scholarly journals Two-Dimensional Nanoscale Imaging of Gadolinium Spins via Scanning Probe Relaxometry with a Single Spin in Diamond

2014 ◽  
Vol 2 (5) ◽  
Author(s):  
M. Pelliccione ◽  
B. A. Myers ◽  
L. M. A. Pascal ◽  
A. Das ◽  
A. C. Bleszynski Jayich
Keyword(s):  
Scanning Probe ◽  
Two Dimensional ◽  
Single Spin ◽  
Nanoscale Imaging

scholarly journals Nanoribbons with Non-Alternant Topology from Fusion of Polyazulene: Carbon Allotropes Beyond Graphene

2019 ◽  
Author(s):  
Qitang Fan ◽  
Daniel Martin-Jimenez ◽  
Daniel Ebeling ◽  
Claudio K. Krug ◽  
Lea Brechmann ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Low Temperature ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Scanning Probe ◽  
Two Dimensional ◽  
Reaction Step ◽  
Functional Theory ◽  
Carbon Allotropes ◽  
Temperature Scanning

Various two-dimensional (2D) carbon allotropes with non-alternant topologies, such as pentaheptites and phagraphene, have been proposed. Predictions indicate that these metastable carbon polymorphs, which contain odd-numbered rings, possess unusual (opto)electronic properties. However, none of these materials has been achieved experimentally due to synthetic challenges. In this work, by using on-surface synthesis, nanoribbons of the non-alternant graphene allotropes, phagraphene and tetra-penta-hepta(TPH)-graphene have been obtained by dehydrogenative C-C coupling of 2,6-polyazulene chains. These chains were formed in a preceding reaction step via on-surface Ullmann coupling of 2,6-dibromoazulene. Low-temperature scanning probe microscopies with CO-functionalized tip and density functional theory calculations have been used to elucidate their structural properties. <br>

Scanning probe techniques for nanoscale imaging and patterning

2019 ◽  
pp. 97-112 ◽  
Author(s):  
Antoniu Moldovan ◽  
Anca Marinescu ◽  
Simona Brajnicov ◽  
Nicoleta Dumitrescu ◽  
Nicu D. Scarisoreanu ◽  
...  
Keyword(s):  
Scanning Probe ◽  
Nanoscale Imaging

Two dimensional scanning probe using off-axis magnetic force of single solenoid for 3D OCT imaging

2011 ◽  
Author(s):  
Eun Jung Min ◽  
Jun Geun Shin ◽  
Yuri Kim ◽  
Byeong Ha Lee
Keyword(s):  
Magnetic Force ◽  
Scanning Probe ◽  
Two Dimensional ◽  
Oct Imaging

scholarly journals Characterizing two-dimensional superconductivity via nanoscale noise magnetometry with single-spin qubits

2022 ◽  
Vol 105 (2) ◽  
Author(s):  
Pavel E. Dolgirev ◽  
Shubhayu Chatterjee ◽  
Ilya Esterlis ◽  
Alexander A. Zibrov ◽  
Mikhail D. Lukin ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Spin Qubits ◽  
Single Spin

Two-dimensional honeycomb-kagome Ta2S3: a promising single-spin Dirac fermion and quantum anomalous hall insulator with half-metallic edge states

Nanoscale ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 5666-5673 ◽  
Author(s):  
Liang Zhang ◽  
Chang-wen Zhang ◽  
Shu-Feng Zhang ◽  
Wei-xiao Ji ◽  
Ping Li ◽  
...  
Keyword(s):  
Carrier Mobility ◽  
Magnetocrystalline Anisotropy ◽  
Dirac Fermion ◽  
High Curie Temperature ◽  
Two Dimensional ◽  
Edge States ◽  
Half Metallic ◽  
Single Spin ◽  
High Carrier Mobility ◽  
High Carrier

Recent experimental success in the realization of two-dimensional (2D) magnetism has invigorated the search for new 2D magnetic materials with a large magnetocrystalline anisotropy, high Curie temperature, and high carrier mobility.

Nanoribbons with Non-Alternant Topology from Fusion of Polyazulene: Carbon Allotropes Beyond Graphene

2019 ◽  
Author(s):  
Qitang Fan ◽  
Daniel Martin-Jimenez ◽  
Daniel Ebeling ◽  
Claudio K. Krug ◽  
Lea Brechmann ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Low Temperature ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Scanning Probe ◽  
Two Dimensional ◽  
Reaction Step ◽  
Functional Theory ◽  
Carbon Allotropes ◽  
Temperature Scanning

Various two-dimensional (2D) carbon allotropes with non-alternant topologies, such as pentaheptites and phagraphene, have been proposed. Predictions indicate that these metastable carbon polymorphs, which contain odd-numbered rings, possess unusual (opto)electronic properties. However, none of these materials has been achieved experimentally due to synthetic challenges. In this work, by using on-surface synthesis, nanoribbons of the non-alternant graphene allotropes, phagraphene and tetra-penta-hepta(TPH)-graphene have been obtained by dehydrogenative C-C coupling of 2,6-polyazulene chains. These chains were formed in a preceding reaction step via on-surface Ullmann coupling of 2,6-dibromoazulene. Low-temperature scanning probe microscopies with CO-functionalized tip and density functional theory calculations have been used to elucidate their structural properties. <br>

Scanning-probe and information-concealing machine learning intermediate hexatic phase and critical scaling of solid-hexatic phase transition in deformable particles

2022 ◽  
Author(s):  
Weichen Guo ◽  
Bao-Quan Ai ◽  
Liang He
Keyword(s):  
Machine Learning ◽  
Phase Transition ◽  
Correlation Length ◽  
Continuous Phase ◽  
Scanning Probe ◽  
Learning Approaches ◽  
Two Dimensional ◽  
Critical Scaling ◽  
Hexatic Phase ◽  
Deformable Particles

Abstract We investigate the two-dimensional melting of deformable polymeric particles with multi-body interactions described by the Voronoi model. We report machine learning evidence for the existence of the intermediate hexatic phase in this system, and extract the critical exponent $\nu\approx0.65$ for the divergence of the correlation length of the associated solid-hexatic phase transition. Moreover, we clarify the discontinuous nature of the hexatic-liquid phase transition in this system. These findings are achieved by directly analyzing system's spatial configurations with two generic machine learning approaches developed in this work, dubbed ``scanning-probe'' via which the possible existence of intermediate phases can be efficiently detected, and ``information-concealing'' via which the critical scaling of the correlation length in the vicinity of generic continuous phase transition can be extracted. Our work provides new physical insights into the fundamental nature of the two-dimensional melting of deformable particles, and establishes a new type of generic toolbox to investigate fundamental properties of phase transitions in various complex systems.

Orthogonality Measurement of Cross-Grating Based on Image Processing of Multi-Order Diffraction Patterns

2014 ◽  
Vol 613 ◽  
pp. 64-69
Author(s):  
Yao Hu ◽  
Nan Fen Wang
Keyword(s):  
Image Processing ◽  
Uncertainty Analysis ◽  
Scanning Probe Microscopy ◽  
Machine Tools ◽  
Displacement Measurement ◽  
Scanning Probe ◽  
Two Dimensional ◽  
Accuracy Measurement ◽  
Uncertainty Sources ◽  
Diffraction Patterns

Cross-gratings or two-dimensional gratings have found applications in precision displacement measurement for nanoscale machine tools or mask-wafer alignment in photo-lithography. The orthogonality of displacement measurement or alignment in two perpendicular directions is assured by the orthogonality of the grating grooves. Once the grooves are not exactly normal to each other, it should be calibrated before measurement or alignment to guarantee the accuracy. Scanning probe microscopy (SPM) and optical diffractometry (OD) are commonly used for highly accurate calibration of cross-grating orthogonality. In this paper, two methods based on diffraction are proposed for middle accuracy measurement at relative higher speed. At first, we briefly explain the configuration of each method. The calibration results of cross-gratings are shown. We also discuss the results of uncertainty analysis and the cause of main uncertainty sources.

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