Results 21 to 30 of about 43,349 (285)

Stiction of surface micromachined structures after rinsing and drying: model and investigation of adhesion mechanisms [PDF]

open access: yes, 1994
The mechanisms causing stiction of polysilicon structures fabricated by surface micromachining techniques have been investigated. It is found that during drying from rinse liquids attractive dynamic capillary forces are responsible for bringing ...
Elders, Job   +3 more
core   +3 more sources

Recent progress towards the electrosynthesis of ammonia from sustainable resources [PDF]

open access: yes, 2017
Ammonia (NH3) is a key commodity chemical of vital importance for fertilisers. It is made on an industrial scale via the Haber Bosch process, which requires significant infrastructure to be in place such that ammonia is generally made in large ...
Shipman, Michael A., Symes, Mark D.
core   +1 more source

Improving the strength and toughness of macroscale double networks by exploiting Poisson’s ratio mismatch

open access: yesScientific 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

Construction and testing of self-drilled soil nails [PDF]

open access: yes, 2016
Current standards and best practice guidance recognise that testing of self-drilled hollow bar soil nails can be problematic as conventional packers and debonded lengths cannot be constructed.
Lindsay, Fraser M.   +2 more
core   +2 more sources

Hydrogen-bonded multilayer thin films and capsules based on poly(2-n-propyl-2-oxazoline) and tannic acid : investigation on intermolecular forces, stability, and permeability [PDF]

open access: yes, 2019
In recent years, hydrogen-bonded multilayer thin films and capsules based on neutral and nontoxic building blocks have been receiving interest for the design of stimuli-responsive drug delivery systems and for the preparation of thin-film coatings ...
Hoogenboom, Richard   +5 more
core   +1 more source

Sacrificial Bonds and Hidden Length: Unraveling Molecular Mesostructures in Tough Materials [PDF]

open access: yesBiophysical 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

Tunable anisotropy in inverse opals and emerging optical properties [PDF]

open access: yes, 2014
Using self-assembly, nanoscale materials can be fabricated from the bottom up. Opals and inverse opals are examples of self-assembled nanomaterials made from crystallizing colloidal particles.
Alvarez-Puebla R. A.   +58 more
core   +1 more source

Self-healing composites: A review [PDF]

open access: yes, 2015
Self-healing composites are composite materials capable of automatic recovery when damaged. They are inspired by biological systems such as the human skin which are naturally able to heal themselves.
Ji, Chunqian   +2 more
core   +2 more sources

Sacrificial adhesive bonding: a powerful method for fabrication of glass microchips [PDF]

open access: yesScientific Reports, 2015
AbstractA new protocol for fabrication of glass microchips is addressed in this research paper. Initially, the method involves the use of an uncured SU-8 intermediate to seal two glass slides irreversibly as in conventional adhesive bonding-based approaches. Subsequently, an additional step removes the adhesive layer from the channels. This step relies
Renato S. Lima   +6 more
openaire   +2 more sources

The role of topology and thermal backbone fluctuations on sacrificial bond efficacy in mechanical metalloproteins

open access: yesNew 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

Home - About - Disclaimer - Privacy