept of sacrificial bonding (i.e.
Nabavi, S. +3 more
openaire +2 more sources
Scientific Reports, 2021 We propose a new concept that utilizes the difference in Poisson's ratio between component materials as a strengthening mechanism that increases the effectiveness of the sacrificial bond toughening mechanism in macroscale double-network (Macro-DN ...
Tsuyoshi Okumura +4 more
doaj +1 more source
New Journal of Physics, 2014 Sacrificial bonding is a ubiquitous cross-linking strategy for increasing toughness that is found throughout nature in various biological materials such as bone, wood, silk and mussel byssal threads.
S Soran Nabavi +4 more
doaj +1 more source
Modular Design of Programmable Mechanofluorescent DNA Hydrogels
Nature Communications, 2019 Mechanosensitive materials typically lack complex response patterns due to difficult synthetic methods. Here, the authors introduce FRET-based DNA tension probes into macroscopic 3D DNA hydrogels to prepare mechanofluorescent materials with programmable ...
Remi Merindol +4 more
doaj +1 more source
Sacrificial wafer bonding for planarization after very deep etching [PDF]
Journal of Microelectromechanical Systems, 1995 A technique is presented that provides planarization after a very deep etching step in silicon. This offers the possibility for not only resist spinning and layer patterning but also for realization of bridges and cantilevers across deep grooves or holes.
Spiering, V.L. +3 more
openaire +1 more source
Travmatologiâ i Ortopediâ Rossii, 2011 The authors describe general conditions of fatique injuries (FI) initiation and development, and discuss the conformity between hierarchic skeletal organization levels and spatial differentiation of the initial FI types – local discrete and local ...
A. S. Avrunin +3 more
doaj +1 more source
Molecular Oncology, EarlyView.Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang +12 more
wiley +1 more source