2D Materials: Preparation, Properties, Modeling & Applications: Carbon Related Materials - Processing, Properties & Applications II
Sponsored by: TMS Functional Materials Division, TMS: Thin Films and Interfaces Committee
Program Organizers: Nuggehalli Ravindra, New Jersey Institute of Technology; Madan Dubey, US Army Research Laboratory; Sufian Abedrabbo, Khalifa University; Hesam Askari, University Of Rochester; Gerald Ferblantier, University of Strasbourg - IUT LP / ICube Laboratory - CNRS; Ramana Chintalapalle, University of Texas at El Paso; Joshua Young, New Jersey Institute of Technology; Adele Carrado, University of Strasbourg; Karine Mougin, Cnrs, Is2m; Heinz Palkowski, Clausthal University of Technology
Monday 2:00 PM
March 20, 2023
Room: Aqua AB
Location: Hilton
Session Chair: Hesam Askari, University of Rochester; Sufian Abedrabbo, Khalifa University
2:00 PM Introductory Comments
2:05 PM Invited
Processing Approaches for the Efficient Liquid Exfoliation of Graphene Transport Enhancement between Subsequent Flakes: Konstantinos Sierros1; Harrison Loh1; 1West Virginia University
The production of graphene from graphite is a long-lasting scientific challenge, hindering the use of the material in emerging applications. Particularly, the isolation of graphene flakes from either raw graphite or waste/excess biomass is attractive given the abundance of natural graphite and the appeal of up-valuing sustainable precursor sources. The use of liquid exfoliation (shear mixing or sonication) has been the primary means of extracting graphene from these precursors. However, this approach has disadvantages such as incomplete & inefficient exfoliation requiring centrifuge post-processing to isolate the thinnest flakes. Liquid exfoliation also produces flakes of small sizes, reducing the effectiveness of their use in devices larger than the particle due to junction tunneling resistance between the flakes. In this talk we will discuss our group's work and current advances in high-quality graphene flake isolation through liquid exfoliation processes along with strategies for bridging flakes and tailoring transport throughout deposited flake networks.
2:30 PM Invited
Q-Carbon Nanoballs and Diamond Nanodots: Nayna Khosla1; Jagdish Narayan1; 1North Carolina State University
This talk highlights the ultrafast laser processing of 3D Q-carbon nanoballs and diamond nanodots. Q-carbon nanoballs are self-organized in the form of rings and strings and exhibit robust room-temperature ferromagnetism. These balls can be coated with drugs for drug target applications. The diamond film fabricated by this process is epitaxial, comprising of highly dense packing of these nanodiamond crystallites with defined edges. The diamond nanodots can be doped with N and Si to form NV and SV color centers, which is essential for quantum computing and nanosensing. These materials can be processed with wafer-scale integration for next-generation solid-state device applications.
2:50 PM
Synthesis and Implications of Antibacterial Graphene Coating on Nickel Substrates using Pulsed Laser Deposition: Ramesh Devadig1; Venkata A.S. Kandadai1; Bharat Jasthi1; Venkataramana Gadhamshetty1; 1South Dakota School of Mines and Tech
Despite excellent barrier properties, pristine graphene coating doesn’t offer intrinsic antibacterial properties which play a vital role in bacterial adhesion subsequently causing biocorrosion. Here, we propose silver-coated graphene multilayers on nickel surfaces as an antibacterial coating that can effectively serve as corrosion-resistant and also prevents the onset of microbial adhesion. This study employs Desulfovibrio Alaskensis G-20 as a model organism and synthesis of the silver coating through pulse laser deposition on different nickel surfaces as a technologically relevant substrate against biocorrosion studies. Tafel analysis indicated ~2-fold and a 4-fold decrease in corrosion rate in silver-coated nickel and multilayer graphene nickel respectively for microbial exposure for 30 days. Observations from SEM and CLSM images suggested a significant reduction of microbial attachment in silver-coated samples thus contributing to the corrosion resistance mechanisms. The findings of these studies can be effectively utilized in biofilm prevention and establishing corrosion-resistant coating for various industry-specific applications.
3:10 PM Invited
Ultra-long Carbon Nano Tube
Changing the World of Materials: Shuki Yeshurun1; 1Tortech Nano Fibers
Tortech (Israel) and QFlo (UK) are startup companies with unique nano technology process’ based on a novel Cambridge university (UK) IP. The zero-emission process uses Methane gas from natural sources or from landfill producing to produce Ultra-Long Carbon Nanotubes (ULCNT) non-woven mats, ULCNT fibers, dispersions and pure Hydrogen (H2) gas. The ULCNT have unique properties such as: light weight, high specific electrical conductivity, thermal conductivity, chemical stable, high strength and high toughness. These unique properties open a wide range of new opportunities in the world of materials such as “smart” textile, high EMI shielding for 5G communication, construction (replacing for example steel reinforcing bars), water and air filters (including corona viruses), energy (electrodes and additives for fast charge of electrical vehicle batteries), de-icing for aviation, hybrid composites for automotive, sport goods, heat dissipation devices, fire barrier, health monitoring and many more.
3:35 PM Break
3:50 PM Invited
“Temperature”, a Key Parameter for Graphene Exfoliation In Water: Iakovos Tzanakis1; Amanpreet Kaur1; Dmitry Eskin1; 1Oxford Brookes University
Graphene dispersions in aqueous solutions are highly desirable for various applications such as biomedicines, membranes, coatings, inkjet printing and more. Recent novel research has focussed on developing a green approach for scalable production of graphene. However, one important parameter which is often neglected is the bulk temperature of the processing liquid. Herein, we demonstrate sonication-assisted liquid phase exfoliation of graphite powder to produce graphene nanosheets in pure water at different temperatures ranging from 10-60 oC for two different optimized input generator powers at 50% and 60%. Preliminary UV-Vis analysis revealed exfoliation, while stability and uniformity of dispersions were improved with increasing temperature. Specifically, optimal temperature conditions for graphene exfoliation in water were found to be in the range of 40-60 oC. We further confirm the successful exfoliation of high-quality graphene sheets in the optimized sample with the aid of characterisation techniques such as Raman, TEM and AFM.
4:15 PM
An Overview of Graphene-based Nanomaterials in Electronic Skin Biosensing
: Raphael Ekun1; Eribe Jonathan2; Okeke Emmanuel3; Best Atoe4; Ikhazuagbe Ifijen5; 1 Cyprus International University; 2Benson Idahosa University; 3University of Benin; 4Worldwide Healthcare, Nigeria; 5Rubber Research Institute of Nigeria
Skin, the largest organ in the body, is capable of detecting and reacting to a variety of external stimuli. The development of electronic skin (E-skin) for the imitation of the human sensory system has recently gained a lot of attention due to its potential applications in wearable human health monitoring and care systems, advanced robotics, artificial intelligence, and human-machine interfaces. Electronic skin sensing devices have accelerated due to graphene's capacity to achieve unique functionality using a variety of assembly processable processes. Consequently, the use of graphene and the components that make it up in biomedicine is growing. This review focuses on high-performance electronic skin that has been developed for biosensing applications through a number of research projects. Additionally, a brief discussion of electronic skin's production processes, research obstacles, and future prospects was included.
4:35 PM
Utilizations of Graphene-based Nanomaterials for the Detection and Treatment of Mycobacterium Tuberculosis: Nyaknno U. Udokpoh1; Jacob Jacob2; Ukeme Archibong2; Gregory Onaiwu3; Ikhazuagbe Ifijen1; 1Rubber Research Institute of Nigeria; 2University of Benin; 3Department of Chemistry, Benson Idahosa University
In low-income countries, where the infection is more widespread and varied, tuberculosis (TB) is still one of the most lethal infectious diseases in the world. In recent years, there has been a significant growth in the number of Mycobacterium tuberculosis (Mtb) strains that are resistant to first-line anti-TB drugs, which has prompted the development of novel therapies. This work presents a brief overview of recent advances in the use of graphene-based nanoparticles for the detection of Mycobacterium tuberculosis. Graphene-based nanomaterials alone or in combination with presently available anti-TB drugs were also investigated as a potential treatment for tuberculosis (NMTs). In the future, we predict that graphene-based nanomaterials will lead the way in the early identification of Mycobacterium tuberculosis and the fight against the spread of Mtb. However, toxicity and biodegradation studies need to be carried out before they can be applied in therapeutic settings.
4:55 PM
Heterostraining and Moiré Reconstruction in Bilayer Graphene: Aditya Dey1; Shoieb Chowdhury1; Hesam Askari1; 1University of Rochester
Control over the interlayer rotation in bilayer-2D materials enables engineering a Moiré-superlattice that features unprecedented physical phenomena. In Twisted-Bilayer-Graphene(TBG), combining this with strain opens an avenue to further tune their properties. Despite this combination, there’s a quest for optimized approaches to obtain such properties. Here, we investigate a route to obtain similar behavior in heterostrained TBGs, obtained independently by straining bilayer-graphene heterogeneously without the need for twist. We perform atomistic-simulations to employ hetero-strain individually in BLG and TBG to compare their properties. Uniaxial heterostraining bilayer-graphene results in Moire-superlattice, that’s correlated to TBGs with a definitive twist-angle. Assessing the opto-electrical properties of strained Moire-cell with a separately strained TBG system yields similitude in their physical behavior. Thus, allowing one degree-of-freedom, i.e., strain, we achieve similar behavior obtained using both twisting and straining bilayer-graphene. This work demonstrates a strategy to help the experimental methods applied for achieving properties deduced from strain-engineered TBGs.
5:15 PM
Novel Approach to Produce Thick CNT Baseduckypaper for Shielding Applications: Syed Sajl1; 1Khalifa University
Bucky papers with thickness of more 400 µm are very important for many applications such as Radar Absorbing Materials (RAM), Electromagnetic interference shielding (EMI), supercapacitors and lithium-ion battery (LIB). CNT Buckypaper is a thin sheet made from an aggregate of carbon nanotubes, literature studies show the thickness of single bucky paper produced by film casting method is in the range of 40-100 μm1. This study shares the preliminary work carried as an attempt to produce super-thick bucky papers by film casting process. Testing of the samples for EMI shielding properties is conducted. We have observed an improvement in EMI SE by obtaining a thick Buckypaper.