Interference Provides Clarity: Direct Observation of 2D Materials at Fluid–Fluid Interfaces

Goggin, David M.; Zhang, Hanyu; Miller, Elisa M.; Samaniuk, Joseph R.

doi:10.1021/acsnano.9b07776

Title: Interference Provides Clarity: Direct Observation of 2D Materials at Fluid–Fluid Interfaces

Full Record
Other Related Research

Abstract

Monolayer particles of two-dimensional (2D) materials represent a scientifically and technologically interesting class of anisotropic particles with colloidal-scale lateral sizes but sub-nanometer thicknesses. This atomic-scale thickness leads to interesting phenomena that can be exploited in next-generation thin-film technologies, and fluid-fluid interfaces provide a potentially scalable platform to confine, assemble, and deposit functional thin films of 2D materials. However, directly observing how these materials interact and assemble into a given film morphology is experimentally challenging because of their sub-nanometer thicknesses. Here, we demonstrate the ability to directly observe graphene, molybdenum disulfide (MoS2), and hexagonal boron nitride (h-BN) particles at fluid-fluid interfaces using interference reflection microscopy (IRM). Monolayer MoS2 and graphene particles demonstrated >10% optical contrast at an air-water interface, which allowed us to quantitatively analyze in situ images of self-assembled MoS2 particles and to map trajectories of interacting graphene particles. Additionally, the Brownian motion of a graphene particle was tracked and analyzed in the context of passive microrheology theory for 2D particle probes. Our results demonstrate how IRM can be used to obtain quantitative spatiotemporal information regarding the self-assembly and dynamics of 2D materials at fluid-fluid interfaces. It will have a significant impact on our ability to investigate systems of atomicallymore »« less

Authors:

^[1];

^[2];

^[2]; Samaniuk, Joseph R. ^[1]

Colorado School of Mines, Golden, CO (United States)
National Renewable Energy Lab. (NREL), Golden, CO (United States)

Publication Date:: Tue Dec 10 00:00:00 EST 2019

Research Org.:: National Renewable Energy Lab. (NREL), Golden, CO (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1592391

Report Number(s):: NREL/JA-5900-74799
Journal ID: ISSN 1936-0851

Grant/Contract Number:: AC36-08GO28308

Resource Type:: Accepted Manuscript

Journal Name:: ACS Nano

Additional Journal Information:: Journal Volume: 14; Journal Issue: 1; Journal ID: ISSN 1936-0851

Publisher:: American Chemical Society (ACS)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 2D material; fluid-fluid interface; interference reflection microscopy; anisotropic particle; graphene; molybdenum disulfide; hexagonal boron nitride

Citation Formats


                    Goggin, David M., Zhang, Hanyu, Miller, Elisa M., and Samaniuk, Joseph R. Interference Provides Clarity: Direct Observation of 2D Materials at Fluid–Fluid Interfaces.  United States: N. p., 2019. 
Web.  doi:10.1021/acsnano.9b07776.

Copy to clipboard


                    Goggin, David M., Zhang, Hanyu, Miller, Elisa M., & Samaniuk, Joseph R. Interference Provides Clarity: Direct Observation of 2D Materials at Fluid–Fluid Interfaces.  United States.  https://doi.org/10.1021/acsnano.9b07776

Copy to clipboard


                    Goggin, David M., Zhang, Hanyu, Miller, Elisa M., and Samaniuk, Joseph R. Tue .  
"Interference Provides Clarity: Direct Observation of 2D Materials at Fluid–Fluid Interfaces".  United States.  https://doi.org/10.1021/acsnano.9b07776.  https://www.osti.gov/servlets/purl/1592391.

Copy to clipboard


                    
@article{osti_1592391,

  title        = {Interference Provides Clarity: Direct Observation of 2D Materials at Fluid–Fluid Interfaces},

  author       = {Goggin, David M. and Zhang, Hanyu and Miller, Elisa M. and Samaniuk, Joseph R.},

  abstractNote = {Monolayer particles of two-dimensional (2D) materials represent a scientifically and technologically interesting class of anisotropic particles with colloidal-scale lateral sizes but sub-nanometer thicknesses. This atomic-scale thickness leads to interesting phenomena that can be exploited in next-generation thin-film technologies, and fluid-fluid interfaces provide a potentially scalable platform to confine, assemble, and deposit functional thin films of 2D materials. However, directly observing how these materials interact and assemble into a given film morphology is experimentally challenging because of their sub-nanometer thicknesses. Here, we demonstrate the ability to directly observe graphene, molybdenum disulfide (MoS2), and hexagonal boron nitride (h-BN) particles at fluid-fluid interfaces using interference reflection microscopy (IRM). Monolayer MoS2 and graphene particles demonstrated >10% optical contrast at an air-water interface, which allowed us to quantitatively analyze in situ images of self-assembled MoS2 particles and to map trajectories of interacting graphene particles. Additionally, the Brownian motion of a graphene particle was tracked and analyzed in the context of passive microrheology theory for 2D particle probes. Our results demonstrate how IRM can be used to obtain quantitative spatiotemporal information regarding the self-assembly and dynamics of 2D materials at fluid-fluid interfaces. It will have a significant impact on our ability to investigate systems of atomically thin particles at fluid-fluid interfaces, an area that has fundamental scientific importance and materials science applications but has suffered from a lack of direct, in situ observation techniques.},

  doi          = {10.1021/acsnano.9b07776},

  journal      = {ACS Nano},

  number       = 1,

  volume       = 14,

  place        = {United States},

  year         = {Tue Dec 10 00:00:00 EST 2019},

  month        = {Tue Dec 10 00:00:00 EST 2019}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1021/acsnano.9b07776

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 8 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Extraordinary Slowing of Structural Dynamics in Thin Films of a Room Temperature Ionic Liquid

Journal Article Nishida, Jun ; Breen, John P. ; Wu, Boning ; ... - ACS Central Science

The role that interfaces play in the dynamics of liquids is a fundamental scientific problem with vast importance in technological applications. From material science to biology, e. g., batteries to cell membranes, liquid properties at interfaces are frequently determinant in the nature of chemical processes. For most liquids, like water, the influence of an interfaces falls off on a ~1 nm distance scale. Room temperature ionic liquids (RTILs) are a vast class of unusual liquids composed of complex cations and anions that are liquid salts at room temperature. They are unusual liquids with properties that can be finely tuned bymore »« less
Cited by 29
https://doi.org/10.1021/acscentsci.8b00353
Atomic-scale measurement of liquid metal wetting and flow

Technical Report Shinn, N D ; Daly, C ; Limary, R ; ...

The flow behavior of liquid metals at solid interfaces is critically important to successful welding, brazing, soldering and the synthesis of metal/ceramic composites. Continuum flow models frequently fail to reliably predict wetting behavior because they are based upon bulk fluid properties, rather than microscopic flow processes at the actual solid/liquid interface. Improved understanding of interfacial liquid flow is hindered by the paucity of experimental measurements at this microscopic level. This report describes a new approach, Acoustic Wave Damping (AWD), to measuring viscoelastic properties of liquid metal layers in the nanometer thickness regime. The AWD experiment measures the frequency response ofmore »« less
Controlled Fabrication of Quality ZnO NWs/CNTs and ZnO NWs/Gr Heterostructures via Direct Two-Step CVD Method

Journal Article Schaper, Nicholas ; Alameri, Dheyaa ; Kim, Yoosuk ; ... - Nanomaterials

A novel and advanced approach of growing zinc oxide nanowires (ZnO NWs) directly on single-walled carbon nanotubes (SWCNTs) and graphene (Gr) surfaces has been demonstrated through the successful formation of 1D–1D and 1D–2D heterostructure interfaces. The direct two-step chemical vapor deposition (CVD) method was utilized to ensure high-quality materials’ synthesis and scalable production of different architectures. Iron-based universal compound molecular ink was used as a catalyst in both processes (a) to form a monolayer of horizontally defined networks of SWCNTs interfaced with vertically oriented ZnO NWs and (b) to grow densely packed ZnO NWs directly on a graphene surface. Wemore »« less
https://doi.org/10.3390/nano11071836

Full Text Available
Proximity-Induced Superconductivity in Monolayer MoS₂

Journal Article Trainer, Daniel J. ; Wang, BaoKai ; Bobba, Fabrizio ; ... - ACS Nano

Proximity effects in superconducting normal (SN) material heterostructures with metals and semiconductors have long been observed and theoretically described in terms of Cooper pair wave functions and Andreev reflections. Whereas the semiconducting N-layer materials in the proximity experiments to date have been doped and tens of nanometers thick, we present here a proximity tunneling study involving a pristine single-layer transition-metal dichalcogenide film of MoS2 placed on top of a Pb thin film. Scanning tunneling microscopy and spectroscopy experiments together with parallel theoretical analysis based on electronic structure calculations and Green’s function modeling allow us to unveil a two-step process inmore »« less
Cited by 27
https://doi.org/10.1021/acsnano.9b07475

Full Text Available
Novel in situ mechanical testers to enable integrated metal surface micro-machines.

Technical Report Follstaedt, David Martin ; de Boer, Maarten Pieter ; Kotula, Paul Gabriel ; ...

The ability to integrate metal and semiconductor micro-systems to perform highly complex functions, such as RF-MEMS, will depend on developing freestanding metal structures that offer improved conductivity, reflectivity, and mechanical properties. Three issues have prevented the proliferation of these systems: (1) warpage of active components due to through-thickness stress gradients, (2) limited component lifetimes due to fatigue, and (3) low yield strength. To address these issues, we focus on developing and implementing techniques to enable the direct study of the stress and microstructural evolution during electrodeposition and mechanical loading. The study of stress during electrodeposition of metal thin films ismore »« less
https://doi.org/10.2172/876252

Full Text Available

Similar Records