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Direct Fabrication of Atomically Defined Pores in MXenes Using Feedback-Driven STEM

Journal Article · · Small Methods
 [1];  [2];  [3];  [1];  [4];  [5];  [1];  [4];  [2];  [1]
  1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
  2. Pennsylvania State Univ., University Park, PA (United States)
  3. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
  4. Drexel Univ., Philadelphia, PA (United States)
  5. Univ. of Tennessee, Knoxville, TN (United States)
Controlled fabrication of nanopores in 2D materials offer the means to create robust membranes needed for ion transport and nanofiltration. Techniques for creating nanopores have relied upon either plasma etching or direct irradiation; however, aberration-corrected scanning transmission electron microscopy (STEM) offers the advantage of combining a sub-Å sized electron beam for atomic manipulation along with atomic resolution imaging. Here, for this work, a method for automated nanopore fabrication is utilized with real-time atomic visualization to enhance the mechanistic understanding of beam-induced transformations. Additionally, an electron beam simulation technique, Electron-Beam Simulator (E-BeamSim) is developed to observe the atomic movements and interactions resulting from electron beam irradiation. Using the MXene Ti3C2Tx, the influence of temperature on nanopore fabrication is explored by tracking atomic transformations and find that at room temperature the electron beam irradiation induces random displacement and results in titanium pileups at the nanopore edge, which is confirmed by E-BeamSim. At elevated temperatures, after removal of the surface functional groups and with the increased mobility of atoms results in atomic transformations that lead to the selective removal of atoms layer by layer. This work can lead to the development of defect engineering techniques within functionalized MXene layers and other 2D materials.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
2372968
Alternate ID(s):
OSTI ID: 2367407
Journal Information:
Small Methods, Journal Name: Small Methods Journal Issue: 12 Vol. 8; ISSN 2366-9608
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (58)

2D Laminar Membranes for Selective Water and Ion Transport journal May 2019
Two-Dimensional Nanocrystals Produced by Exfoliation of Ti3AlC2 journal August 2011
Synthetic Two-Dimensional Materials: A New Paradigm of Membranes for Ultimate Separation journal May 2016
Extreme Ion‐Transport Inorganic 2D Membranes for Nanofluidic Applications journal April 2023
The Atomic Drill Bit: Precision Controlled Atomic Fabrication of 2D Materials journal February 2023
Two-Dimensional Materials for Beyond-Lithium-Ion Batteries journal March 2016
Two-Dimensional-Material Membranes: A New Family of High-Performance Separation Membranes journal July 2016
Atomic-Level Sculpting of Crystalline Oxides: Toward Bulk Nanofabrication with Single Atomic Plane Precision journal October 2015
Building Structures Atom by Atom via Electron Beam Manipulation journal August 2018
Recent advances in membrane-enabled water desalination by 2D frameworks: Graphene and beyond journal June 2022
Rise of 2D materials-based membranes for desalination journal August 2022
Fabrication of surface-charged MXene membrane and its application for water desalination journal April 2021
Manipulating low-dimensional materials down to the level of single atoms with electron irradiation journal September 2017
Variable voltage electron microscopy: Toward atom-by-atom fabrication in 2D materials journal April 2020
Formation of Defects in Two-Dimensional MoS 2 in the Transmission Electron Microscope at Electron Energies below the Knock-on Threshold: The Role of Electronic Excitations journal March 2020
Electron-Beam Manipulation of Silicon Dopants in Graphene journal June 2018
Why is Single-Layer MoS2 a More Energy Efficient Membrane for Water Desalination? journal June 2020
Modified MAX Phase Synthesis for Environmentally Stable and Highly Conductive Ti 3 C 2 MXene journal April 2021
DNA Detection with Single-Layer Ti3C2 MXene Nanopore journal March 2021
Machine Learning Assisted Screening of Two-Dimensional Materials for Water Desalination journal January 2022
Directing Matter: Toward Atomic-Scale 3D Nanofabrication journal May 2016
Atomistic-Scale Simulations of Defect Formation in Graphene under Noble Gas Ion Irradiation journal August 2016
Directed Atom-by-Atom Assembly of Dopants in Silicon journal May 2018
Single-Molecule Sensing Using Nanopores in Two-Dimensional Transition Metal Carbide (MXene) Membranes journal March 2019
The Rise of MXenes journal July 2019
Spatially Controlled Fabrication and Mechanisms of Atomically Thin Nanowell Patterns in Bilayer WS2 Using in Situ High Temperature Electron Microscopy journal December 2019
Ultrathin Two-Dimensional Inorganic Materials: New Opportunities for Solid State Nanochemistry journal December 2014
Assembling Nanowires from Mo−S Clusters and Effects of Iodine Doping on Electronic Structure journal August 2007
Selective Ionic Transport through Tunable Subnanometer Pores in Single-Layer Graphene Membranes journal February 2014
Correlating Atomic Structure and Transport in Suspended Graphene Nanoribbons journal June 2014
Atomic-Scale Structure of Mo 6 S 6 Nanowires journal November 2008
Two-Dimensional Transition Metal Carbides journal January 2012
Control of Radiation Damage in MoS 2 by Graphene Encapsulation journal October 2013
Fire up the atom forge journal November 2016
Valleytronics in 2D materials journal August 2016
2D metal carbides and nitrides (MXenes) for energy storage journal January 2017
Top–down fabrication of sub-nanometre semiconducting nanoribbons derived from molybdenum disulfide sheets journal April 2013
Flexible metallic nanowires with self-adaptive contacts to semiconducting transition-metal dichalcogenide monolayers journal April 2014
In situ edge engineering in two-dimensional transition metal dichalcogenides journal May 2018
In situ atomistic insight into the growth mechanisms of single layer 2D transition metal carbides journal June 2018
Control of MXenes’ electronic properties through termination and intercalation journal January 2019
Atom-by-atom fabrication with electron beams journal June 2019
Phase transitions in 2D materials journal April 2021
Double transition metal MXene (TixTa4−xC3) 2D materials as anodes for Li-ion batteries journal January 2021
Quantifying transmission electron microscopy irradiation effects using two-dimensional materials journal May 2019
Precision controlled atomic resolution scanning transmission electron microscopy using spiral scan pathways journal March 2017
First-principles simulation of local response in transition metal dichalcogenides under electron irradiation journal January 2018
Quantum theory of electronic excitation and sputtering by transmission electron microscopy journal January 2023
Direct atomic fabrication and dopant positioning in Si using electron beams with active real-time image-based feedback journal April 2018
Towards atomically precise manipulation of 2D nanostructures in the electron microscope journal September 2017
Beam-driven dynamics of aluminium dopants in graphene journal May 2022
Special points for Brillouin-zone integrations journal June 1976
Ab initiomolecular dynamics for liquid metals journal January 1993
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Two-Dimensional Transition Metal Dichalcogenides under Electron Irradiation: Defect Production and Doping journal July 2012
Engineering single-atom dynamics with electron irradiation journal May 2019
Dynamic scan control in STEM: spiral scans journal June 2016

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