Browsing by Author "Coleman, Jonathan"
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2D nanosheets from fool's gold by LPE: High performance lithium-ion battery anodes made from stone
Coleman, Jonathan; Nicolosi, Valeria (2021)Recently, it has been shown that it is possible to apply liquid-phase exfoliation to non-layered materials, yielding quasi-2D nanosheets. It has been proposed that even a slight bonding anisotropy in the starting crystal ... -
3D Printing of Multifunctional Conductive Polymer Composite Hydrogels
Coleman, Jonathan; Nicolosi, Valeria; Stamenov, Plamen (2023)Functional conductive hydrogels are widely used in various application scenarios, such as artificial skin, cell scaffolds, and implantable bioelectronics. However, their novel designs and technological innovations are ... -
Additive Manufacturing of Li-Ion Batteries: A Comparative Study between Electrode Fabrication Processes
Schmitt, Wolfgang; Coleman, Jonathan; Nicolosi, Valeria (2023)Additive manufacturing strategies are gaining more importance in the context of lithium-ion batteries. The rapid prototyping, reduced waste and complex 3D structures achievable are powerful and attractive tools that are ... -
Additive Manufacturing of Ti3C2-MXene-Functionalized Conductive Polymer Hydrogels for Electromagnetic-Interference Shielding
Stamenov, Plamen; Coleman, Jonathan; Nicolosi, Valeria (2021)The ongoing miniaturization of devices and development of wireless and implantable technologies demand electromagnetic interference (EMI)shielding materials with customizability. Additive manufacturing of conductive ... -
Additive-free MXene inks and direct printing of micro-supercapacitors
Coleman, Jonathan; Nicolosi, Valeria; Mc Evoy, Niall (2019)Direct printing of functional inks is critical for applications in diverse areas including elec-trochemical energy storage, smart electronics and healthcare. However, the available prin-table ink formulations are far from ... -
All-printed dielectric capacitors from high permittivity, liquid-exfoliated BiOCl nanosheets
Coleman, Jonathan (2020)Printed networks of insulating 2D materials are promising for dielectric applications in printed electronic devices. However, this work has not really progressed beyond networks of BN nanosheets displaying dielectric ... -
Amorphous 2D-Nanoplatelets of Red Phosphorus Obtained by Liquid-Phase Exfoliation Yield High Areal Capacity Na-Ion Battery Anodes
Coleman, Jonathan (2023)The development of sodium ion batteries will require high-performance elec-trodes with very large areal capacity and reasonable rate performance. Although red phosphorus is a very promising electrode material, it has not ... -
Collagen/pristine graphene as an electroconductive interface material for neuronal medical device applications
Coleman, Jonathan; Caldwell, Maeve (2022)The growing clinical demand for electrical stimulation-based therapies requires the development of novel conductive biomaterials that balance conductivity, biocompatibility, and mechanical performance. Traditional conductive ... -
Cyclic production of biocompatible few-layer graphene ink with in-line shear-mixing for inkjet-printed electrodes and Li-ion energy storage
Coleman, Jonathan; Carey, Tian (2022)The scalable production of two-dimensional (2D) materials is needed to accelerate their adoption to industry. In this work, we present a low-cost in-line and enclosed process of exfoliation based on high-shear mixing to ... -
Dependence of Photocurrent Enhancements in Quantum Dot (QD)-Sensitized MoS2 Devices on MoS2 Film Properties
Mc Evoy, Niall; Coleman, Jonathan; Mc Closkey, David; Bradley, Louise; Duesberg, Georg (2018)This report demonstrates highly efficient nonradiative energy transfer (NRET) from alloyed CdSeS/ZnS semiconductor nanocrystal quantum dots (QDs) to MoS2 films of varying layer thicknesses, including pristine monolayers, ... -
Developing models to fit capacity-rate data in battery systems
Coleman, Jonathan (2020)Analyzing rate performance data in battery electrodes is greatly facilitated by access to simple analytical models. Here, we describe a number of simple equations for fitting capacity–rate data. These equations output fit ... -
Edge and confinement effects allow in situ measurement of size and thickness of liquid-exfoliated nanosheets
Mc Closkey, David; Nicolosi, Valeria; Duesberg, Georg; Donegan, John; Mc Evoy, Niall; Coleman, Jonathan (2014)Two-dimensional nanomaterials such as MoS2 are of great interest both because of their novel physical properties and their applications potential. Liquid exfoliation, an important production method, is limited by our ... -
The Effect of Network Formation on the Mechanical Properties of 1D:2D Nano:Nano Composites
Coleman, Jonathan (2018)Mixtures of 1D carbon nanotubes and 2D nanosheets are important in electrochemical applications where the nanosheets are the active material, while the nanotubes provide electrical conductivity and mechanical reinforcement. ... -
The Effect of Surfactant Choice and Concentration on the Dimensions and Yield of Liquid Phase Exfoliated Nanosheets
Coleman, Jonathan; Griffin, Aideen; Nisi, Katharina; Pepper, Joshua; Harvey, Andrew; Szydłowska, Beata M.; Backes, Claudia (2020)Liquid-phase exfoliation has progressed in recent years to become a common method for production of 2D materials. During exfoliation, surfactants can be used to stabilize the nanosheets against reaggregation. Here, using ... -
Effect of the Gate Volume on the Performance of Printed Nanosheet Network-Based Transistors
Coleman, Jonathan (2020)Demonstration of high-performance, all-printed transistors fabricated only from networks of two-dimensional nanosheets would represent a significant advance in printed electronics. However, such devices have only been shown ... -
The electrical conductivity of solution-processed nanosheet networks
Coleman, Jonathan (2021)Solution-processed networks of 2D nanosheets are promising for a range of applications in the field of printed electronics. However, the electrical performance of these networks represented for example by the mobility – ... -
Electronic Polarizability as the Fundamental Variable in the Dielectric Properties of Two-Dimensional Materials
Coleman, Jonathan (2020)The dielectric constant, which defines the polarization of the media, is a key quantity in condensed matter. It determines several electronic and optoelectronic properties important for a plethora of modern technologies ... -
Equipartition of Energy Defines the Size-Thickness Relationship in Liquid-Exfoliated Nanosheets.
Coleman, Jonathan; O'Regan, David (2019)Liquid phase exfoliation is a commonly used method to produce 2D nanosheets from a range of layered crystals. However, such nanosheets display broad size and thickness distributions and correlations between area and ... -
Exfoliablity, magnetism, energy storage and stability of metal thiophosphate nanosheets made in liquid medium
Coleman, Jonathan (2023)The family of antiferromagnetic layered metal hexathiohypo diphosphates, M2P2S6 represents a versatile class of materials, particularly interesting for fundamental studies on magnetic properties in low dimensional structures, ... -
Exfoliation of 2D materials by high shear mixing
Coleman, Jonathan; Mc Evoy, Niall (2019)While it has been demonstrated that large scale liquid exfoliation of graphene is possible using high-shear exfoliation, it has not yet been shown to be applicable to a broader range of layered materials. In addition, it ...