scholarly journals Plant Protoplasts: Rational Design Principles for the Transport and Subcellular Distribution of Nanomaterials into Plant Protoplasts (Small 44/2018)

Small ◽  
2018 ◽  
Vol 14 (44) ◽  
pp. 1870202 ◽  
Author(s):  
Tedrick Thomas Salim Lew ◽  
Min Hao Wong ◽  
Seon-Yeong Kwak ◽  
Rosalie Sinclair ◽  
Volodymyr B. Koman ◽  
...  
Small ◽  
2018 ◽  
Vol 14 (44) ◽  
pp. 1802086 ◽  
Author(s):  
Tedrick Thomas Salim Lew ◽  
Min Hao Wong ◽  
Seon-Yeong Kwak ◽  
Rosalie Sinclair ◽  
Volodymyr B. Koman ◽  
...  

2020 ◽  
Author(s):  
Riley Hanus ◽  
Janine George ◽  
Max Wood ◽  
Alexander Bonkowski ◽  
Yongqiang Cheng ◽  
...  

<pre><pre>The physics of heat conduction puts practical limits on many technological fields such as energy production, storage, and conversion. It is now widely appreciated that the phonon-gas model does not describe the full vibrational spectrum in amorphous materials, since this picture likely breaks down at higher frequencies. A two-channel heat conduction model, which uses harmonic vibrational states and lattice dynamics as a basis, has recently been shown to capture both crystal-like (phonon-gas channel) and amorphous-like (diffuson channel) heat conduction. While materials design principles for the phonon-gas channel are well established, similar understanding and control of the diffuson channel is lacking. In this work, in order to uncover design principles for the diffuson channel, we study structurally-complex crystalline Yb<sub>14</sub>(Mn,Mg)Sb<sub>11</sub>, a champion thermoelectric material above 800 K, experimentally using inelastic neutron scattering and computationally using the two-channel lattice dynamical approach. Our results show that the diffuson channel indeed dominates in Yb14MgSb<sub>11</sub> above 300 K. More importantly, we demonstrate a method for the rational design of amorphous-like heat conduction by considering the energetic proximity phonon modes and modifying them through chemical means. We show that increasing (decreasing) the mass on the Sb-site decreases (increases) the energy of these modes such that there is greater (smaller) overlap with Yb-dominated modes resulting in a higher (lower) thermal conductivity. This design strategy is exactly opposite of what is expected when the phonon-gas channel and/or common analytical models for the diffuson channel are considered, since in both cases an increase in atomic mass commonly leads to a decrease in thermal conductivity. This work demonstrates how two-channel lattice dynamics can not only quantitatively predict the relative importance of the phonon-gas and diffuson channels, but also lead to rational design strategies in materials where the diffuson channel is important. </pre></pre>


Nanoscale ◽  
2021 ◽  
Author(s):  
Hongxu Liu ◽  
Chiara Lionello ◽  
Jenna Westley ◽  
Annalisa Cardellini ◽  
Uyen Huynh ◽  
...  

Understanding the molecular rules behind the dynamics of supramolecular assemblies is fundamentally important for the rational design of responsive assemblies with tunable properties. Herein, we report that the dynamics of...


Nanoscale ◽  
2016 ◽  
Vol 8 (5) ◽  
pp. 3125-3137 ◽  
Author(s):  
Soma Dhakal ◽  
Matthew R. Adendorff ◽  
Minghui Liu ◽  
Hao Yan ◽  
Mark Bathe ◽  
...  

Using experimental and computational approaches to define sequence-level design principles that enable rationally improved closure and tweezer-actuated enzyme function of a DNA tweezer.


2020 ◽  
Vol 117 (22) ◽  
pp. 11878-11886 ◽  
Author(s):  
Priyamvada Jadaun ◽  
Leonard F. Register ◽  
Sanjay K. Banerjee

Spin Hall effect (SHE), a mechanism by which materials convert achargecurrent into aspincurrent, invokes interesting physics and promises to empower transformative, energy-efficient memory technology. However, fundamental questions remain about the essential factors that determine SHE. Here, we solve this open problem, presenting a comprehensive theory of five rational design principles for achievinggiantintrinsic SHE in transition metal oxides. Arising from our key insight regarding the inherently geometric nature of SHE, we demonstrate that two of these design principles are weak crystal fields and the presence of structural distortions. Moreover, we discover that antiperovskites are a highly promising class of materials for achieving giant SHE, reaching SHE values anorder of magnitudelarger than that reported for any oxide. Additionally, we derive three other design principles for enhancing SHE. Our findings bring deeper insight into the physics driving SHE and could help enhance and externally control SHE values.


2020 ◽  
Vol 17 (6) ◽  
pp. 2175-2185 ◽  
Author(s):  
Naoki Tamemoto ◽  
Misao Akishiba ◽  
Kentarou Sakamoto ◽  
Kenichi Kawano ◽  
Hiroshi Noguchi ◽  
...  

2016 ◽  
Vol 18 (47) ◽  
pp. 32534-32540 ◽  
Author(s):  
Zhan-Wei Li ◽  
You-Liang Zhu ◽  
Zhong-Yuan Lu ◽  
Zhao-Yan Sun

A vast collection of fascinating supracolloidal fullerene-like cages has been achievedviathe self-assembly of soft three-patch particles designed to mimic non-planar sp2hybridized carbon atoms in fullerenes, through the rational design of patch configuration, size, and interaction.


2020 ◽  
Author(s):  
Riley Hanus ◽  
Janine George ◽  
Max Wood ◽  
Alexander Bonkowski ◽  
Yongqiang Cheng ◽  
...  

<pre><pre>The physics of heat conduction puts practical limits on many technological fields such as energy production, storage, and conversion. It is now widely appreciated that the phonon-gas model does not describe the full vibrational spectrum in amorphous materials, since this picture likely breaks down at higher frequencies. A two-channel heat conduction model, which uses harmonic vibrational states and lattice dynamics as a basis, has recently been shown to capture both crystal-like (phonon-gas channel) and amorphous-like (diffuson channel) heat conduction. While materials design principles for the phonon-gas channel are well established, similar understanding and control of the diffuson channel is lacking. In this work, in order to uncover design principles for the diffuson channel, we study structurally-complex crystalline Yb<sub>14</sub>(Mn,Mg)Sb<sub>11</sub>, a champion thermoelectric material above 800 K, experimentally using inelastic neutron scattering and computationally using the two-channel lattice dynamical approach. Our results show that the diffuson channel indeed dominates in Yb14MgSb<sub>11</sub> above 300 K. More importantly, we demonstrate a method for the rational design of amorphous-like heat conduction by considering the energetic proximity phonon modes and modifying them through chemical means. We show that increasing (decreasing) the mass on the Sb-site decreases (increases) the energy of these modes such that there is greater (smaller) overlap with Yb-dominated modes resulting in a higher (lower) thermal conductivity. This design strategy is exactly opposite of what is expected when the phonon-gas channel and/or common analytical models for the diffuson channel are considered, since in both cases an increase in atomic mass commonly leads to a decrease in thermal conductivity. This work demonstrates how two-channel lattice dynamics can not only quantitatively predict the relative importance of the phonon-gas and diffuson channels, but also lead to rational design strategies in materials where the diffuson channel is important. </pre></pre>


2012 ◽  
Vol 628 ◽  
pp. 57-62 ◽  
Author(s):  
Ji Feng Xu ◽  
Han Ning Zhang

Appling the design principles and methods of Ergonomics into the modern office furniture design, analysis of the design elements of the modern office furniture in Ergonomics, for the concept of ensuring that human health, safe, comfortable and efficient, provided scientific and rational design method of Ergonomics for the modern office furniture design.


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