Results 91 to 100 of about 271,940 (302)

Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis

Advanced Functional Materials, EarlyView.
An all‐optical method is presented for quantifying the density of boron vacancy spin defects in hexagonal boron nitride (hBN). By correlating Raman and photoluminescence signals with irradiation fluence, defect‐induced Raman modes are identified and established an relationship linking optical signatures to absolute defect densities. This enables direct
Atanu Patra, Paul Konrad, Andreas Sperlich, Timur Biktagirov, Wolf Gero Schmidt, Lesley Spencer, Igor Aharonovich, Sven Höfling, Vladimir Dyakonov   +8 more
wiley   +1 more source

Exploration of Mathematical Values on Traditional Umbrellas in the Alas Indigenous Community in Southeast Aceh

Journal of Mathematics Instruction, Social Research and Opinion
This study explores ethnomathematics embedded in the forms and motifs of the Payung Mesikhat, a cultural symbol of the Alas Indigenous community in Darul Amin Village, Southeast Aceh Regency.
Dinda Dinda, Machrani Adi Putri Siregar
doaj   +1 more source

The role of frontal and parietal cortex in the performance of gifted and average adolescents in a mental rotation task.

PLoS ONE, 2020
Visual-spatial abilities are usually neglected in academic settings, even though several studies have shown that their predictive power in science, technology, engineering, and mathematics domains exceeds that of math and verbal ability.
Renata Figueiredo Anomal, Daniel Soares Brandão, Silvia Beltrame Porto, Sóstenes Silva de Oliveira, Rafaela Faustino Lacerda de Souza, José de Santana Fiel, Bruno Duarte Gomes, Izabel Augusta Hazin Pires, Antonio Pereira   +8 more
doaj   +1 more source

Developing student spatial ability with 3D software applications

, 2007
This paper reports on the design of a library of software applications for the teaching and learning of spatial geometry and visual thinking. The core objective of these applications is the development of a set of dynamic microworlds, which enables (i ...
Boytchev, Pavel, Christou, Constantinos, Jones, Keith, Matos, João Filipe, Mousoulides, Nicholas, Pitta-Pantazi, Demetra, Pittalis, Marios, Sendova, Evgenia, Zachariades, Theodossios   +8 more
core  

A mathematical approach to Wick rotations

, 2020
In this thesis we define Wick-rotations mathematically using pseudo-Riemannian geometry, and relate Wick-rotations to real geometric invariant theory (GIT). We discover some new results concerning the existence of Wick rotations (of various signatures).
openaire   +1 more source

Synthetic Antiferromagnetic Designer Nanodisks for High‐Performance Magnetic Separation

Advanced Healthcare Materials, EarlyView.
Micromagnetic‐modeling‐based design and scalable fabrication of synthetic antiferromagnet (SAF) magnetic disk particles (MDPs) using sputter deposition enable high‐performance magnetic separation. The SAF MDPs achieve high colloidal stability and magnetic responsiveness and enable efficient magnetic separation, outperforming conventional particles ...
Subas Scheibler, Sebastian Habermann, Alexander Gogos, Santiago Helbig, Lukas R. H. Gerken, Anna L. Neuer, Vera M. Kissling, Michal Krupinski, Mohammad Alinezhadfar, Rowena Crockett, Nico Kummer, Erik M. Mayr, Dieter Süss, Hans J. Hug, Inge K. Herrmann   +14 more
wiley   +1 more source

Guides for Developing Hundreds of Novel Chiral MXenes and MBenes Nanosheets/Quantum Dots for Next‐Generation Chiral Engineered Biomaterials Applications

Advanced Healthcare Materials, EarlyView.
The emerging field of MXene/MBene materials has progressed rapidly, advancing diverse research fields, including biomedical engineering, biomedicine, agriculture, and the environment. This nanobiotechnology can tackle longstanding challenges in these areas.
Alireza Rafieerad, Ahmad Amiri
wiley   +1 more source

Seeing inside the Body Using Wearable Sensing and Imaging Technologies

Advanced Healthcare Materials, EarlyView.
This review explores wearable technologies for noninvasive internal health monitoring. It categorizes approaches into indirect sensing (e.g., bioelectrical and biochemical signals) and direct imaging (e.g., wearable ultrasound and EIT), highlighting multimodal integration and system‐level innovation toward personalized, continuous healthcare.
Sumin Kim, Seunghun Han, Sehwan Park, Jahyun Koo   +3 more
wiley   +1 more source

A derivation of coincidence relations utilizing quaternion and matrix based on the hexagonal lattice for material engineers

International Journal of Mathematics for Industry, 2019
Grain-oriented silicon steel is mainly used as the core material of transformers, and it is manufactured by applying secondary recrystallization. The driving force of this process is the grain boundary energy, based on the nature of the grain boundary ...
Tomoji Kumano, Junichi Nakagawa
doaj   +1 more source

Geometry‐Guided Osteogenesis in Bone‐on‐a‐Chip Systems Using Triply Periodic Minimal Surface Scaffolds

Advanced Healthcare Materials, EarlyView.
This study presents a bone‐on‐a‐chip platform incorporating TPMS scaffolds to study geometry‐dependent osteogenesis under dynamic flow. By tuning pore shape and solidity, it precisely controls mechanical cues, revealing how topological features and shear stress affect osteogenic differentiation and matrix formation.
Donggyu Kim, Giheon Ha, Minseok Kim, Minjin Kwak, Han‐Jun Kim, Junmin Lee   +5 more
wiley   +1 more source