scholarly journals Locomotion of the C60-based nanomachines on graphene surfaces

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Seyedeh Mahsa Mofidi ◽  
Hossein Nejat Pishkenari ◽  
Mohammad Reza Ejtehadi ◽  
Alexey V. Akimov
Keyword(s):  
Rotational Diffusion ◽  
Single Layer ◽  
Axial Rotation ◽  
Single Layer Graphene ◽  
Rolling Motion ◽  
Graphene Monolayer ◽  
Layer Graphene ◽  
Surface Rotation ◽  
Sliding Mechanism

AbstractWe provide a comprehensive computational characterization of surface motion of two types of nanomachines with four C60 “wheels”: a flexible chassis Nanocar and a rigid chassis Nanotruck. We study the nanocars’ lateral and rotational diffusion as well as the wheels’ rolling motion on two kinds of graphene substrates—flexible single-layer graphene which may form surface ripples and an ideally flat graphene monolayer. We find that the graphene surface ripples facilitate the translational diffusion of Nanocar and Nanotruck, but have little effect on their surface rotation or the rolling of their wheels. The latter two types of motion are strongly affected by the structure of the nanomachines instead. Surface diffusion of both nanomachines occurs preferentially via a sliding mechanism whereas the rolling of the “wheels” contributes little. The axial rotation of all “wheels” is uncorrelated.

scholarly journals Development of a Novel Nanoarchitecture of the Robust Photosystem I from a Volcanic Microalga Cyanidioschyzon merolae on Single Layer Graphene for Improved Photocurrent Generation

2021 ◽  
Vol 22 (16) ◽  
pp. 8396
Author(s):  
Miriam Izzo ◽  
Margot Jacquet ◽  
Takayuki Fujiwara ◽  
Ersan Harputlu ◽  
Radosław Mazur ◽  
...  
Keyword(s):  
Photosystem I ◽  
Direct Electron Transfer ◽  
Single Layer ◽  
Genetically Engineered ◽  
Single Layer Graphene ◽  
Cyanidioschyzon Merolae ◽  
Graphene Monolayer ◽  
Current Output ◽  
Electron Transfer Pathway ◽  
Layer Graphene

Here, we report the development of a novel photoactive biomolecular nanoarchitecture based on the genetically engineered extremophilic photosystem I (PSI) biophotocatalyst interfaced with a single layer graphene via pyrene-nitrilotriacetic acid self-assembled monolayer (SAM). For the oriented and stable immobilization of the PSI biophotocatalyst, an His6-tag was genetically engineered at the N-terminus of the stromal PsaD subunit of PSI, allowing for the preferential binding of this photoactive complex with its reducing side towards the graphene monolayer. This approach yielded a novel robust and ordered nanoarchitecture designed to generate an efficient direct electron transfer pathway between graphene, the metal redox center in the organic SAM and the photo-oxidized PSI biocatalyst. The nanosystem yielded an overall current output of 16.5 µA·cm−2 for the nickel- and 17.3 µA·cm−2 for the cobalt-based nanoassemblies, and was stable for at least 1 h of continuous standard illumination. The novel green nanosystem described in this work carries the high potential for future applications due to its robustness, highly ordered and simple architecture characterized by the high biophotocatalyst loading as well as simplicity of manufacturing.

scholarly journals Bias-Dependent Intrinsic RF Thermal Noise Modeling and Characterization of Single-Layer Graphene FETs

2021 ◽  
pp. 1-1
Author(s):  
Nikolaos Mavredakis ◽  
Anibal Pacheco-Sanchez ◽  
Paulius Sakalas ◽  
Wei Wei ◽  
Emiliano Pallecchi ◽  
...  
Keyword(s):  
Thermal Noise ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Noise Modeling ◽  
Layer Graphene

Characterization of Optical Absorption and Polarization Dependence of Single-Layer Graphene Integrated on a Silicon Wire Waveguide

2013 ◽  
Vol 52 (6R) ◽  
pp. 060203 ◽  
Author(s):  
Rai Kou ◽  
Shinichi Tanabe ◽  
Tai Tsuchizawa ◽  
Kaori Warabi ◽  
Satoru Suzuki ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Single Layer ◽  
Polarization Dependence ◽  
Single Layer Graphene ◽  
Layer Graphene
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