Relaxation Dynamics and Phase Transitions in Ionic Liquids: Viscoelastic Properties from the Liquid to the Solid State

2015 ◽  
Vol 119 (40) ◽  
pp. 12905-12911 ◽  
Author(s):  
O. Palumbo ◽  
F. Trequattrini ◽  
F. M. Vitucci ◽  
A. Paolone
Keyword(s):  
Ionic Liquids ◽  
Phase Transitions ◽  
Solid State ◽  
Viscoelastic Properties ◽  
Relaxation Dynamics

From Water Solutions to Ionic Liquids with Solid State Nanopores as a Perspective to Study Transport and Translocation Phenomena

Small ◽  
2021 ◽  
pp. 2100777
Author(s):  
Sanjin Marion ◽  
Nataša Vučemilović‐Alagić ◽  
Mario Špadina ◽  
Aleksandra Radenović ◽  
Ana‐Sunčana Smith
Keyword(s):  
Ionic Liquids ◽  
Solid State ◽  
Water Solutions

Revealing viscoelastic bending relaxation dynamics of isolated semi-flexible colloidal polymers

Soft Matter ◽  
2021 ◽  
Author(s):  
Simon Stuij ◽  
Hannah Jonas ◽  
Zhe Gong ◽  
Stefano Sacanna ◽  
Tom Kodger ◽  
...  
Keyword(s):  
Crucial Role ◽  
Viscoelastic Properties ◽  
Colloidal Particles ◽  
Biological Materials ◽  
Relaxation Dynamics

The viscoelastic properties of filaments and biopolymers play a crucial role in soft and biological materials from biopolymer networks to novel synthetic metamaterials. Colloidal particles with specific valency allow mimicking...

Miniaturisation and simplification of solid-state proton activity sensors for non-aqueous media and ionic liquids

The Analyst ◽  
2015 ◽  
Vol 140 (3) ◽  
pp. 889-894 ◽  
Author(s):  
Orawan Winther-Jensen ◽  
Jessie L. Hamilton ◽  
Chun H. Ng ◽  
Bartlomiej Kolodziejczyk ◽  
Bjorn Winther-Jensen
Keyword(s):  
Ionic Liquids ◽  
Solid State ◽  
Water Content ◽  
Aqueous Media ◽  
Activity Sensors ◽  
Proton Activity

Solid-state proton activity sensors capable of measuring the proton activity of non-aqueous media and ionic liquids regardless of their hydrophobicity and water content were miniaturised and simplified.

Colossal Barocaloric Effects with Ultralow Hysteresis in Two-Dimensional Metal–Halide Perovskites

2021 ◽  
Author(s):  
Jarad Mason ◽  
Jinyoung Seo ◽  
Ryan McGillicuddy ◽  
Adam Slavney ◽  
Selena Zhang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Phase Transitions ◽  
Solid State ◽  
Hydrostatic Pressure ◽  
Metal Halide ◽  
Two Dimensional ◽  
Vapor Compression ◽  
Entropy Changes ◽  
Halide Perovskites ◽  
Solid State Cooling

Abstract Nearly 4,400 TWh of electricity—20% of the total consumed in the world—is used each year by refrigerators, air conditioners, and heat pumps for cooling. In addition to the 2.3 Gt of carbon dioxide emitted during the generation of this electricity, the vapor-compression-based devices that provided the bulk of this cooling emitted fluorocarbon refrigerants with a global warming potential equivalent to 1.5 Gt of carbon dioxide into the atmosphere. With population and economic growth expected to dramatically increase over the next several decades, the development of alternative cooling technologies with improved efficiency and reduced emissions will be critical to meeting global cooling needs in a more sustainable fashion. Barocaloric materials, which undergo thermal changes in response to applied hydrostatic pressure, offer the potential for solid-state cooling with high energy efficiency and zero direct emissions, as well as faster start-up times, quieter operation, greater amenability to miniaturization, and better recyclability than conventional vapor-compression systems. Efficient barocaloric cooling requires materials that undergo reversible phase transitions with large entropy changes, high sensitivity to hydrostatic pressure, and minimal hysteresis, the combination of which has been challenging to achieve in existing barocaloric materials. Here, we report a new mechanism for achieving colossal barocaloric effects near ambient temperature that exploits the large volume and conformational entropy changes of hydrocarbon chain-melting transitions within two-dimensional metal–halide perovskites. Significantly, we show how the confined nature of these order–disorder phase transitions and the synthetic tunability of layered perovskites can be leveraged to reduce phase transition hysteresis through careful control over the inorganic–organic interface. The combination of ultralow hysteresis (< 1.5 K) and high barocaloric coefficients (> 20 K/kbar) leads to large reversible isothermal entropy changes (> 200 J/kg•K) at record-low pressures (< 300 bar). We anticipate that these results will help facilitate the development of barocaloric cooling technologies and further inspire new materials and mechanisms for efficient solid-state cooling.

Reversible solid-state phase transitions in confined two-layer colloidal crystals

2020 ◽  
Vol 298 (12) ◽  
pp. 1611-1617
Author(s):  
Zhuoqiang Jia ◽  
Mena Youssef ◽  
Alexandra Samper ◽  
Stefano Sacanna ◽  
Stephanie S. Lee
Keyword(s):  
Phase Transitions ◽  
Solid State ◽  
Colloidal Crystals

Zirconia-supported solid-state electrolytes for high-safety lithium secondary batteries in a wide temperature range

2017 ◽  
Vol 5 (47) ◽  
pp. 24677-24685 ◽  
Author(s):  
Renjie Chen ◽  
Wenjie Qu ◽  
Ji Qian ◽  
Nan Chen ◽  
Yujuan Dai ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Solid State ◽  
Wide Temperature Range ◽  
Solid State Electrolyte ◽  
Lithium Secondary Batteries ◽  
Temperature Range ◽  
Solid State Electrolytes

We fabricate a high-safety solid-state electrolyte by in situ immobilizing ionic liquids within a nanoporous zirconia-supported matrix.

Phase transitions of sodium niobate powder and ceramics, prepared by solid state synthesis

2010 ◽  
Vol 108 (11) ◽  
pp. 113509 ◽  
Author(s):  
J. Koruza ◽  
J. Tellier ◽  
B. Malič ◽  
V. Bobnar ◽  
M. Kosec
Keyword(s):  
Phase Transitions ◽  
Solid State ◽  
Solid State Synthesis ◽  
Sodium Niobate
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