Journal articles on the topic '2D morphology'

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1

Banda, Mohd Sarfaraz, Stephan Niewerth, and Jochen Aberle. "2D numerical simulation of meander morphology." E3S Web of Conferences 40 (2018): 05062. http://dx.doi.org/10.1051/e3sconf/20184005062.

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This paper describes the application of the two-dimensional (2D) modelling approach implemented in the open-source code Delft3D for the simulation of morphological development of a natural meandering river. A specific reach of the Dhaleshwari River (Bangladesh) for which field data has been available served as case study. The bed morphology and meander planform adjustment in the study area were simulated over a 10-year period considering a time-varying discharge scenario. The results showed that the 2D model was able to reproduce morphological characteristics such as scour depth, bank erosion and pool-riffle morphology, even though the model showed some deficiencies to reproduce bankfull channel width and transverse bed slopes. Regarding the planimetric evolution, the planform parameters (i.e., meander belt width, meander wavelength and radius of curvature) confirmed that the model results are realistic and are in agreement with results reported in the literature.
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Li, Yue, Weiping Cai, Bingqiang Cao, Guotao Duan, Cuncheng Li, Fengqiang Sun, and Haibo Zeng. "Morphology-controlled 2D ordered arrays by heating-induced deformation of 2D colloidal monolayer." J. Mater. Chem. 16, no. 6 (2006): 609–12. http://dx.doi.org/10.1039/b513050f.

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Cohen-Pope, Sullivan, John R. Crockett, Maggie Wang, Kaitlyn Flynn, Alexandra Hoff, and Ying Bao. "Morphology control of SERS-active 2D gold nanosnowflakes." Journal of Materials Chemistry C 8, no. 36 (2020): 12427–36. http://dx.doi.org/10.1039/d0tc02183k.

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Mukhopadhyay, Susanta, and Bhabatosh Chanda. "Fusion of 2D grayscale images using multiscale morphology." Pattern Recognition 34, no. 10 (October 2001): 1939–49. http://dx.doi.org/10.1016/s0031-3203(00)00123-0.

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5

Tien, Li-Chia, and Yu-Che Shih. "Morphology-Controlled Vapor Phase Growth and Characterization of One-Dimensional GaTe Nanowires and Two-Dimensional Nanosheets for Potential Visible-Light Active Photocatalysts." Nanomaterials 11, no. 3 (March 18, 2021): 778. http://dx.doi.org/10.3390/nano11030778.

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Gallium telluride (GaTe) one-dimensional (1D) and two-dimensional (2D) materials have drawn much attention for high-performance optoelectronic applications because it possesses a direct bandgap for all thickness. We report the morphology-controlled vapor phase growth of 1D GaTe nanowires and 2D GaTe nanosheets by a simple physical vapor transport (PVT) approach. The surface morphology, crystal structure, phonon vibration modes, and optical property of samples were characterized and studied. The growth temperature is a key synthetic factor to control sample morphology. The 1D GaTe single crystal monoclinic nanowires were synthesized at 550 °C. The strong interlayer interaction and high surface migration of adatoms on c-sapphire enable the assembly of 1D nanowires into 2D nanosheet under 600 °C. Based on the characterization results demonstrated, we propose the van der Waals growth mechanism of 1D nanowires and 2D nanosheets. Moreover, the visible-light photocatalytic activity of 1D nanowires and 2D nanosheets was examined. Both 1D and 2D GaTe nanostructures exhibit visible-light active photocatalytic activity, suggesting that the GaTe nanostructures may be promising materials for visible light photocatalytic applications.
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Verma, Akarsh, Avinash Parashar, and M. Packirisamy. "Tailoring the failure morphology of 2D bicrystalline graphene oxide." Journal of Applied Physics 124, no. 1 (July 7, 2018): 015102. http://dx.doi.org/10.1063/1.5033542.

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7

Robinson, Joshua A., Sarah Eichfeld, Yu-Chuan Lin, Ning Lu, and Moon Kim. "Growth Morphology and Defects in 2D Heterostructures and Interfaces." Microscopy and Microanalysis 21, S3 (August 2015): 101–2. http://dx.doi.org/10.1017/s1431927615001300.

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8

Su, Yingjie, Jianqiang Xue, Anmin Liu, Tingli Ma, and Liguo Gao. "Unveiling the Effect of Solvents on Crystallization and Morphology of 2D Perovskite in Solvent-Assisted Method." Molecules 27, no. 6 (March 11, 2022): 1828. http://dx.doi.org/10.3390/molecules27061828.

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Controlling the crystallographic orientations of 2D perovskite is regarded as an effective way to improve the efficiency of PSCs based on 2D perovskite. In this paper, five different assistant solvents were selected to unveil the effect of solvents on crystallization and morphology of 2D perovskite in a solvent-assisted method. Results demonstrated that the effect of Lewis basicity on the crystallization process was the most important factor for preparing 2D perovskite. The stability of the intermediate, reacted between the solvent and the Pb2+, determined the quality of 2D film. The stronger the Lewis basicity was, the more obvious the accurate control effect on the top-down crystallization process of 2D perovskite would be. This could enhance the crystallographic orientation of 2D perovskite. The effect of Lewis basicity played a more important role than other properties of the solvent, such as boiling point and polarity.
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9

Xu, Xiufeng, Rui Dang, and Mengmeng Xie. "Research on preparation of 2D Cu nanomaterials." Journal of Physics: Conference Series 2321, no. 1 (August 1, 2022): 012009. http://dx.doi.org/10.1088/1742-6596/2321/1/012009.

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Abstract Recently, metal nanosheets have been a promising material for application in nano-electrical devices. This study describes a chemical reduction preparation method of large-area Cu nanosheets in a facile condition using copper sulfate as source and glucose as reductant. The morphology and phase analysis of the synthesized copper nanosheets are measured by scanning electron microscope (SEM) and X-ray electron diffraction (XRD). The influences of several experimental parameters on the morphology of the products such as reducing agent and reaction temperature are investigated. It is found that by changing the molar ratio of copper ion to reductant, the thickness of copper nanosheets can be controlled. The obtained productions demonstrate excellent electrical conductivity.
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Hoai, Nguyen Thi Thu, and Ta Thi Dinh. "Two and three-dimensional transesophageal echocardiography for pre-operative assessment of mitral valve morphology and regurgitation severity." Tạp chí Phẫu thuật Tim mạch và Lồng ngực Việt Nam 40 (January 18, 2023): 92–101. http://dx.doi.org/10.47972/vjcts.v40i.837.

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Background: Two-dimensional (2D) transthoracic (TTE) and transesophageal echocardiography (TEE) are the two main diagnostic modalities used to assess valvular heart diseases, particularly for mitral valve injury. In patients who have the indication of mitral valve surgery, 2D TEE & TTE have some limitations in identifying valve lesions. Three-dimensional transesophageal echocardiography (3D TEE) is more accurate than 2DTTE and 2DTEE in the qualitative assessment of mitral valve. Objectives. Evaluating valve morphology and the severity of mitral valve regurgitation using 2DTTE and 2D/3D TEE in patients who required surgical intervention, compared to surgical and left ventricular angiography findings. Subjects: 44 patients with surgical indication from September 2017 to June 2018 were enrolled in this study. Methods: A cross-sectional study conducted at Vietnam National Heart Institute from September 2017 to June 2018. 44 patients with mitral regurgitation who had indication for mitral valve surgery underwent 2D TEE and 2D/3D TEE before opened heart surgery for mitral valve, 17/44 had left ventriculogram during coronary angiogram before surgery. Results: Men/women ratio = 2/1. Mean age: 54.14 ± 13.066 years old. Most of patients (93,2%) had symptoms of heart failure with mean NYHA classification of 2.55 ± 0.504. 3D TEE showed higher diagnostic accuracy and better agreement with surgical findings compared to 2D TEE and 2D TTE in A2 prolapse, A3 prolapse, P3 prolapse, Kappa =1,1,0.65 respectively. For anterior leaflet perforation, 3D TEE had positive predictive value of 100% and better agreement (Kappa =1) in comparison with 2D TEE and 2D TTE with positive predictive value of 96,5 %, Kappa = 0,65. In identifying valve vegetation, 3D TEE had positive predictive value of 93%, kappa =0,82 which were higher than those of 2D TEE and 2D TTE (positive predictive value of 89,6 % and Kappa = 0,73). In evaluating mitral valve regurgitation, 3D TEE had positive predictive value of 100%, kappa =1 compared with positive predictive value of 76,5%, kappa of 0,47 of 2D TEE and 2D TTE. Conclusions: 3D TEE is valuable in localizing prolapse valve segments, especially for A2, A3 and P3 prolapse, as well as in diagnosing anterior leaflet perforation and vegetation of mitral valve. 3D TEE is also more valuable than 2D TEE and 2D TTE in assessing mitral regurgitation severity.
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Rai, Rajeev Kumar, Saurav Islam, Ahin Roy, Garvesh Agrawal, Abhishek Kumar Singh, Arindam Ghosh, and Ravishankar N. "Morphology controlled synthesis of low bandgap SnSe2 with high photodetectivity." Nanoscale 11, no. 3 (2019): 870–77. http://dx.doi.org/10.1039/c8nr08138g.

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12

Shen, Dongyang, Chengzhao Luo, Ronghong Zheng, Qinyi Li, and Yu Chen. "Improvement of photoluminescence intensity and film morphology of perovskite by Ionic liquids additive." E3S Web of Conferences 257 (2021): 03066. http://dx.doi.org/10.1051/e3sconf/202125703066.

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Metal halide perovskites have received much attention for their application in light-emitting diodes (LEDs) and solar cells in the past several years. Among them, 2D and quasi-2D perovskite with organic long-chain cations introduced have drawn significant attention. However, while improving wet and thermal stability, as the grain size becomes smaller, more defects introduced at the grain boundary and surface, resulting in the increase of non-radiative recombination is becoming the main problem which should be faced by 2D/quasi-2D perovskite materials. Here, we report a new strategy employing ionic liquid named 1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide(EMB).By adding a small amount of ionic liquid to the precursor, the defect was effectively passivated and the photoluminescence intensity was increased by 11 times and the fluorescent lifetime was increased by about 1.5 times. The flatness of the prepared perovskite thin films has also been effectively improved.
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13

Wang, Junmei, Zhijian Wang, Li Li, Jiazang Chen, Jianfeng Zheng, Suping Jia, and Zhenping Zhu. "Structure-controlled CdS(0D, 1D, 2D) embedded onto 2D ZnS porous nanosheets for highly efficient photocatalytic hydrogen generation." RSC Advances 7, no. 40 (2017): 24864–69. http://dx.doi.org/10.1039/c7ra02565c.

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Modulating the CdS morphology with a 1D structure with high conduction band energy can speed up the electron transfer to Pt sites and increase the photocatalytic hydrogen generation rate from 7.7 to 26 mmol g−1 h−1.
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14

Shreif, Zeina, Lara Mandalian, Alaa Abi-Haydar, and Rabih Sultan. "Taming ring morphology in 2D Co(OH)2 Liesegang patterns." Physical Chemistry Chemical Physics 6, no. 13 (2004): 3461. http://dx.doi.org/10.1039/b404064c.

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15

Sial, M. Naeem, Muhammad Usman, Atefeh Nemati Moghaddam, Ali Imran Channa, Yanan Yu, Fangzhu Qing, and Haining Ji. "CVD-grown 2D molybdenum diselenide: Morphology, spectroscopic and mechanical characterization." Journal of Alloys and Compounds 803 (September 2019): 795–803. http://dx.doi.org/10.1016/j.jallcom.2019.06.163.

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16

Fu, Chaoying, Federico Rosei, and Dmitrii F. Perepichka. "2D Self-Assembly of Fused Oligothiophenes: Molecular Control of Morphology." ACS Nano 6, no. 9 (August 14, 2012): 7973–80. http://dx.doi.org/10.1021/nn3025139.

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17

Tan, Zhaonian, Weixing Ji, Jianhua Gao, Yueyan Zhao, Akrem Benatia, Yizhuo Wang, and Feng Shi. "MMSparse: 2D partitioning of sparse matrix based on mathematical morphology." Future Generation Computer Systems 108 (July 2020): 521–32. http://dx.doi.org/10.1016/j.future.2020.02.076.

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18

Soulis, Johannes V. "A fully coupled numerical technique for 2D bed morphology calculations." International Journal for Numerical Methods in Fluids 38, no. 1 (2001): 71–98. http://dx.doi.org/10.1002/fld.207.

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19

Pan, Feng, Junying Zhang, Weiwei Zhang, Chao Cai, and Tianmin Wang. "TiO2 Array Films with Controllable Morphology." Journal of Nanoscience and Nanotechnology 8, no. 5 (May 1, 2008): 2632–36. http://dx.doi.org/10.1166/jnn.2008.18296.

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Titanium dioxide films with large-area 2D ordered pore structure were prepared on glass substrate via a sol dip-coating latex template method. By simply controlling the concentration of the precursor sol, TiO2 array films with different morphologies, such as hollow sphere shell, bowl, pot, and ring arrays were obtained. Such films have large-scale periodic feature and large specific areas, which is promising to be useful in the optical, gas-sensing, catalysis applications.
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Khanis, Noor Hamizah, Richard Ritikos, Wee Siong Chiu, Choon Yian Haw, Nur Maisarah Abdul Rashid, Mei Yuen Chia, Poi Sim Khiew, and Saadah Abdul Rahman. "SnO2 Nanoparticles Decorated 2D Wavy Hierarchical Carbon Nanowalls with Enhanced Photoelectrochemical Performance." Journal of Nanomaterials 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/4315905.

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Two-dimensional carbon nanowall (2D-CNW) structures were prepared by hot wire assisted plasma enhanced chemical vapor deposition (hw-PECVD) system on silicon substrates. Controlled variations in the film structure were observed with increase in applied rf power during deposition which has been established to increase the rate of dissociation of precursor gases. The structural changes resulted in the formation of wavy-like features on the 2D-CNW, thus further enhancing the surface area of the nanostructures. The FESEM results confirmed the morphology transformation and conclusively showed the evolution of the 2D-CNW novel structures while Raman results revealed increase in ID/IG ratio indicating increase in the presence of disordered domains due to the presence of open edges on the 2D-CNW structures. Subsequently, the best 2D-CNW based on the morphology and structural properties was functionalized with tin oxide (SnO2) nanoparticles and used as a working electrode in a photoelectrochemical (PEC) measurement system. Intriguingly, the SnO2 functionalized 2D-CNW showed enhancement in both Mott-Schottky profiles and LSV properties which suggested that these hierarchical networks showed promising potential application as effective charge-trapping medium in PEC systems.
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21

Naffakh, Mohammed, Miriam Fernández, Peter S. Shuttleworth, Ana M. García, and Diego A. Moreno. "Nanocomposite Materials with Poly(l-lactic Acid) and Transition-Metal Dichalcogenide Nanosheets 2D-TMDCs WS2." Polymers 12, no. 11 (November 16, 2020): 2699. http://dx.doi.org/10.3390/polym12112699.

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Layered transition-metal dichalcogenides (TMDCs) based on tungsten disulfide nanosheets (2D-WS2) were introduced via melt processing into poly(l-lactic acid) (PLLA) to generate PLLA/2D-WS2 nanocomposite materials. The effects of the 2D-WS2 on the morphology, crystallization, and biodegradation behavior of PLLA were investigated. In particular, the non-isothermal melt-crystallization of neat PLLA and PLLA/2D-WS2 nanocomposites were analyzed in detail by varying both the cooling rate and 2D-WS2 loading. The kinetic parameters of PLLA chain crystallization are successfully described using the Liu model. It was found that the PLLA crystallization rate was reduced with 2D-WS2 incorporation, while the crystallization mechanism and crystal structure of PLLA remained unchanged in spite of nanoparticle loading. This was due to the PLLA chains not being able to easily adsorb on the WS2 nanosheets, hindering crystal growth. In addition, from surface morphology analysis, it was observed that the addition of 2D-WS2 facilitated the enzymatic degradation of poorly biodegradable PLLA using a promising strain of actinobacteria, Lentzea waywayandensis. The identification of more suitable enzymes to break down PLLA nanocomposites will open up new avenues of investigation and development, and it will also lead to more environmentally friendly, safer, and economic routes for bioplastic waste management.
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Abriou, D., D. Gagnot, J. Jupille, and F. Creuzet. "Morphology of Silver Thin Films Deposited on TiO2(110) Surfaces." Surface Review and Letters 05, no. 01 (February 1998): 387–92. http://dx.doi.org/10.1142/s0218625x98000712.

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The growth mode of silver films deposited at room temperature on TiO 2(110) surfaces has been examined by means of atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) in ultrahigh vacuum (UHV) conditions, On clean vacancy-free TiO 2(110) surfaces, 0.1-nm-thick (on average) Ag deposits form a two-dimensional (2D) layer. When the thickness of the silver overlayer is increased, 3D clusters are shown to appear while the 2D film is preserved, furthermore, the influence of surface oxygen vacancies on the growth of Ag/TiO 2(110) is evidenced by well-characterized differences in the morphology of 9-nm-thick silver deposits.
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Zhang, Yuanli, Xianchao Xu, and Zhan Liu. "Comparison of Morphologic Parameters of Temporomandibular Joint for Asymptomatic Subjects Using the Two-Dimensional and Three-Dimensional Measuring Methods." Journal of Healthcare Engineering 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/5680708.

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The differences of temporomandibular joint (TMJ) morphologic parameters by using two-dimensional (2D) and three-dimensional (3D) measuring methods were compared. Ten asymptomatic subjects (26.75 ± 4.89 years) were randomly recruited. The 3D models of the maxilla, mandible, and teeth were reconstructed according to cone-beam computed tomography (CBCT) image data. The morphologic parameters of TMJs were measured by the 2D CBCT measuring method (group A) and the 3D reconstruction model measuring method (group B), respectively. The morphologic parameters in each group were assessed by paired samplest-test, and the statistical significance was achieved whenp<0.05. The horizontal condylar angle (HCA), sagittal ramus angle (SRA), medial joint space (MJS), lateral joint space (LJS), superior joint space (SJS), and anterior joint space (AJS) in group A were significantly smaller than those in group B (p<0.05). The HCA on the left side was significantly smaller than that on the right side in group A (p<0.05). However, all the morphologic parameters in group B were not significantly different between left and right sides. In conclusion, there were significant differences for the morphologic parameters of TMJ measured on 2D CBCT and 3D models. 3D measuring method should be used for the detection of TMJ morphology in clinical practice.
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Johnson, Matthew, Yusuf Uddin, Maureen Metcalfe, and Ingeborg Schmidt-Krey. "Preparation of single-layered enzyme 2D crystals for electron crystallography." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C1065. http://dx.doi.org/10.1107/s2053273314089347.

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Electron crystallography allows for a wide range of membrane proteins to be studied once conditions for two-dimensional (2D) crystallization have been identified. Two-dimensional crystallization is most frequently achieved via the dialysis approach, where the detergent-solubilized membrane protein is reconstituted into a lipid bilayer [1]. Vesicles, planar-tubular crystals, and sheets are the three most common 2D crystal morphologies. Vesicle and planar-tubular morphologies are observed for the largest percentage of 2D crystals of membrane proteins. Upon negative stain as well as electron cryo-microscopy (cryo-EM) grid preparation, each planar-tubular and vesicle 2D crystal will result in two ordered bilayers that can be analyzed separately by image processing. If any of these morphologies, however, contains a larger number of stacked crystals, data of tilted crystal stacks in particular can currently not be analyzed. Sheets constitute the most desirable morphology, allowing for the preparation of very flat samples for cryo-EM [2]. This is at present the only type of morphology that may be amenable to collection and analysis of electron diffraction data of highly ordered samples [3]. We could reproducibly induce single-layered sheet formation in the large majority of 2D crystals of two different enzyme samples and are working towards a general protocol applicable to other membrane protein 2D crystals.
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Zeng, Hui-Min, Chao Wang, Wei-Hong Wu, Wei-Tao Mao, Zhan-Guo Jiang, and Cai-Hong Zhan. "Solvent-driven crystal–crystal transformation and morphology change in a 2D layered inorganic POM-based framework." Nanoscale Advances 3, no. 16 (2021): 4680–84. http://dx.doi.org/10.1039/d1na00416f.

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26

Santana, Sharlene E., Jessica H. Arbour, Abigail A. Curtis, and Kathryn E. Stanchak. "3D Digitization in Functional Morphology: Where is the Point of Diminishing Returns?" Integrative and Comparative Biology 59, no. 3 (June 11, 2019): 656–68. http://dx.doi.org/10.1093/icb/icz101.

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Abstract Modern computational and imaging methods are revolutionizing the fields of comparative morphology, biomechanics, and ecomorphology. In particular, imaging tools such as X-ray micro computed tomography (µCT) and diffusible iodine-based contrast enhanced CT allow observing and measuring small and/or otherwise inaccessible anatomical structures, and creating highly accurate three-dimensional (3D) renditions that can be used in biomechanical modeling and tests of functional or evolutionary hypotheses. But, do the larger datasets generated through 3D digitization always confer greater power to uncover functional or evolutionary patterns, when compared with more traditional methodologies? And, if so, why? Here, we contrast the advantages and challenges of using data generated via (3D) CT methods versus more traditional (2D) approaches in the study of skull macroevolution and feeding functional morphology in bats. First, we test for the effect of dimensionality and landmark number on inferences of adaptive shifts during cranial evolution by contrasting results from 3D versus 2D geometric morphometric datasets of bat crania. We find sharp differences between results generated from the 3D versus some of the 2D datasets (xy, yz, ventral, and frontal), which appear to be primarily driven by the loss of critical dimensions of morphological variation rather than number of landmarks. Second, we examine differences in accuracy and precision among 2D and 3D predictive models of bite force by comparing three skull lever models that differ in the sources of skull and muscle anatomical data. We find that a 3D model that relies on skull µCT scans and muscle data partly derived from diceCT is slightly more accurate than models based on skull photographs or skull µCT and muscle data fully derived from dissections. However, the benefit of using the diceCT-informed model is modest given the effort it currently takes to virtually dissect muscles from CT scans. By contrasting traditional and modern tools, we illustrate when and why 3D datasets may be preferable over 2D data, and vice versa, and how different methodologies can complement each other in comparative analyses of morphological function and evolution.
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Koinkar, Pankaj, Kohei Sasaki, Tetsuro Katayama, Akihiro Furube, and Satoshi Sugano. "Laser assisted synthesis of WS2 nanorods by pulsed laser ablation in liquid environment." International Journal of Modern Physics B 35, no. 14n16 (June 24, 2021): 2140007. http://dx.doi.org/10.1142/s0217979221400075.

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Two dimensional (2D) materials are widely attracting the interest of researchers due to their unique crystal structure and diverse properties. In the present work, tungsten disulfide (WS[Formula: see text] nanorods were synthesized by a simple method of pulsed laser ablation in liquid (PLAL) environment. The prepared WS2 are analyzed by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), UV-visible spectroscopy (UV-vis) and Raman spectroscopy to confirm the surface morphology, phase and structure. A possible growth mechanism of WS2 is proposed. This study indicates new door for the preparation of 2D materials with specific morphology.
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Fernández, Estefanía, Mercedes Boronat, and Avelino Corma. "The 2D or 3D morphology of sub-nanometer Cu5 and Cu8 clusters changes the mechanism of CO oxidation." Physical Chemistry Chemical Physics 24, no. 7 (2022): 4504–14. http://dx.doi.org/10.1039/d1cp05166k.

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YAN, HONG, BRUNIAUX PASCAL, ZHANG JUNJIE, LIU KAIXUAN, DONG MIN, and CHEN YAN. "Application of 3D-TO-2D garment design for atypical morphology: a design case for physically disabled people with scoliosis." Industria Textila 69, no. 01 (March 1, 2018): 59–64. http://dx.doi.org/10.35530/it.069.01.1377.

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3D-to-2D garment design method emerges as a novel design solution for automatic garment design and production, especially for consumers with atypical morphology. In this paper, we introduced an application case of designing a personalized garment for physically disabled people with scoliosis (PDPS) using 3D-to-2D garment design method. A pattern modification model is proposed in order to satisfy the requirement of design automation. The proposed modification model is based on the evaluation of the 3D virtual try-on result using the professional knowledge of the designers. Research results indicate that 3D-to-2D garment design can effectively realize personalized design for atypical morphology. Also, using sensory evaluation, professional design knowledge of the designers can be fully applied to control the 2Dtechnical space of garment design based on the perception of 3D garment virtual try-on result.
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Kostopoulou, Athanasia, Konstantinos Brintakis, Efthymis Serpetzoglou, and Emmanuel Stratakis. "Laser-Assisted Fabrication for Metal Halide Perovskite-2D Nanoconjugates: Control on the Nanocrystal Density and Morphology." Nanomaterials 10, no. 4 (April 14, 2020): 747. http://dx.doi.org/10.3390/nano10040747.

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We report on a facile and rapid photo-induced process to conjugate graphene-based materials with metal-halide perovskite nanocrystals. We show that a small number of laser pulses is sufficient to decorate the 2-dimensional (2D) flakes with metal-halide nanocrystals without affecting their primary morphology. At the same time, the density of anchored nanocrystals could be finely tuned by the number of irradiation pulses. This facile and rapid room temperature method provides unique opportunities for the design and development of perovskite-2D nanoconjugates, exhibiting synergetic functionality by combining nanocrystals of different morphologies and chemical phases with various 2D materials.
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Schunter, David J., Regina K. Czech, and Douglas P. Holmes. "Packing transitions in the elastogranular confinement of a slender loop." Soft Matter 16, no. 8 (2020): 2039–44. http://dx.doi.org/10.1039/c9sm02152c.

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32

Zhang, Meng, Gill M. Biesold, and Zhiqun Lin. "A multifunctional 2D black phosphorene-based platform for improved photovoltaics." Chemical Society Reviews 50, no. 23 (2021): 13346–71. http://dx.doi.org/10.1039/d1cs00847a.

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Texter, John, Qi Li, and Feng Yan. "Heterostructured Carbon Mesonetworks By Electrospinning." ECS Meeting Abstracts MA2022-02, no. 9 (October 9, 2022): 2458. http://dx.doi.org/10.1149/ma2022-0292458mtgabs.

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Thermodynamically stable dispersions of carbon nanotubes and graphene in water are prepared at high concentrations (6-17 % by weight) by scalable liquid phase exfoliation processing using polymerized ionic liquid (PIL) stabilizers (nanolatexes, nanoparticles). This stability emanates from stabilizers that are based on imidazolium moieties that provide strong binding to the sp2 surfaces of nanocarbons while exhibiting high solvation by water. These dispersions provide means to make advanced materials and coatings exhibiting ultra-high thermal conductivity, shear switchable rheo-optical fluids, and heterostructured and high specific surface area coatings. Such advanced coatings provide a platform for catalytic membranes and electrocatalytic electrodes derived by electrospinning and further extend the utility and potential of 2D materials. We demonstrate how nonwoven mats made by electrospinning can dimensionally grow beyond the inherent 1D fibers, intrinsic to electrospinning, to provide 2D- heterostructured networks. These networks are obtained by operating close to an instability boundary, the Rayleigh instability, where fluid (electrospinning) streams decompose into droplets. Two classes of such networks are demonstrated and discussed, wherein the carrier fluid is an aqueous solution of poly(vinyl alcohol), PVA: (i) The first is derived from aqueous graphene (2D) dispersions stabilized by 0D PIL nanolatexes (NLs) 20-30 nm in diameter. As the Plateau-Rayleigh instability is approached, the usual 1D fiber morphology transforms to (preserve) reveal the intrinsic 2D morphology of individual nanoplatelets that are connected by nanofibers. (ii) The second is derived from aqueous MWCNT (1D) dispersions stabilized by 0D NLs. As the Plateau-Rayleigh instability is approached, on drying a heterostructured 2D network is formed, where 0D (NL) + 1D (MWCNT) yields 2D networks. These 2D “microfilms” form from collapse of multiphase fluid menisci comprising aqueous PVA solution and NLs shed from MWCNT surfaces and are supported by mini-networks of MWCNTs. Morphology tuning, modulation of ionic and electrical conductivities, and directions for future applications are discussed. These examples provide bases for increasing network dimensionality using colloidal re-equilibration, rather than by diffusion-limited aggregation.
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34

Gupta, Shobhnath P., Harishchandra H. Nishad, Vandana B. Patil, Sanjay D. Chakane, Mahendra A. More, Dattatray J. Late, and Pravin S. Walke. "Morphology and crystal structure dependent pseudocapacitor performance of hydrated WO3 nanostructures." Materials Advances 1, no. 7 (2020): 2492–500. http://dx.doi.org/10.1039/d0ma00518e.

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The morphology tuning with synthesis temperature shows 2D nanosheet conversion into 3D slabs with improved crystallinity promising proton insertion into the layered crystal structure for better supercapacitor performance.
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35

Gao, Xiao Ju, Chao Li, Hasigaowa, Zhi Peng Li, Yu Guang Bao, Yan Li Wang, Shuang Yan Yang, and Peng Man. "Dynamic Mechanical Properties of 2D-C/SiC and 2D-SiC/SiC." Materials Science Forum 956 (June 2019): 244–52. http://dx.doi.org/10.4028/www.scientific.net/msf.956.244.

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The quasi-static and dynamic compressive mechanical behaviors of two kinds of fiber reinforced SiC-matrix composites including 2D-C/SiC and 2D-SiC/SiC were investigated. Their compressive behaviors of materials at room temperature and strain rate from 10-4 to 104 /s were studied. The fracture surfaces and damage morphology were observed by scanning electron microscopy (SEM). The results showed that the dynamic failure strengths of the two kinds of fiber reinforced SiC-matrix composites obey the Weibull distribution. The Weibull modulus of the two materials were 13.70 (2D-C/SiC) and 5.66 (2D-SiC/SiC), respectively. It was found that the two kinds of fiber reinforced ceramic matrix composites presented a transition from brittle to tough with the decrease of strain rate. The 2D-SiC/SiC materials demonstrated a more HYPERLINK "http://dict.cnki.net/dict_result.aspx?searchword=%e6%98%be%e8%91%97%e7%9a%84&tjType=sentence&style=&t=remarkable"significant strain rate sensitivity and smoother fracture surface compared to the 2D-C/SiC composites, implying that the former composites present brittle features. This was because the SiC/SiC composites possessed high bonding strength in interface of fiber/fiber and fiber/matrix is very strong.
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36

Lu, Ming-Pei, Yung-Ting Chang, Wei-Hao Peng, Ming-Yen Lu, and Lih-Juann Chen. "Surface morphology-modulated electrical conductivity behavior in 2D anisotropic exfoliated nanoribbons." 2D Materials 8, no. 4 (September 3, 2021): 045025. http://dx.doi.org/10.1088/2053-1583/ac1f66.

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37

Yao, Bing, Rongsheng Li, Chenxi Zhang, Zhenjia Zhou, Zihao Fu, Xianlei Huang, Guowen Yuan, Jie Xu, and Libo Gao. "Tuning the morphology of 2D transition metal chalcogenides via oxidizing conditions." Journal of Physics: Condensed Matter 34, no. 19 (March 3, 2022): 195001. http://dx.doi.org/10.1088/1361-648x/ac54e5.

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Abstract Two-dimensional transition metal chalcogenides (TMCs) are emerging as an intriguing platform to realize nascent properties in condensed matter physics, materials science and device engineering. Controllable growing of TMCs becomes increasingly important, especially for the layer number, doping, and morphology. Here, we successfully tune the morphology of MoS2, MoSe2, WS2 and WSe2, from homogenous films to individual single crystalline grains only via changing the oxidizing growth conditions. The oxidization degrees are determined by the oxygen that adsorbed on substrates and the oxygen concentrations in reaction gas together. We find the homogenous films are easily formed under the reductive conditions, triangular grains prefer the weak oxidizing conditions, and medium oxidizing conditions bring in dendritic grains with higher oxygen doping and inhomogenous photoluminescence intensities from edge to interior regions shown in the dendritic grains. These growth rules under different oxidizing conditions are easily generalized to other TMCs, which also show potential for growing specific TMCs with designed oxygen doping levels.
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38

Ornelas, C., J. Lara-Romero, C. Campos-Valadez, C. Leyva-Porras, and F. Paraguay-Delgado. "Morphology Change Study of Molybdenum Oxide from 3D to 2D Particles." Microscopy and Microanalysis 25, S2 (August 2019): 1532–33. http://dx.doi.org/10.1017/s1431927619008390.

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39

Makarenko, Irina, Andrew Fletcher, and Anvar Shukurov. "3D morphology of a random field from its 2D cross-section." Monthly Notices of the Royal Astronomical Society: Letters 447, no. 1 (December 11, 2014): L55—L59. http://dx.doi.org/10.1093/mnrasl/slu169.

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40

Wei, Lai, Erwin A. Vogler, Timothy M. Ritty, and Akhlesh Lakhtakia. "A 2D surface morphology–composition gradient panel for protein-binding assays." Materials Science and Engineering: C 31, no. 8 (December 2011): 1861–66. http://dx.doi.org/10.1016/j.msec.2011.09.001.

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41

Grempel, D. R., and P. Gawiec. "Ground state morphology and excitations of a 2D random XY model." Journal of Magnetism and Magnetic Materials 104-107 (February 1992): 289–90. http://dx.doi.org/10.1016/0304-8853(92)90802-u.

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42

Anas, IY, BO Bamgbose, and Saleh Nuhu. "A comparison between 2D and 3D methods of quantifying facial morphology." Heliyon 5, no. 6 (June 2019): e01880. http://dx.doi.org/10.1016/j.heliyon.2019.e01880.

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43

Yue, Huanxin, Dandan Song, Suling Zhao, Zheng Xu, Bo Qiao, Songquan Wu, and Juan Meng. "Highly bright perovskite light-emitting diodes based on quasi-2D perovskite film through synergetic solvent engineering." RSC Advances 9, no. 15 (2019): 8373–78. http://dx.doi.org/10.1039/c9ra00912d.

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44

Huang, Baobing, Yuchuan Liu, and Zailai Xie. "Biomass derived 2D carbonsviaa hydrothermal carbonization method as efficient bifunctional ORR/HER electrocatalysts." Journal of Materials Chemistry A 5, no. 45 (2017): 23481–88. http://dx.doi.org/10.1039/c7ta08052b.

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45

Jamnig, Andreas, Nikolaos Pliatsikas, Gregory Abadias, and Kostas Sarakinos. "Manipulation of thin metal film morphology on weakly interacting substrates via selective deployment of alloying species." Journal of Vacuum Science & Technology A 40, no. 3 (May 2022): 033407. http://dx.doi.org/10.1116/6.0001700.

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We demonstrate a versatile concept for manipulating morphology of thin (≤25 nm) noble-metal films on weakly interacting substrates using growth of Ag on SiO2 as a model system. The concept entails deployment of minority metallic (Cu, Au, Al, Ti, Cr, and Mo) alloying species at the Ag-layer growth front. Data from in situ and real-time monitoring of the deposition process show that all alloying agents—when deployed together with Ag vapor throughout the entire film deposition—favor two-dimensional (2D) growth morphology as compared to pure Ag film growth. This is manifested by an increase in the substrate area coverage for a given amount of deposited material in discontinuous layers and a decrease of the thickness at which a continuous layer is formed, though at the expense of a larger electrical resistivity. Based on ex situ microstructural analyses, we conclude that 2D morphological evolution under the presence of alloying species is predominantly caused by a decrease of the rate of island coalescence completion during the initial film-formation stages. Guided by this realization, alloying species are released with high temporal precision to selectively target growth stages before and after coalescence completion. Pre-coalescence deployment of all alloying agents yields a more pronounced 2D growth morphology, which for the case of Cu, Al, and Au is achieved without compromising the Ag-layer electrical conductivity. A more complex behavior is observed when alloying atoms are deposited during the post-coalescence growth stages: Cu, Au, Al, and Cr favor 2D morphology, while Ti and Mo yield a more pronounced three-dimensional morphological evolution. The overall results presented herein show that targeted deployment of alloying agents constitutes a generic platform for designing bespoken heterostructures between metal layers and technologically relevant weakly interacting substrates.
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46

Lau, Thomas H. M., John S. Foord, and S. C. Edman Tsang. "2D molybdenum disulphide nanosheets incorporated with single heteroatoms for the electrochemical hydrogen evolution reaction." Nanoscale 12, no. 19 (2020): 10447–55. http://dx.doi.org/10.1039/d0nr01295e.

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47

Lin, Li, Xing Du, Junjie Wang, Hui Chen, Xuan He, Wei Fang, Yang Li, Zhen Chen, and Lei Zhao. "High-pressure vapor-solid transformation of 2D template to derive 2D Co–N–C electrocatalysts for oxygen reduction reaction." Nanotechnology 33, no. 10 (December 13, 2021): 105601. http://dx.doi.org/10.1088/1361-6528/ac3d64.

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Abstract Two-dimensional (2D) cobalt zeolitic imidazolate frameworks (ZIF-67) have attracted significant research interests to synthesize cobalt and nitrogen co-doped carbon-based (Co–N–C) catalyst for oxygen reduction reaction (ORR). However, most of the current synthetic approaches of 2D ZIF-67 are energy-intensive, environmentally hazardous and low-yield. Herein, a feasible and efficient ‘morphology-retaining method via a high-pressure vapor-solid reaction’ are reported to synthesize 2D ZIF-67 nanosheets by using 2D cobalt carbonate hydroxide template. In the strategy, the high-pressure vapor caused by sublimation of 2-Melm and the pores formed from effusion of CO2 during transformation ensure the complete transformation from 2D template to 2D ZIF-67. The corresponding 2D Co–N–C catalyst exhibits comparable ORR electrocatalytic activity and better stability than Pt/C in alkaline media. The present method is expected to offer a feasible and universal way to efficiently synthesize 2D M–N–C catalysts.
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48

Park, Jongyoon, Jiyun Lee, Seongseop Kim, and Jongkook Hwang. "Graphene-Based Two-Dimensional Mesoporous Materials: Synthesis and Electrochemical Energy Storage Applications." Materials 14, no. 10 (May 16, 2021): 2597. http://dx.doi.org/10.3390/ma14102597.

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Graphene (G)-based two dimensional (2D) mesoporous materials combine the advantages of G, ultrathin 2D morphology, and mesoporous structures, greatly contributing to the improvement of power and energy densities of energy storage devices. Despite considerable research progress made in the past decade, a complete overview of G-based 2D mesoporous materials has not yet been provided. In this review, we summarize the synthesis strategies for G-based 2D mesoporous materials and their applications in supercapacitors (SCs) and lithium-ion batteries (LIBs). The general aspect of synthesis procedures and underlying mechanisms are discussed in detail. The structural and compositional advantages of G-based 2D mesoporous materials as electrodes for SCs and LIBs are highlighted. We provide our perspective on the opportunities and challenges for development of G-based 2D mesoporous materials. Therefore, we believe that this review will offer fruitful guidance for fabricating G-based 2D mesoporous materials as well as the other types of 2D heterostructures for electrochemical energy storage applications.
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49

Momeni, Kasra, Yanzhou Ji, and Long-Qing Chen. "Computational synthesis of 2D materials grown by chemical vapor deposition." Journal of Materials Research 37, no. 1 (October 12, 2021): 114–23. http://dx.doi.org/10.1557/s43578-021-00384-2.

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Abstract The exotic properties of 2D materials made them ideal candidates for applications in quantum computing, flexible electronics, and energy technologies. A major barrier to their adaptation for industrial applications is their controllable and reproducible growth at a large scale. A significant effort has been devoted to the chemical vapor deposition (CVD) growth of wafer-scale highly crystalline monolayer materials through exhaustive trial-and-error experimentations. However, major challenges remain as the final morphology and growth quality of the 2D materials may significantly change upon subtle variation in growth conditions. Here, we introduced a multiscale/multiphysics model based on coupling continuum fluid mechanics and phase-field models for CVD growth of 2D materials. It connects the macroscale experimentally controllable parameters, such as inlet velocity and temperature, and mesoscale growth parameters such as surface diffusion and deposition rates, to morphology of the as-grown 2D materials. We considered WSe2 as our model material and established a relationship between the macroscale growth parameters and the growth coverage. Our model can guide the CVD growth of monolayer materials and paves the way to their synthesis-by-design. Graphic abstract
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50

Gopiraman, Mayakrishnan, Kai Wei, Ke-Qin Zhang, Ill-Min Chung, and Ick Soo Kim. "Cultivation of a Cu/HMPC catalyst from a hyperaccumulating mustard plant for highly efficient and selective coupling reactions under mild conditions." RSC Advances 8, no. 9 (2018): 4531–47. http://dx.doi.org/10.1039/c7ra12470h.

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