Results 91 to 100 of about 139,636 (296)

Polyimide processing additives [PDF]

, 1992
A process for preparing polyimides having enhanced melt flow properties is described. The process consists of heating a mixture of a high molecular weight poly-(amic acid) or polyimide with a low molecular weight amic acid or imide additive in the range ...
Burks, Harold D., Fletcher, James C., Pratt, J. Richard, St.clair, Terry L., Stoakley, Diane M.   +4 more
core   +1 more source

Fluid dynamics: an emerging route for the scalable production of graphene in the last five years

, 2016
Bulk applications of graphene in fields such as advanced composites, conductive ink, and energy storage require cheap and scalable graphene. Fortunately, in the last decade, liquid-phase exfoliation of graphite to give pristine graphene has been thought ...
Shen, Zhigang, Yi, Min
core   +1 more source

Actuating and Sensing Composites of Liquid Crystal Elastomers and Poly(ionic liquid)s

Advanced Functional Materials, EarlyView.
Ionic conductive, mechanically tough, flexible, and stretchable filaments of a composite material comprising a liquid crystal elastomer and a poly(ionic liquid) are produced through 3D printing, which exhibit large actuation strain under stimulation and electrical resistance variation in response to deformation or environmental condition changes. Their
Zeping Liu, Xiaofeng Zheng, Shaoxia Zhang, Long Xu, Meng Liu, Jeremy Baribeault St‐Germain, Yue Zhao   +6 more
wiley   +1 more source

Silica reusable surface insulation [PDF]

, 1976
A reusable silica surface insulation material is provided by bonding amorphous silica fibers with colloidal silica at an elevated temperature. The surface insulation is ordinarily manufactured in the form of blocks (i.e., tiles)
Goldstein, H. E., Leiser, D. B., Smith, M.   +2 more
core   +1 more source

Stabilization of heterodimensional cycles

, 2011
We consider diffeomorphisms $f$ with heteroclinic cycles associated to saddles $P$ and $Q$ of different indices. We say that a cycle of this type can be stabilized if there are diffeomorphisms close to $f$ with a robust cycle associated to hyperbolic ...
C Bonatti, Ch. Bonatti, Ch. Bonatti, Ch. Bonatti, Ch. Bonatti, Ch. Bonatti, Ch. Bonatti, Ch. Bonatti, Conley C, L J Díaz, Moreira C, Palis J, Palis J, S Kiriki, Shinohara K   +14 more
core   +1 more source

In Situ 3D Bioprinting: Impact of Cross‐Linking on the Adhesive Properties of Hydrogels

Advanced Functional Materials, EarlyView.
In situ 3D bioprinting enables the direct deposition of cell‐laden, adhesive biomaterials for on‐site tissue regeneration. This review provides a comprehensive overview of how cross‐linking influences the bioadhesive properties of hydrogels used in 3D bioprinting, highlighting cross‐linking triggers, bioadhesion mechanisms, polymer interpenetration ...
Odile Romero Fernandez, Mulazim Hussain Asim, Shumaila Arshad, Gergely Kali, Andreas Bernkop‐Schnürch   +4 more
wiley   +1 more source

A New Model of Air–Oxygen Blender for Mechanical Ventilators Using Dynamic Pressure Sensors

Sensors
Respiratory diseases are among the leading causes of death globally, with the COVID-19 pandemic serving as a prominent example. Issues such as infections affect a large population and, depending on the mode of transmission, can rapidly spread worldwide ...
Gabryel F. Soares, Gilberto Fernandes, Otacílio M. Almeida, Gildario D. Lima, Joel J. P. C. Rodrigues   +4 more
doaj   +1 more source

Mechanochromism of Glassy Polymers Enabled by a Loop‐Forming Supramolecular Mechanophore

Advanced Functional Materials, EarlyView.
The supramolecular mechanophore LOOP is covalently introduced into glassy polymers, capable of reporting force‐induced pre‐failure damage and local fracture events in polymer glasses. Under different mechanical deformation modes, including grinding, tensile stretching, and scratching, LOOP probes irreversible events in polymer glasses through a ...
Linlin Deng, Chantal Graafsma, Felix Meyenhofer, Iulia Scarlat, Luca Bertossi, Christoph Weder, Jess M. Clough   +6 more
wiley   +1 more source

Pengembangan Techno Virtual Berbasis Website sebagai Media Pembelajaran Rekayasa Visual Blender 3D bagi Mahasiswa Desain Produk

ANDHARUPA: Jurnal Desain Komunikasi Visual & Multimedia, 2019
Abstrak Penelitian terapan ini bertujuan untuk  mengembangkan model pembelajaran alih media teknologi maya (techno virtual) rekayasa visual Blender 3D bagi mahasiswa berbasis website learning.
Baskoro Suryo Banindro
doaj   +1 more source

Uncovering the Origin of Efficiency Roll‐Off in TADF OLEDs

Advanced Functional Materials, EarlyView.
OLEDs based on thermally activated delayed fluorescent (TADF) materials often suffer from a severe drop in efficiency at high brightness levels. This work presents a technique to uncover the source of this efficiency drop, and quantifies the exciton‐exciton and exciton‐polaron annihilation processes responsible for efficiency losses in our TADF OLEDs ...
Liam G. King, Kou Yoshida, Arvydas Ruseckas, Ifor D. W. Samuel   +3 more
wiley   +1 more source