• 3581 Citations
  • 23 h-Index
20052020
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Research Output 2005 2020

2020

Measurement of mixed mode interfacial strengths with cementitious materials

Tabatabaei, M., Dahi Taleghani, A. & Alem, N., Jan 2020, In : Engineering Fracture Mechanics. 223, 106739.

Research output: Contribution to journalArticle

Cements
Rocks
Steel
Shear strength
Strength of materials
2019

Atomic-scale measurement of polar entropy

Mukherjee, D., Prokhorenko, S., Miao, L., Wang, K., Bousquet, E., Gopalan, V. & Alem, N., Sep 3 2019, In : Physical Review B. 100, 10, 104102.

Research output: Contribution to journalArticle

Entropy
entropy
Niobium
niobium
Ferroelectric materials
1 Citation (Scopus)

Competing Polar and Antipolar Structures in the Ruddlesden-Popper Layered Perovskite Li2SrNb2O7

Uppuluri, R., Akamatsu, H., Sen Gupta, A., Wang, H., Brown, C. M., Agueda Lopez, K. E., Alem, N., Gopalan, V. & Mallouk, T. E., Jun 25 2019, In : Chemistry of Materials. 31, 12, p. 4418-4425 8 p.

Research output: Contribution to journalArticle

Perovskite
Antiferroelectric materials
Ferroelectricity
Neutron diffraction
Synchrotrons
9 Citations (Scopus)

Defect-Controlled Nucleation and Orientation of WSe 2 on hBN: A Route to Single-Crystal Epitaxial Monolayers

Zhang, X., Zhang, F., Wang, Y., Schulman, D. S., Zhang, T., Bansal, A., Alem, N., Das, S., Crespi, V. H., Terrones Maldonado, M. & Redwing, J. M., Mar 26 2019, In : ACS nano. 13, 3, p. 3341-3352 12 p.

Research output: Contribution to journalArticle

Monolayers
Nucleation
routes
Single crystals
nucleation

Economic nano-additive to improve cement sealing capability

Tabatabaei, M., Dahi Taleghani, A. & Alem, N., Jan 1 2019.

Research output: Contribution to conferencePaper

Cements
Economics
Nanoparticles
Crack initiation
Surface properties
1 Citation (Scopus)

Full orientation control of epitaxial MoS2 on hBN assisted by substrate defects

Zhang, F., Wang, Y., Erb, C., Wang, K., Moradifar, P., Crespi, V. H. & Alem, N., Apr 29 2019, In : Physical Review B. 99, 15, 155430.

Research output: Contribution to journalArticle

Point defects
Epitaxial growth
Defects
defects
Substrates
2 Citations (Scopus)

Impact of chemical composition on precipitate morphology in an additively manufactured nickel base superalloy

Zuback, J. S., Moradifar, P., Khayat, Z., Alem, N. & Palmer, T., Aug 25 2019, In : Journal of Alloys and Compounds. 798, p. 446-457 12 p.

Research output: Contribution to journalArticle

Titanium
Nickel
Superalloys
Precipitates
Iron

Large tetragonality and room temperature ferroelectricity in compressively strained CaTiO3 thin films

Haislmaier, R. C., Lu, Y., Lapano, J., Zhou, H., Alem, N., Sinnott, S. B., Engel-Herbert, R. & Gopalan, V., May 1 2019, In : APL Materials. 7, 5, 051104.

Research output: Contribution to journalArticle

Open Access
Ferroelectricity
Thin films
Ferroelectric materials
Polarization
Perovskite
3 Citations (Scopus)

Local Structure and Bonding of Carbon Nanothreads Probed by High-Resolution Transmission Electron Microscopy

Juhl, S. J., Wang, T., Vermilyea, B., Li, X., Crespi, V. H., Badding, J. V. & Alem, N., May 1 2019, In : Journal of the American Chemical Society. 141, 17, p. 6937-6945 9 p.

Research output: Contribution to journalArticle

High resolution electron microscopy
High resolution transmission electron microscopy
Transmission Electron Microscopy
Electron Microscopy
Electron Energy-Loss Spectroscopy
2 Citations (Scopus)

Multi-Step Topochemical Pathway to Metastable Mo2AlB2 and Related Two-Dimensional Nanosheet Heterostructures

Alameda, L. T., Lord, R. W., Barr, J. A., Moradifar, P., Metzger, Z. P., Steimle, B. C., Holder, C. F., Alem, N., Sinnott, S. B. & Schaak, R. E., Jul 10 2019, In : Journal of the American Chemical Society. 141, 27, p. 10852-10861 10 p.

Research output: Contribution to journalArticle

Nanosheets
Heterojunctions
Boron Compounds
Temperature
Borides
1 Citation (Scopus)

Synthesis of nanopolycrystalline mesoporous diamond from periodic mesoporous carbon: Mesoporosity increases with increasing synthesis pressure

Najiba, S., Juhl, S. J., Mandal, M., Liu, C., Durygin, A., Chen, J., Fei, Y., Alem, N. & Landskron, K., Mar 15 2019, In : Scripta Materialia. 162, p. 350-354 5 p.

Research output: Contribution to journalArticle

Diamond
Diamonds
Carbon
diamonds
porosity
2018
1 Citation (Scopus)

Advanced Synthesis of Na4Si24

Guerette, M., Strobel, T. A., Zhang, H., Juhl, S., Alem, N., Lokshin, K., Krishna, L. & Taylor, P. C., Jan 1 2018, In : MRS Advances. 3, 25, p. 1427-1433 7 p.

Research output: Contribution to journalArticle

Silicon
synthesis
Diamond
solar energy
silicon
20 Citations (Scopus)

Carbon nitride nanothread crystals derived from pyridine

Li, X., Wang, T., Duan, P., Baldini, M., Huang, H. T., Chen, B., Juhl, S. J., Koeplinger, D., Crespi, V. H., Schmidt-Rohr, K., Hoffmann, R., Alem, N., Guthrie, M., Zhang, X. & Badding, J. V., Apr 18 2018, In : Journal of the American Chemical Society. 140, 15, p. 4969-4972 4 p.

Research output: Contribution to journalArticle

Carbon nitride
Benzene
Pyridine
Carbon
Chemical Phenomena
3 Citations (Scopus)

Confined Chemical Fluid Deposition of Ferromagnetic Metalattices

Liu, Y., Kempinger, S., He, R., Day, T. D., Moradifar, P., Yu, S. Y., Russell, J. L., Torres, V. M., Xu, P., Mallouk, T. E., Mohney, S. E., Alem, N., Samarth, N. & Badding, J. V., Jan 10 2018, In : Nano letters. 18, 1, p. 546-552 7 p.

Research output: Contribution to journalArticle

Infiltration
infiltration
voids
templates
Nickel
2 Citations (Scopus)

Controlled growth and Atomic-scale Characterization of Two-dimensional hexagonal boron nitride crystals

Azizi, A., AlSaud, M. A. & Alem, N., Aug 1 2018, In : Journal of Crystal Growth. 496-497, p. 51-56 6 p.

Research output: Contribution to journalArticle

Boron nitride
boron nitrides
Crystals
crystals
Crystal atomic structure
41 Citations (Scopus)

Diffusion-Controlled Epitaxy of Large Area Coalesced WSe2 Monolayers on Sapphire

Zhang, X., Choudhury, T. H., Chubarov, M., Xiang, Y., Jariwala, B., Zhang, F., Alem, N., Wang, G. C., Robinson, J. A. & Redwing, J. M., Feb 14 2018, In : Nano letters. 18, 2, p. 1049-1056 8 p.

Research output: Contribution to journalArticle

Aluminum Oxide
Epitaxial growth
Sapphire
epitaxy
Monolayers
11 Citations (Scopus)

Etchant-free transfer of 2D nanostructures

Zhang, F., Erb, C., Runkle, L., Zhang, X. & Alem, N., Jan 1 2018, In : Nanotechnology. 29, 2, 025602.

Research output: Contribution to journalArticle

Nanostructures
Substrates
Organic Chemicals
Thin films
Crystals

Overlapping growth windows to build complex oxide superlattices

Haislmaier, R. C., Lapano, J., Yuan, Y., Stone, G., Dong, Y., Zhou, H., Alem, N. & Engel-Herbert, R., Nov 1 2018, In : APL Materials. 6, 11, 111104.

Research output: Contribution to journalArticle

Superlattices
Perovskite
Oxides
Fluxes
Titanium
5 Citations (Scopus)

Superior Electro-Oxidation and Corrosion Resistance of Monolayer Transition Metal Disulfides

Schulman, D. S., May-Rawding, D., Zhang, F., Buzzell, D., Alem, N. & Das, S., Jan 31 2018, In : ACS Applied Materials and Interfaces. 10, 4, p. 4285-4294 10 p.

Research output: Contribution to journalArticle

Electrooxidation
Oxidation resistance
Disulfides
Transition metals
Corrosion resistance
1 Citation (Scopus)

Synthesis and Properties of Single-Crystalline Na4Si24

Guerette, M., Ward, M. D., Lokshin, K. A., Wong, A. T., Zhang, H., Stefanoski, S., Kurakevych, O., Le Godec, Y., Juhl, S. J., Alem, N., Fei, Y. & Strobel, T. A., Dec 5 2018, In : Crystal Growth and Design. 18, 12, p. 7410-7418 9 p.

Research output: Contribution to journalArticle

Silicon
Diamond
Crystalline materials
Crystals
Diamonds
21 Citations (Scopus)

Topochemical Deintercalation of Al from MoAlB: Stepwise Etching Pathway, Layered Intergrowth Structures, and Two-Dimensional MBene

Alameda, L. T., Moradifar, P., Metzger, Z. P., Alem, N. & Schaak, R. E., Jul 18 2018, In : Journal of the American Chemical Society. 140, 28, p. 8833-8840 8 p.

Research output: Contribution to journalArticle

Etching
Stacking faults
Temperature
Monolayers
Boron Compounds
2017
25 Citations (Scopus)

Controlled synthesis of 2D transition metal dichalcogenides: From vertical to planar MoS2

Zhang, F., Momeni, K., AlSaud, M. A., Azizi, A., Hainey, M. F., Redwing, J. M., Chen, L. Q. & Alem, N., Jun 2017, In : 2D Materials. 4, 2, 025029.

Research output: Contribution to journalArticle

Transition metals
transition metals
synthesis
vertical orientation
Graphite
15 Citations (Scopus)

Defect Coupling and Sub-Angstrom Structural Distortions in W1-xMoxS2 Monolayers

Azizi, A., Wang, Y., Stone, G., Elias, A. L., Lin, Z., Terrones, M., Crespi, V. H. & Alem, N., May 10 2017, In : Nano letters. 17, 5, p. 2802-2808 7 p.

Research output: Contribution to journalArticle

Monolayers
Doping (additives)
Defects
transition metals
defects
39 Citations (Scopus)

High-Performance Polymers Sandwiched with Chemical Vapor Deposited Hexagonal Boron Nitrides as Scalable High-Temperature Dielectric Materials

Azizi, A., Gadinski, M. R., Li, Q., AlSaud, M. A., Wang, J., Wang, Y., Wang, B., Liu, F., Chen, L. Q., Alem, N. & Wang, Q., Sep 20 2017, In : Advanced Materials. 29, 35, 1701864.

Research output: Contribution to journalArticle

Polyetherimides
Boron nitride
Polymers
Vapors
Temperature
60 Citations (Scopus)

Low-temperature Synthesis of Heterostructures of Transition Metal Dichalcogenide Alloys (WxMo1-xS2) and Graphene with Superior Catalytic Performance for Hydrogen Evolution

Lei, Y., Pakhira, S., Fujisawa, K., Wang, X., Iyiola, O. O., Perea López, N., Laura Elías, A., Pulickal Rajukumar, L., Zhou, C., Kabius, B., Alem, N., Endo, M., Lv, R., Mendoza-Cortes, J. L. & Terrones, M., May 23 2017, In : ACS nano. 11, 5, p. 5103-5112 10 p.

Research output: Contribution to journalArticle

Transition metal alloys
Graphite
Graphene
Heterojunctions
Hydrogen
21 Citations (Scopus)

Polar Oxides without Inversion Symmetry through Vacancy and Chemical Order

Young, J., Moon, E. J., Mukherjee, D., Stone, G., Gopalan, V., Alem, N., May, S. J. & Rondinelli, J. M., Feb 22 2017, In : Journal of the American Chemical Society. 139, 7, p. 2833-2841 9 p.

Research output: Contribution to journalArticle

Crystal symmetry
Oxides
Vacancies
Transition metals
Anions
2016
12 Citations (Scopus)

26.5 Terahertz electrically triggered RF switch on epitaxial VO2-on-Sapphire (VOS) wafer

Madan, H., Zhang, H. T., Jerry, M., Mukherjee, D., Alem, N., Engel-Herbert, R. & Datta, S., Feb 16 2016, 2015 IEEE International Electron Devices Meeting, IEDM 2015. Institute of Electrical and Electronics Engineers Inc., Vol. 2016-February. p. 9.3.1-9.3.4 7409661

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Aluminum Oxide
Sapphire
sapphire
switches
Switches
7 Citations (Scopus)

Atomic scale imaging of competing polar states in a Ruddlesden-Popper layered oxide

Stone, G., Ophus, C., Birol, T., Ciston, J., Lee, C. H., Wang, K., Fennie, C. J., Schlom, D. G., Alem, N. & Gopalan, V., Aug 31 2016, In : Nature communications. 7, 12572.

Research output: Contribution to journalArticle

Scanning Transmission Electron Microscopy
Oxides
Electron Microscopy
topology
Tuning
7 Citations (Scopus)

Creating Ruddlesden-Popper phases by hybrid molecular beam epitaxy

Haislmaier, R. C., Stone, G., Alem, N. & Engel-Herbert, R., Jul 25 2016, In : Applied Physics Letters. 109, 4, 043102.

Research output: Contribution to journalArticle

molecular beam epitaxy
high energy electrons
electron diffraction
titanium
cells
15 Citations (Scopus)

Influence of Carbon in Metalorganic Chemical Vapor Deposition of Few-Layer WSe2 Thin Films

Zhang, X., Al Balushi, Z. Y., Zhang, F., Choudhury, T. H., Eichfeld, S. M., Alem, N., Jackson, T. N., Robinson, J. A. & Redwing, J. M., Dec 1 2016, In : Journal of Electronic Materials. 45, 12, p. 6273-6279 7 p.

Research output: Contribution to journalArticle

Graphite
Metallorganic chemical vapor deposition
Graphene
metalorganic chemical vapor deposition
Carbon
20 Citations (Scopus)

Spontaneous Formation of Atomically Thin Stripes in Transition Metal Dichalcogenide Monolayers

Azizi, A., Wang, Y., Lin, Z., Wang, K., Elias, A. L., Terrones, M., Crespi, V. H. & Alem, N., Nov 9 2016, In : Nano letters. 16, 11, p. 6982-6987 6 p.

Research output: Contribution to journalArticle

Transition metals
Monolayers
transition metals
Electronic properties
Metals
2015
147 Citations (Scopus)

Benzene-derived carbon nanothreads

Fitzgibbons, T. C., Guthrie, M., Xu, E. S., Crespi, V. H., Davidowski, S. K., Cody, G. D., Alem, N. & Badding, J. V., Jan 1 2015, In : Nature Materials. 14, 1, p. 43-47 5 p.

Research output: Contribution to journalArticle

Benzene
Nanostructured materials
Carbon
benzene
carbon
84 Citations (Scopus)

Freestanding van der waals heterostructures of graphene and transition metal dichalcogenides

Azizi, A., Eichfeld, S., Geschwind, G., Zhang, K., Jiang, B., Mukherjee, D., Hossain, L., Piasecki, A. F., Kabius, B. C., Robinson, J. A. & Alem, N., May 26 2015, In : ACS Nano. 9, 5, p. 4882-4890 9 p.

Research output: Contribution to journalArticle

Graphite
Graphene
Transition metals
Heterojunctions
graphene
917 Citations (Scopus)

Recent Advances in Two-Dimensional Materials beyond Graphene

Bhimanapati, G. R., Lin, Z., Meunier, V., Jung, Y., Cha, J., Das, S., Xiao, D., Son, Y., Strano, M. S., Cooper, V. R., Liang, L., Louie, S. G., Ringe, E., Zhou, W., Kim, S. S., Naik, R. R., Sumpter, B. G., Terrones, H., Xia, F., Wang, Y. & 7 others, Zhu, J., Akinwande, D., Alem, N., Schuller, J. A., Schaak, R. E., Terrones, M. & Robinson, J. A., Nov 6 2015, In : ACS nano. 9, 12, p. 11509-11539 31 p.

Research output: Contribution to journalReview article

Graphite
Graphene
graphene
transition metals
Transition metals
52 Citations (Scopus)

Wafer-scale growth of VO 2 thin films using a combinatorial approach

Zhang, H. T., Zhang, L., Mukherjee, D., Zheng, Y. X., Haislmaier, R. C., Alem, N. & Engel-Herbert, R., Oct 9 2015, In : Nature communications. 6, 8475.

Research output: Contribution to journalArticle

Oxides
Transition metals
Metals
transition metals
wafers
2014
2 Citations (Scopus)

Atomic-scale observation of grains and grain boundaries in monolayers of WS2

Azizi, A., Zou, X., Ercuis, P., Zhang, Z., Laura Elias, A., Perea-López, N., Terrones, M., Yakobson, B. I. & Alem, N., Aug 1 2014, In : Microscopy and Microanalysis. 20, 3, p. 1084-1085 2 p.

Research output: Contribution to journalConference article

Monolayers
Grain boundaries
grain boundaries
69 Citations (Scopus)

Controlled growth of a line defect in graphene and implications for gate-tunable valley filtering

Chen, J. H., Autès, G., Alem, N., Gargiulo, F., Gautam, A., Linck, M., Kisielowski, C., Yazyev, O. V., Louie, S. G. & Zettl, A., Mar 14 2014, In : Physical Review B - Condensed Matter and Materials Physics. 89, 12, 121407.

Research output: Contribution to journalArticle

Graphite
Graphene
valleys
graphene
Defects
96 Citations (Scopus)

Dislocation motion and grain boundary migration in two-dimensional tungsten disulphide

Azizi, A., Zou, X., Ercius, P., Zhang, Z., Elías, A. L., Perea-López, N., Stone, G., Terrones, M., Yakobson, B. I. & Alem, N., 2014, In : Nature communications. 5, 4867.

Research output: Contribution to journalArticle

Tungsten
Graphite
disulfides
Dislocations (crystals)
Disulfides

In situ high temperature atomic resolution transmission electron microscopy of 2D nanomaterials

Gibb, A. L., Alem, N., Chen, J. H., Ciston, J. & Zettl, A., Aug 1 2014, In : Microscopy and Microanalysis. 20, 3, p. 1770-1771 2 p.

Research output: Contribution to journalConference article

Nanostructured materials
Transmission electron microscopy
transmission electron microscopy
Temperature
9 Citations (Scopus)

Tuning carbon content and morphology of FeCo/graphitic carbon core-shell nanoparticles using a salt-matrix-assisted CVD process

Azizi, A., Khosla, T., Mitchell, B. S., Alem, N. & Pesika, N. S., Apr 2014, In : Particle and Particle Systems Characterization. 31, 4, p. 474-480 7 p.

Research output: Contribution to journalArticle

Chemical vapor deposition
Carbon
Tuning
Salts
tuning
2013
137 Citations (Scopus)

Atomic resolution imaging of grain boundary defects in monolayer chemical vapor deposition-grown hexagonal boron nitride

Gibb, A. L., Alem, N., Chen, J. H., Erickson, K. J., Ciston, J., Gautam, A., Linck, M. & Zettl, A., May 8 2013, In : Journal of the American Chemical Society. 135, 18, p. 6758-6761 4 p.

Research output: Contribution to journalArticle

Boron nitride
Chemical vapor deposition
Monolayers
Grain boundaries
Imaging techniques
12 Citations (Scopus)

Low pressure chemical vapor deposition synthesis of hexagonal boron nitride on polycrystalline metal foils

Gibb, A., Alem, N. & Zettl, A., Dec 1 2013, In : Physica Status Solidi (B) Basic Research. 250, 12, p. 2727-2731 5 p.

Research output: Contribution to journalArticle

metal foils
Low pressure chemical vapor deposition
Boron nitride
boron nitrides
Metal foil
2012

Defects in Two Dimensional Crystals: An Ultra-high Resolution Aberration-corrected Electron Microscopy Study

Alem, N., Yazyev, O. V., Ramasse, Q. M., Seabourne, C. R., Kisielowski, C. K., Hartel, P., Jiang, B., Erni, R., Scott, A. J., Louie, S. G. & Zettl, A., Jul 2012, In : Microscopy and Microanalysis. 18, S2, p. 1516-1517 2 p.

Research output: Contribution to journalArticle

Phoenix (AZ)
Microanalysis
Aberrations
microanalysis
Electron microscopy

Probing defects and impurity-induced electronic structure changes in single and double-layer hexagonal boron nitride sheets with STEM-EELS

Ramasse, Q. M., Alem, N., Yazyev, O. V., Zettl, A., Pan, C. T., Nair, R. R., Jalil, R., Zan, R., Bangert, U., Seabourne, C. R., Scott, A. J. & Novoselov, K. S., Jul 2012, In : Microscopy and Microanalysis. 18, S2, p. 1526-1527 2 p.

Research output: Contribution to journalArticle

Boron nitride
Electron energy loss spectroscopy
boron nitrides
Electronic structure
Impurities
32 Citations (Scopus)

Subangstrom edge relaxations probed by electron microscopy in hexagonal boron nitride

Alem, N., Ramasse, Q. M., Seabourne, C. R., Yazyev, O. V., Erickson, K., Sarahan, M. C., Kisielowski, C., Scott, A. J., Louie, S. G. & Zettl, A., Nov 16 2012, In : Physical Review Letters. 109, 20, 205502.

Research output: Contribution to journalArticle

boron nitrides
electron microscopy
atomic structure
interlayers
graphene
2011
93 Citations (Scopus)

Longitudinal splitting of boron nitride nanotubes for the facile synthesis of high quality boron nitride nanoribbons

Erickson, K. J., Gibb, A. L., Sinitskii, A., Rousseas, M., Alem, N., Tour, J. M. & Zettl, A. K., Aug 10 2011, In : Nano letters. 11, 8, p. 3221-3226 6 p.

Research output: Contribution to journalArticle

Nanoribbons
Carbon Nanotubes
Boron nitride
boron nitrides
Nanotubes
42 Citations (Scopus)

Probing the out-of-plane distortion of single point defects in atomically thin hexagonal boron nitride at the picometer scale

Alem, N., Yazyev, O. V., Kisielowski, C., Denes, P., Dahmen, U., Hartel, P., Haider, M., Bischoff, M., Jiang, B., Louie, S. G. & Zettl, A., Mar 21 2011, In : Physical Review Letters. 106, 12, 126102.

Research output: Contribution to journalArticle

boron nitrides
point defects
boron
defects
symmetry
14 Citations (Scopus)

Vacancy growth and migration dynamics in atomically thin hexagonal boron nitride under electron beam irradiation

Alem, N., Erni, R., Kisielowski, C., Rossell, M. D., Hartel, P., Jiang, B., Gannett, W. & Zettl, A., Aug 1 2011, In : Physica Status Solidi - Rapid Research Letters. 5, 8, p. 295-297 3 p.

Research output: Contribution to journalArticle

Boron nitride
boron nitrides
Vacancies
Electron beams
Irradiation
2010
240 Citations (Scopus)

A direct transfer of layer-area graphene

Regan, W., Alem, N., Alemán, B., Geng, B., Girit, Ç., Maserati, L., Wang, F., Crommie, M. & Zettl, A., Mar 26 2010, In : Applied Physics Letters. 96, 11, 113102.

Research output: Contribution to journalArticle

graphene
grids
transmission electron microscopy
contamination
routes
697 Citations (Scopus)

Determination of the local chemical structure of graphene oxide and reduced graphene oxide

Erickson, K., Erni, R., Lee, Z., Alem, N., Gannett, W. & Zettl, A., Oct 25 2010, In : Advanced Materials. 22, 40, p. 4467-4472 6 p.

Research output: Contribution to journalArticle

Graphite
Oxides
Graphene
High resolution transmission electron microscopy