Compact Thermal Actuation by Water and Flexible Hydrophobic Nanopore

ACS Nano ◽  
2021 ◽  
Author(s):  
Mirosław Chorążewski ◽  
Paweł Zajdel ◽  
Tong Feng ◽  
Dong Luo ◽  
Alexander R. Lowe ◽  
...  
Keyword(s):  
Thermal Actuation

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

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

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

System Design and Modeling of a Thermally Activated Reconfigurable Wing

2010 ◽  
Author(s):  
Richard Beblo ◽  
Darrel Robertson ◽  
James Joo ◽  
Brian Smyers ◽  
Gregory Reich
Keyword(s):  
Thermal Energy ◽  
High Speed ◽  
Frictional Heating ◽  
Mechanical Analysis ◽  
Design Tool ◽  
System Level ◽  
Morphing Aircraft ◽  
Thermal Actuation ◽  
Short Period ◽  
Reconfigurable Structures

Reconfigurable structures such as morphing aircraft generally require an on board energy source to function. Frictional heating during the high speed deployment of a blunt nosed low speed reconnaissance air vehicle can provide a large amount of thermal energy during a short period of time. This thermal energy can be collected, transferred, and utilized to reconfigure the deployable aircraft. Direct utilization of thermal energy has the ability to significantly decrease or eliminate the losses associated with converting thermal energy to other forms, such as electric. The following work attempts to describe possible system designs and components that can be utilized to transfer the thermal energy harvested at the nose of the aircraft during deployment to internal components for direct thermal actuation of a reconfigurable wing structure. A model of a loop heat pipe is presented and used to predict the time dependant transfer of energy. Previously reported thermal profiles of the nose of the aircraft calculated based on trajectory and mechanical analysis of the actuation mechanism are reviewed and combined with the model of the thermal transport system providing a system level feasibility investigation and design tool. The efficiency, implementation, benefits, and limitations of the direct use thermal system are discussed and compared with currently utilized systems.

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

Fatigue of NiTi for Dampers and Actuators

2012 ◽  
Vol 83 ◽  
pp. 18-27 ◽  
Author(s):  
Antonio Isalgue ◽  
Vicenç Torra ◽  
Fabio Casciati ◽  
Sara Casciati
Keyword(s):  
Fatigue Life ◽  
Martensitic Transformation ◽  
Size Effects ◽  
Main Parameter ◽  
Testing Machine ◽  
Constant Load ◽  
Thermomechanical Properties ◽  
Niti Wire ◽  
Mechanical Cycling ◽  
Thermal Actuation

The application of Shape Memory Alloy (SMA) devices to practical uses need well established performance. The reliable application in some areas, as dampers in engineering, needs a known, relatively long fatigue life (some million oscillations). The thermomechanical properties of SMA, based on their martensitic transformation, made them attractive to use for damping, taking advantage of the pseudoelastic window and hysteresis on transforming-retransforming. Due to size effects and to the fact that fatigue failure in metallic NiTi usually comes from a defect inducing crack growth, fatigue has to be studied for concrete applications, with the correct samples. The present work points out the possibility to apply NiTi to dampers and actuators. Testing machine experiments indicate that the main parameter controlling fatigue life is the effective stress on the NiTi wire. Long wire life (in the million cycle regime) can be achieved under limited stresses (around or under 200 MPa). Also, experiments have been done on thermal actuation of NiTi wire under traction at constant load. The results demonstrate that long actuator life (larger than 300000 cycles) can be achieved at low stresses (around 100 MPa), coherently with the mechanical cycling. From our results, NiTi is useful to effectively damp vibrations even at relatively low stresses and strains. The experimental results from facilities (cable No. 1 in ELSA-JRC, Ispra, Italy, and IFSTTAR test cable, near Nantes, France) confirm that NiTi wire is able to damp stayed cables.

scholarly journals Technique for Enhanced Flow Control Efficiency Through Thermal Actuation

AIAA Journal ◽  
2018 ◽  
Vol 56 (9) ◽  
pp. 3399-3413 ◽  
Author(s):  
Damian Hirsch ◽  
Arvin Shmilovich ◽  
Edward Whalen ◽  
Morteza Gharib
Keyword(s):  
Flow Control ◽  
Control Efficiency ◽  
Thermal Actuation
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