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Competition between Bipolar Conduction Modes in Extrinsically -Doped MoS: Interaction with Gate Dielectric Matters.
ACS Nano
December 2024
Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea.
With reduced dimensionality and a high surface area-to-volume ratio, two-dimensional (2D) semiconductors exhibit intriguing electronic properties that are exceptionally sensitive to surrounding environments, including directly interfacing gate dielectrics. These influences are tightly correlated to their inherent behavior, making it critical to examine when extrinsic charge carriers are intentionally introduced to the channel for complementary functionality. This study explores the physical origin of the competitive transition between intrinsic and extrinsic charge carrier conduction in extrinsically -doped MoS, highlighting the central role of interactions of the channel with amorphous gate dielectrics.
View Article and Find Full Text PDFGraphdiyne based ZnCdS and NiO dual S-scheme heterojunction boosting photocatalytic hydrogen evolution.
J Colloid Interface Sci
December 2024
School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China. Electronic address:
As a novel carbon-based material with two-dimensional (2D) characteristics, graphdiyne (GDY) shows great potential in constructing active catalytic sites due to its distinctive atomic configuration and sp/sp conjugated hybrid two-dimensional networks. In this study, the layered GDY was synthesized using the ball milling method, and ZnCdS/Graphdiyne/NiO (ZnCdS/GDY/NiO) composite was synthesized by in-situ composite and physical mixing method. The prepared ZnCdS/GDY/NiO has good photostability outstanding performance in photocatalytic hydrogen production.
View Article and Find Full Text PDFSynthesis of ultra-large diameter graphene oxide flakes from natural flake graphite.
Heliyon
December 2024
College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China.
Graphene and its derivatives are widely used in various fields due to their unique two-dimensional lamellar structure. This study aims to synthesize ultra-large graphene oxide (GO) sheets from natural flake graphite and investigate the factors influencing their size. Using a two-intercalation method based on the modified Hummers' method, we address the challenge of intercalating large-diameter graphene oxide by employing a secondary intercalation technique.
View Article and Find Full Text PDFMultiple-quantum magic-angle spinning NMR spectra in the static limit: The I = 3/2 case.
J Chem Phys
December 2024
Department of Chemistry, Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, USA.
A simplified theoretical description of multiple-quantum excitation and mixing for nuclear magnetic resonance of half-integer quadrupolar nuclei is presented. The approach recasts the multiple-quantum nutation behavior in terms of reduced excitation and mixing curves through a scaling of the first-order offset frequency by the quadrupolar coupling constant. The two-dimensional correlation of the static first-order anisotropic line shape to the second-order anisotropic magic-angle-spinning (MAS) line shape is utilized to transform the three-dimensional integral over the three Euler angles into a single integral over the dimensionless first-order offset parameter.
View Article and Find Full Text PDFThe Validity of Radiographic Measurements Compared to 3D-surface Model-Based Measurements in Shoulders with Reverse Total Shoulder Arthroplasty.
J Shoulder Elbow Surg
December 2024
Department of Mechanical & Aerospace Engineering, University of Florida, 330MAE-A P.O. Box 116250, Gainesville, FL, USA 32611.
Background: Postoperative assessment following reverse total shoulder arthroplasty (rTSA) typically involves plain radiographs to evaluate implant positioning parameters, such as humeral distalization and lateralization along with medialization and distalization of the center of rotation (COR). However, the precision of these radiographic measurements remains unclear. This study aimed to validate the accuracy of radiographic two-dimensional (2D) measurements compared to three-dimensional (3D) surface model-based measurements derived from CT data for evaluating postoperative parameters in rTSA.
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