Reflective Phase-Contrast for High-Contrast Imaging of van der Waals Heterostructure

Kim, Ha-Leem; Wang, Feng

doi:10.1021/acs.nanolett.3c00252

Reflective Phase-Contrast for High-Contrast Imaging of van der Waals Heterostructure

Journal Article · Wed Mar 15 00:00:00 EDT 2023 · Nano Letters

DOI:https://doi.org/10.1021/acs.nanolett.3c00252· OSTI ID:2325981

^[1]; Wang, Feng ^[1]

Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Optical microscopy plays a critical role in the fabrication of two-dimensional (2D) van der Waals heterostructures. An outstanding challenge in conventional microscopy is to visualize transparent 2D layers as well as embedded monolayers in a stacked heterostructure with high optical contrast. Phase-contrast microscopy, first developed by Frits Zernike in the 1930s, leverages the interference effect between specimen scattered light and background light to increase the contrast of transparent specimens. Such phase-contrast microscopy, always in a transmission configuration, revolutionized the study of transparent cellular structures in biology. Here, we develop a versatile reflective phase-contrast microscopy for imaging 2D heterostructures. We employ two spatial light modulators to flexibly control the intensity and phase of the illumination and the reflected light. This reflective phase-contrast microscopy achieves unprecedented high contrast for imaging a transparent 2D monolayer. In conclusion, it also enables direct observation of 2D monolayers embedded inside a thick heterostructure that are "invisible" in conventional microscopy.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 2325981

Journal Information:: Nano Letters, Journal Name: Nano Letters Journal Issue: 7 Vol. 23; ISSN 1530-6984

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

References (30)

Atomically Thin Quantum Spin Hall Insulators Lodge, Michael S.; Yang, Shengyuan A.; Mukherjee, Shantanu Advanced Materials, Vol. 33, Issue 22 https://doi.org/10.1002/adma.202008029	journal	April 2021
Hunting for Monolayer Boron Nitride: Optical and Raman Signatures Gorbachev, Roman V.; Riaz, Ibtsam; Nair, Rahul R. Small, Vol. 7, Issue 4, p. 465-468 https://doi.org/10.1002/smll.201001628	journal	January 2011
Van der Waals heterostructures and devices Liu, Yuan; Weiss, Nathan O.; Duan, Xidong Nature Reviews Materials, Vol. 1, Issue 9 https://doi.org/10.1038/natrevmats.2016.42	journal	July 2016
Discovery of intrinsic ferromagnetism in two-dimensional van der Waals crystals Gong, Cheng; Li, Lin; Li, Zhenglu Nature, Vol. 546, Issue 7657 https://doi.org/10.1038/nature22060	journal	April 2017
Layer-dependent ferromagnetism in a van der Waals crystal down to the monolayer limit Huang, Bevin; Clark, Genevieve; Navarro-Moratalla, Efrén Nature, Vol. 546, Issue 7657 https://doi.org/10.1038/nature22391	journal	June 2017
Unconventional superconductivity in magic-angle graphene superlattices Cao, Yuan; Fatemi, Valla; Fang, Shiang Nature, Vol. 556, Issue 7699 https://doi.org/10.1038/nature26160	journal	March 2018
The rise of graphene Geim, A. K.; Novoselov, K. S. Nature Materials, Vol. 6, Issue 3, p. 183-191 https://doi.org/10.1038/nmat1849	journal	March 2007
Excitonic superfluid phase in double bilayer graphene Li, J. I. A.; Taniguchi, T.; Watanabe, K. Nature Physics, Vol. 13, Issue 8 https://doi.org/10.1038/nphys4140	journal	May 2017
Quantum spin Hall state in monolayer 1T'-WTe2 Tang, Shujie; Zhang, Chaofan; Wong, Dillon Nature Physics, Vol. 13, Issue 7 https://doi.org/10.1038/nphys4174	journal	June 2017
Two-dimensional itinerant ferromagnetism in atomically thin Fe3GeTe2 Fei, Zaiyao; Huang, Bevin; Malinowski, Paul Nature Materials, Vol. 17, Issue 9 https://doi.org/10.1038/s41563-018-0149-7	journal	August 2018
Correlated electronic phases in twisted bilayer transition metal dichalcogenides Wang, Lei; Shih, En-Min; Ghiotto, Augusto Nature Materials, Vol. 19, Issue 8 https://doi.org/10.1038/s41563-020-0708-6	journal	June 2020
Stripe phases in WSe2/WS2 moiré superlattices Jin, Chenhao; Tao, Zui; Li, Tingxin Nature Materials https://doi.org/10.1038/s41563-021-00959-8	journal	March 2021
Correlated insulating states at fractional fillings of the WS2/WSe2 moiré lattice Huang, Xiong; Wang, Tianmeng; Miao, Shengnan Nature Physics https://doi.org/10.1038/s41567-021-01171-w	journal	February 2021
Dipolar excitonic insulator in a moiré lattice Gu, Jie; Ma, Liguo; Liu, Song Nature Physics, Vol. 18, Issue 4 https://doi.org/10.1038/s41567-022-01532-z	journal	March 2022
Correlated interlayer exciton insulator in heterostructures of monolayer WSe2 and moiré WS2/WSe2 Zhang, Zuocheng; Regan, Emma C.; Wang, Danqing Nature Physics, Vol. 18, Issue 10 https://doi.org/10.1038/s41567-022-01702-z	journal	August 2022
Emerging exciton physics in transition metal dichalcogenide heterobilayers Regan, Emma C.; Wang, Danqing; Paik, Eunice Y. Nature Reviews Materials, Vol. 7, Issue 10 https://doi.org/10.1038/s41578-022-00440-1	journal	May 2022
Superconductors, orbital magnets and correlated states in magic-angle bilayer graphene Lu, Xiaobo; Stepanov, Petr; Yang, Wei Nature, Vol. 574, Issue 7780 https://doi.org/10.1038/s41586-019-1695-0	journal	October 2019
Tunable correlated Chern insulator and ferromagnetism in a moiré superlattice Chen, Guorui; Sharpe, Aaron L.; Fox, Eli J. Nature, Vol. 579, Issue 7797 https://doi.org/10.1038/s41586-020-2049-7	journal	March 2020
Mott and generalized Wigner crystal states in WSe2/WS2 moiré superlattices Regan, Emma C.; Wang, Danqing; Jin, Chenhao Nature, Vol. 579, Issue 7799 https://doi.org/10.1038/s41586-020-2092-4	journal	March 2020
Signatures of Wigner crystal of electrons in a monolayer semiconductor Smoleński, Tomasz; Dolgirev, Pavel E.; Kuhlenkamp, Clemens Nature, Vol. 595, Issue 7865 https://doi.org/10.1038/s41586-021-03590-4	journal	June 2021
Imaging two-dimensional generalized Wigner crystals Li, Hongyuan; Li, Shaowei; Regan, Emma C. Nature, Vol. 597, Issue 7878 https://doi.org/10.1038/s41586-021-03874-9	journal	September 2021
Superconductivity in rhombohedral trilayer graphene Zhou, Haoxin; Xie, Tian; Taniguchi, Takashi Nature, Vol. 598, Issue 7881 https://doi.org/10.1038/s41586-021-03926-0	journal	September 2021
Fractional Chern insulators in magic-angle twisted bilayer graphene Xie, Yonglong; Pierce, Andrew T.; Park, Jeong Min Nature, Vol. 600, Issue 7889 https://doi.org/10.1038/s41586-021-04002-3	journal	December 2021
Evidence for unconventional superconductivity in twisted bilayer graphene Oh, Myungchul; Nuckolls, Kevin P.; Wong, Dillon Nature, Vol. 600, Issue 7888 https://doi.org/10.1038/s41586-021-04121-x	journal	October 2021
Quantitative optical mapping of two-dimensional materials Jessen, Bjarke S.; Whelan, Patrick R.; Mackenzie, David M. A. Scientific Reports, Vol. 8, Issue 1 https://doi.org/10.1038/s41598-018-23922-1	journal	April 2018
Making graphene visible Blake, P.; Hill, E. W.; Castro Neto, A. H. Applied Physics Letters, Vol. 91, Issue 6 https://doi.org/10.1063/1.2768624	journal	August 2007
How I Discovered Phase Contrast Zernike, F. Science, Vol. 121, Issue 3141 https://doi.org/10.1126/science.121.3141.345	journal	March 1955
Observation of the quantum spin Hall effect up to 100 kelvin in a monolayer crystal Wu, Sanfeng; Fatemi, Valla; Gibson, Quinn D. Science, Vol. 359, Issue 6371 https://doi.org/10.1126/science.aan6003	journal	January 2018
Observation of fractional Chern insulators in a van der Waals heterostructure Spanton, Eric M.; Zibrov, Alexander A.; Zhou, Haoxin Science, Vol. 360, Issue 6384 https://doi.org/10.1126/science.aan8458	journal	March 2018
Beyond Graphene: Progress in Novel Two-Dimensional Materials and van der Waals Solids Das, Saptarshi; Robinson, Joshua A.; Dubey, Madan Annual Review of Materials Research, Vol. 45, Issue 1 https://doi.org/10.1146/annurev-matsci-070214-021034	journal	July 2015

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