Angstrom-Size Defect Creation and Ionic Transport through Pores in Single-Layer MoS2

Nano Letters
Jothi Priyanka ThiruramanMarija Drndić

Abstract

Atomic-defect engineering in thin membranes provides opportunities for ionic and molecular filtration and analysis. While molecular-dynamics (MD) calculations have been used to model conductance through atomic vacancies, corresponding experiments are lacking. We create sub-nanometer vacancies in suspended single-layer molybdenum disulfide (MoS2) via Ga+ ion irradiation, producing membranes containing ∼300 to 1200 pores with average and maximum diameters of ∼0.5 and ∼1 nm, respectively. Vacancies exhibit missing Mo and S atoms, as shown by aberration-corrected scanning transmission electron microscopy (AC-STEM). The longitudinal acoustic band and defect-related photoluminescence were observed in Raman and photoluminescence spectroscopy, respectively. As the irradiation dose is increased, the median vacancy area remains roughly constant, while the number of vacancies (pores) increases. Ionic current versus voltage is nonlinear and conductance is comparable to that of ∼1 nm diameter single MoS2 pores, proving that the smaller pores in the distribution display negligible conductance. Consistently, MD simulations show that pores with diameters <0.6 nm are almost impermeable to ionic flow. Atomic pore structure and geometry, studied ...Continue Reading

References

Feb 1, 1968·The Journal of General Physiology·B Hille
Oct 11, 2008·Nature Biotechnology·Daniel BrantonJeffery A Schloss
Mar 17, 2010·Nano Letters·Andrea SplendianiFeng Wang
Aug 12, 2010·Nano Letters·Christopher A MerchantMarija Drndić
Jan 7, 2011·Nature·Pinshane Y HuangDavid A Muller
Jun 7, 2012·Nano Letters·David Cohen-Tanugi, Jeffrey C Grossman
Sep 18, 2012·Nanoscale·Yu-Chuan LinLain-Jong Li
Dec 4, 2012·Nature Materials·Kin Fai MakJie Shan
Nov 22, 2013·Scientific Reports·Zhi ZhouXinghua Lu
Mar 24, 2015·Nature Nanotechnology·Sumedh P SurwadeShannon M Mahurin
Apr 29, 2015·Nano Letters·Sean C O'HernRohit Karnik
Jun 3, 2015·ACS Nano·Julio A Rodríguez-ManzoMarija Drndić
Oct 16, 2015·Nature Communications·Mohammad HeiranianNarayana R Aluru
Mar 22, 2016·ACS Nano·William M ParkinMarija Drndić
Mar 29, 2016·Nature Materials·Jiandong FengAleksandra Radenovic
Apr 23, 2016·Nature Communications·Ryan C RollingsJene A Golovchenko
Jul 15, 2016·Nature·Jiandong FengAleksandra Radenovic
Jan 27, 2017·ACS Nano·Gopinath DandaMarija Drndić
Feb 22, 2017·Scientific Reports·Jerome T MlackMarija Drndić

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Citations

Jul 22, 2020·Chemical Society Reviews·Liping Zhang, Mietek Jaroniec
Jun 14, 2020·Nature Nanotechnology·Razi EpszteinMenachem Elimelech
Nov 28, 2018·Nature Materials·A FangA Smolyanitsky
Feb 24, 2021·Physical Chemistry Chemical Physics : PCCP·Sanjin MarionAleksandra Radenovic
Oct 16, 2018·Current Opinion in Biotechnology·Gopinath Danda, Marija Drndić
Mar 9, 2021·ACS Applied Materials & Interfaces·Shihao Su, Jianming Xue
Dec 24, 2020·Entropy·Andrey ChernevAleksandra Radenovic
Apr 13, 2021·The Journal of Physical Chemistry. C, Nanomaterials and Interfaces·Liam H IsherwoodAliaksandr Baidak
Apr 28, 2021·Ultramicroscopy·Joshua ChenMarija Drndić
May 22, 2021·Nanoscale·Ravalika SajjaBoya Radha
Jul 7, 2021·ACS Sensors·David J NiedzwieckiMarija Drndić
Aug 18, 2018·ACS Applied Materials & Interfaces·Silvan KretschmerArkady V Krasheninnikov
Apr 9, 2020·ACS Applied Materials & Interfaces·Yuanzhen LiChao Wu
Mar 21, 2020·ACS Nano·Jothi Priyanka ThiruramanMarija Drndić
Aug 10, 2019·ACS Nano·Jieun YangManish Chhowalla
Jul 16, 2019·ACS Applied Materials & Interfaces·Jian-An KeSilvija Gradečak
Aug 20, 2019·ACS Nano·Srinivas V MandyamAlan T Charlie Johnson
May 8, 2020·ACS Nano·Paul Masih Das, Marija Drndić
Aug 14, 2020·ACS Nano·Jothi Priyanka ThiruramanMarija Drndić
Feb 16, 2019·The Journal of Physical Chemistry. B·Adrien NicolaïPatrick Senet
Aug 21, 2020·ACS Applied Materials & Interfaces·Sadegh GhaderzadehArkady V Krasheninnikov
Oct 30, 2021·Small·Daniil NaberezhnyiPetr Dementyev

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