scholarly journals Thermal actuation of hydrogels from PNIPAm, alginate, and carbon nanofibres

2017 ◽  
Vol 56 (1) ◽  
pp. 46-52 ◽  
Author(s):  
Holly Warren ◽  
Marc in het Panhuis ◽  
Geoffrey M. Spinks ◽  
David L. Officer
Keyword(s):  
Carbon Nanofibres ◽  
Thermal Actuation

scholarly journals Occupational Exposure to Carbon Nanotubes and Carbon Nanofibres: More Than a Cobweb

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 745
Author(s):  
Enrico Bergamaschi ◽  
Giacomo Garzaro ◽  
Georgia Wilson Jones ◽  
Martina Buglisi ◽  
Michele Caniglia ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Animal Studies ◽  
Chemical Properties ◽  
Biological Behavior ◽  
Cross Sectional ◽  
Carbon Nanofibres ◽  
Material Entity ◽  
Cross Sectional Design

Carbon nanotubes (CNTs) and carbon nanofibers (CNFs) are erroneously considered as singular material entities. Instead, they should be regarded as a heterogeneous class of materials bearing different properties eliciting peculiar biological outcomes both in vitro and in vivo. Given the pace at which the industrial production of CNTs/CNFs is increasing, it is becoming of utmost importance to acquire comprehensive knowledge regarding their biological activity and their hazardous effects in humans. Animal studies carried out by inhalation showed that some CNTs/CNFs species can cause deleterious effects such as inflammation and lung tissue remodeling. Their physico-chemical properties, biological behavior and biopersistence make them similar to asbestos fibers. Human studies suggest some mild effects in workers handling CNT/CNF. However, owing to their cross-sectional design, researchers have been as yet unable to firmly demonstrate a causal relationship between such an exposure and the observed effects. Estimation of acceptable exposure levels should warrant a proper risk management. The aim of this review is to challenge the conception of CNTs/CNFs as a single, unified material entity and prompt the establishment of standardized hazard and exposure assessment methodologies able to properly feeding risk assessment and management frameworks.

scholarly journals A quantitative model for a nanoscale switch accurately predicts thermal actuation behavior

Nanoscale ◽  
2021 ◽  
Author(s):  
Kyle Crocker ◽  
Joshua Johnson ◽  
Wolfgang Pfeifer ◽  
Carlos Ernesto Castro ◽  
Ralf Bundschuh
Keyword(s):  
Gold Nanoparticles ◽  
Partition Function ◽  
Physical Model ◽  
Function Analysis ◽  
Quantitative Model ◽  
Dna Origami ◽  
Thermal Actuation

Manipulation of temperature can be used to actuate DNA origami nano-hinges containing gold nanoparticles. We develop a physical model of this system that uses partition function analysis of the interaction...

A Four-Terminal, Inline, Chalcogenide Phase-Change RF Switch Using an Independent Resistive Heater for Thermal Actuation

2013 ◽  
Vol 34 (10) ◽  
pp. 1313-1315 ◽  
Author(s):  
Nabil El-Hinnawy ◽  
Pavel Borodulin ◽  
Brian Wagner ◽  
Matthew R. King ◽  
John S. Mason ◽  
...  
Keyword(s):  
Phase Change ◽  
Rf Switch ◽  
Thermal Actuation ◽  
Resistive Heater

scholarly journals Selective suspension of single layer graphene mechanochemically exfoliated from carbon nanofibres

Nano Research ◽  
2014 ◽  
Vol 7 (7) ◽  
pp. 963-972 ◽  
Author(s):  
Antonio Esaú Del Rio-Castillo ◽  
César Merino ◽  
Enrique Díez-Barra ◽  
Ester Vázquez
Keyword(s):  
Single Layer ◽  
Single Layer Graphene ◽  
Carbon Nanofibres ◽  
Layer Graphene

Au–TiO2 catalysts stabilised by carbon nanofibres

2007 ◽  
Vol 122 (3-4) ◽  
pp. 365-369 ◽  
Author(s):  
Nina Hammer ◽  
Ingvar Kvande ◽  
De Chen ◽  
Magnus Rønning
Keyword(s):  
Carbon Nanofibres

scholarly journals Assessment of nanoparticles release into the environment during drilling of carbon nanotubes/epoxy and carbon nanofibres/epoxy nanocomposites

2017 ◽  
Vol 340 ◽  
pp. 57-66 ◽  
Author(s):  
Kristof Starost ◽  
Evelien Frijns ◽  
Jo Van Laer ◽  
Nadimul Faisal ◽  
Ainhoa Egizabal ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Epoxy Nanocomposites ◽  
Carbon Nanofibres

Diamond switch using new thermal actuation principle

2003 ◽  
Vol 12 (3-7) ◽  
pp. 418-421 ◽  
Author(s):  
P. Schmid ◽  
F.J. Hernandez-Guillen ◽  
E. Kohn
Keyword(s):  
Thermal Actuation

Preferential Growth of Carbon Nanotubes/Nanofibers Using Lithographically Patterned Catalysts

2001 ◽  
Vol 675 ◽  
Author(s):  
K. B. K. Teo ◽  
M. Chhowalla ◽  
G. A. J. Amaratunga ◽  
W. I. Milne ◽  
G. Pirio ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Amorphous Carbon ◽  
Deposition Process ◽  
High Yield ◽  
Full Potential ◽  
Carbon Nanofibres ◽  
Preferential Growth ◽  
Plasma Decomposition

ABSTRACTIn order to utilise the full potential of carbon nanotubes/nanofibers, it is necessary to be able to synthesize well aligned nanotubes/nanofibres at desired locations on a substrate. This paper examines the preferential growth of aligned carbon nanofibres by PECVD using lithographically patterned catalysts. In the PECVD deposition process, amorphous carbon is deposited together with the nanotubes due to the plasma decomposition of the carbon feed gas, in this case, acetylene. The challenge is to uniformly nucleate nanotubes and reduce the unwanted amorphous carbon on both the patterned and unpatterned areas. An etching gas (ammonia) is thus also incorporated into the PECVD process and by appropriately balancing the acetylene to ammonia ratio, conditions are obtained where no unwanted amorphous carbon is deposited. In this paper, we demonstrate high yield, uniform, ‘clean’ and preferential growth of vertically aligned nanotubes using PECVD.

scholarly journals Synthesis and Magneto-Thermal Actuation of Iron Oxide Core–PNIPAM Shell Nanoparticles

2015 ◽  
Vol 7 (34) ◽  
pp. 19342-19352 ◽  
Author(s):  
Steffen Kurzhals ◽  
Ronald Zirbs ◽  
Erik Reimhult
Keyword(s):  
Iron Oxide ◽  
Shell Nanoparticles ◽  
Thermal Actuation ◽  
Iron Oxide Core
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