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Centimeter-scale gas-sieving nanoporous single-layer graphene membrane

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Graphene Confers Ultralow Friction on Nanogear Cogs

Roberto Guarino, Enrico Gnecco

Friction-induced energy dissipation impedes the performance of nanomechanical devices. Nevertheless, the application of graphene is known to modulate frictional dissipation by inducing local strain. This work reports on the nanomechanics of graphene confor ...

2021

Rapid Gas Transport from Block-Copolymer Templated Nanoporous Carbon Films

Kumar Varoon Agrawal, Kuang-Jung Hsu, Marina Micari, Xuekui Duan, Luis Francisco Villalobos Vazquez de la Parra, Mostapha Dakhchoune, Jing Zhao

Porous carbon films, attributed to their superior thermal and chemical robustness, are attractive for a number of applications. In the context of molecular separation, a major focus has been on films where the effective pore diameter is lower than 1 nm, e. ...

AMER CHEMICAL SOC2021

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To date, the engineering of single-stranded DNA-SWCNT (DNA-SWCNT) optical biosensors have largely focused on creating sensors for new applications with little focus on optimising existing sensors for in vitro and in vivo conditions. Recent studies have sho ...

2021

Method of preparation of porous polymeric support layer and uses thereof

Kumar Varoon Agrawal, Luis Francisco Villalobos Vazquez de la Parra, Deepu Joseph Babu

The invention relates to methods for the preparation of polymer supported graphene membrane by non-solvent induced phase separation and resulting products thereof, in particular useful for the preparation of gas separation membranes, in particular for He o ...

2021

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Properties of SWCNT-based sensors such as brightness and detection capabilities strongly depend on the characteristics of the wrapping used to suspend the nanotubes. In this study, we explore ways to modify the properties of DNA-SWCNT sensors by us- ing ch ...

2021

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In-plane permeability of small area (100 × 50 mm) alumina fiber woven fabrics grafted with aligned carbon nanotubes (CNT) was quantified by placing them in series with a glass mat of known permeability during a flow experiment. The methodology was first va ...

2021

Large Suspended Monolayer and Bilayer Graphene Membranes with Diameter up to 750 mu m

Luis Guillermo Villanueva Torrijo, Tom Larsen, Marsha Mary Parmar, Sayedeh Shirin Afyouni Akbari

In this paper ultra clean monolayer and bilayer Chemical Vapor Deposited (CVD) graphene membranes with diameters up to 500 mu m and 750 mu m, respectively have been fabricated using Inverted Floating Method (IFM) followed by thermal annealing in vacuum. Th ...

NATURE PUBLISHING GROUP2020

Free-Standing Graphene Oxide and Carbon Nanotube Hybrid Papers with Enhanced Electrical and Mechanical Performance and Their Synergy in Polymer Laminates

Roberto Guarino, Wei Liu

Hybrid nanomaterials fabricated by the heterogeneous integration of 1D (carbon nanotubes) and 2D (graphene oxide) nanomaterials showed synergy in electrical and mechanical properties. Here, we reported the infiltration of carboxylic functionalized single-w ...

2020

A systematic microscopic analysis of the various resistive effects involved in the electronic detection of single biomolecules in a nanopore of a MoS2 nanoribbon is presented. The variations of the transverse electronic current along the two-dimensional (2 ...

2020

Graphene is considered an enabling material for next generation sensors, due to the remarkable properties derived from its atomic thickness. However, these promises come with acute sensitivity to parasite adsorbates, that may hinder reaching the full poten ...

AMER PHYSICAL SOC2020