Graphene oxide based moisture-responsive biomimetic film actuators with nacre-like layered structures

2017 ◽  
Vol 5 (28) ◽  
pp. 14604-14610 ◽  
Author(s):  
Yaqian Zhang ◽  
Haoyang Jiang ◽  
Feibo Li ◽  
Yanhong Xia ◽  
Yu Lei ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Potential Energy ◽  
Chemical Potential ◽  
Mechanical Deformation ◽  
Layered Structures ◽  
Sustainable Society ◽  
Humidity Gradient ◽  
Biomimetic Actuators

Hygroresponsive biomimetic actuators that convert chemical potential energy contained within the humidity gradient into mechanical deformation are of particular significance for realizing a sustainable society.

Highly efficient moisture-enabled electricity generation from graphene oxide frameworks

2016 ◽  
Vol 9 (3) ◽  
pp. 912-916 ◽  
Author(s):  
Fei Zhao ◽  
Yuan Liang ◽  
Huhu Cheng ◽  
Lan Jiang ◽  
Liangti Qu
Keyword(s):  
Graphene Oxide ◽  
Potential Energy ◽  
Electric Power ◽  
Electricity Generation ◽  
High Performance ◽  
Energy Harvester ◽  
Chemical Potential ◽  
Three Dimensional ◽  
Oxygen Gradient ◽  
Highly Efficient

A high performance chemical potential energy harvester for directly generating electric power has been developed on the basis of the three-dimensional assembly of graphene oxide with an oxygen gradient.

scholarly journals Reduced Graphene Oxide-Based Double Network Polymeric Hydrogels for Pressure and Temperature Sensing

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 3162 ◽  
Author(s):  
Wei Liu ◽  
Xiaoyuan Zhang ◽  
Gang Wei ◽  
Zhiqiang Su
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Mechanical Deformation ◽  
Temperature Sensors ◽  
Carboxymethyl Chitosan ◽  
Temperature Sensitive ◽  
Facile Synthesis ◽  
Bending Properties ◽  
Double Network ◽  
Reduced Graphene

We demonstrate the fabrication of novel reduced graphene oxide (rGO)-based double network (DN) hydrogels through the polymerization of poly(N-isopropylacrylamide) (PNIPAm) and carboxymethyl chitosan (CMC). The facile synthesis of DN hydrogels includes the reduction of graphene oxide (GO) by CMC, and the subsequent polymerization of PNIPAm. The presence of rGO in the fabricated PNIPAm/CMC/rGO DN hydrogels enhances the compressibility and flexibility of hydrogels with respect to pure PNIPAm hydrogels, and they exhibit favorable thermoresponsivity, compressibility, and conductivity. The created hydrogels can be continuously cyclically compressed and have excellent bending properties. Furthermore, it was found that the hydrogels are pressure- and temperature-sensitive, and can be applied to the design of both pressure and temperature sensors to detect mechanical deformation and to measure temperature. Our preliminary results suggest that these rGO-based DN hydrogels exhibit a high potential for the fabrication of soft robotics and artificially intelligent skin-like devices.

Strong composite films with layered structures prepared by casting silk fibroin–graphene oxide hydrogels

Nanoscale ◽  
2013 ◽  
Vol 5 (9) ◽  
pp. 3780 ◽  
Author(s):  
Liang Huang ◽  
Chun Li ◽  
Wenjing Yuan ◽  
Gaoquan Shi
Keyword(s):  
Graphene Oxide ◽  
Silk Fibroin ◽  
Composite Films ◽  
Layered Structures

scholarly journals Graphene-Based Assemblies for Moist-Electric Generation

2021 ◽  
Vol 9 ◽  
Author(s):  
Qing Chen ◽  
Jian Zhao ◽  
Huhu Cheng
Keyword(s):  
Potential Energy ◽  
Functional Groups ◽  
Future Development ◽  
Chemical Potential ◽  
Short Review ◽  
Water Molecules ◽  
Conversion System ◽  
Energy Conversion System ◽  
Electric Generation ◽  
Preparation Techniques

Moisture is a ubiquitous and clean resource in nature, which continuously diffuses in the atmosphere and demonstrates huge chemical potential energy that is difficult to be utilized. Recently, the generation of power from interactions between graphene and gaseous water molecules in moisture has triggered great research interest that could provide a novel energy conversion system for our society. graphene-based assemblies have been considered as ideal platforms for moist-electric generation (MEG) in many studies, because of the abundant of functional groups, controllable microstructure and diverse macro morphologies. Therefore, in this short review, we will first state the preparation techniques of graphene-based assemblies for MEG. Then, the fundamental mechanisms of MEG are discussed and the latest advances on graphene MEG are reviewed. Finally, an overview of the current challenges and future development trends in graphene MEG is provided.

Mimicking Photosynthetic Electron Transfer

1990 ◽  
Vol 218 ◽  
Author(s):  
Devens Gust ◽  
Thomas A. Moore ◽  
Ana L. Moore
Keyword(s):  
Electron Transfer ◽  
Potential Energy ◽  
Reaction Center ◽  
Chemical Potential ◽  
Reaction Centers ◽  
Photosynthetic Reaction Centers ◽  
Photovoltaic Devices ◽  
Molecular Scale ◽  
Energetic Charge ◽  
Photosynthetic Electron Transfer

AbstractThe photosynthetic reaction centers of plants and bacteria are photovoltaic devices on the molecular scale which convert light energy into chemical potential energy in the form of long-lived, energetic charge separated states. It is now possible to prepare synthetic multicomponent molecules which mimic important aspects of this process. For example, one of the keys to reaction center function is a multistep electron transfer strategy. In this paper, two general types of multistep electron transfer, sequential and parallel, are described and illustrated with several synthetic triad and pentad molecules.

The Molecular & Crystal Structures of Polycyclic Energetic Materials

1992 ◽  
Vol 296 ◽  
Author(s):  
Richard Gilardi
Keyword(s):  
Potential Energy ◽  
Energetic Materials ◽  
Chemical Potential ◽  
Energetic Material ◽  
Molecular Structures ◽  
Naval Research ◽  
Polycyclic Compounds ◽  
Crystal Density ◽  
Obvious Benefit ◽  
Normal Bond

AbstractEven before the ‘Buckey-ball’ (or fullerene) era, organic chemists were interested in, and attracted to, the synthesis of compounds containing many rings fused together - especially the symmetric ones. By virtue of their balanced linkages, such compounds may be kinetically stable despite inclusion of massive deviations from normal bond distances and angles. These distortions, in compounds such as cubanes, tetrahedranes, dodecahedranes and prismanes, comprise a storehouse of chemical potential energy known to the chemist as ‘strain energy’ (unrelated to overall crystal strain discussed in many materials studies).Besides the obvious benefit of including more potential energy in an energetic material, the arrangement of atoms in ring assemblies (rather than chains) leads to a material with a high intrinsic crystal density - a sine qua non for an explosive or propellant. It has long been recognized that the next generation of energetics - better in performance and/or safety - will contain many polycyclic compounds. Hundreds of model compounds were synthesized in the last decade, and their molecular structures identified or verified at the Naval Research Lab. Some of the most promising, beautiful, and unusual ones, including many energetic cubanes, will be discussed.

Two-dimensional and three-dimensional hybrid assemblies based on graphene oxide and other layered structures: A carbon science perspective

Carbon ◽  
2017 ◽  
Vol 125 ◽  
pp. 437-453 ◽  
Author(s):  
Cynthia Guerrero-Bermea ◽  
Lakshmy Pulickal Rajukumar ◽  
Archi Dasgupta ◽  
Yu Lei ◽  
Yoshio Hashimoto ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Three Dimensional ◽  
Layered Structures ◽  
Two Dimensional ◽  
Hybrid Assemblies

scholarly journals Artificial Force Induced Reaction (AFIR) Method for Exploring Quantum Chemical Potential Energy Surfaces

2016 ◽  
Vol 16 (5) ◽  
pp. 2232-2248 ◽  
Author(s):  
Satoshi Maeda ◽  
Yu Harabuchi ◽  
Makito Takagi ◽  
Tetsuya Taketsugu ◽  
Keiji Morokuma
Keyword(s):  
Potential Energy ◽  
Quantum Chemical ◽  
Potential Energy Surfaces ◽  
Chemical Potential ◽  
Energy Surfaces ◽  
Induced Reaction
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