Results 141 to 150 of about 1,835,677 (289)

Examination of 5th Grade Students' Levels of Geometric Thinking in Terms of Some Variables

open access: yes, 2010
The purpose of the study is to determine the 5th grade primary students' levels of geometric thinking and examine the students' levels of geometric thinking in terms of gender, computer usage, attending preschool education and parents' education level ...
Fidan, Yucel, TÜRNÜKLÜ, ELİF
core   +1 more source

Poisson's Ratio‐Driven Control of Myogenic Differentiation and Maturation in Auxetic Metamaterials under Dynamic Mechanical Stimulation

open access: yesAdvanced Functional Materials, EarlyView.
This study explored how innovative “auxetic” scaffolds, which expand when stretched, influence skeletal muscle development. Researchers cultured muscle cells on different scaffold designs and applied repeated stretching over 10 days. They found that scaffold geometry affected muscle cell differentiation and fiber formation.
Maria Kalogeropoulou   +5 more
wiley   +1 more source

Hydrogel‐Based Method for High‐Resolution Measurements of Contact Mechanics in Rapid Biological Adhesives: A Case Study in Cuttlefish Tentacle Strikes

open access: yesAdvanced Functional Materials, EarlyView.
Cuttlefish and squid can catch their prey within milliseconds using specialized tentacles and suckers. The physics of how the suckers can attach so quickly has remained a mystery given the technical challenges of studying them in vivo. In this publication, we develop a hydrogel that retains imprints of the suckers in order to estimate the forces they ...
Alexander Koehnsen   +4 more
wiley   +1 more source

Multi‐Energy Coupling in Hierarchical Textiles for Photo‐Thermal‐Electric Conversion

open access: yesAdvanced Functional Materials, EarlyView.
This study develops a V‐shaped sandwich evaporator via hierarchical heat‐flow management to resolve constraints on energy utilization and heat allocation in solar evaporation‐thermoelectric systems. The device achieves an evaporation rate of 2.18 kg m−2 h−1 and a peak power density of 224.15 mW m−2, providing an effective strategy for off‐grid solar ...
Xiang Xu   +7 more
wiley   +1 more source

Architected Bio‐Based Iontronic Skin With Dual‐Mode Pressure and Strain Sensing

open access: yesAdvanced Functional Materials, EarlyView.
Bio‐based acrylates in combination with an ionic liquid create 3D‐printed ionogels with compositionally tuneable mechanics and ionic conductivity. Gyroid architectures amplify low‐pressure sensitivity while preserving robust strain sensing, enabling dual‐mode detection of pressure and deformation.
Maksims Jurinovs   +8 more
wiley   +1 more source

Biodegradable Conductors for Implantable and Wearable Transient Bioelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Biodegradable conductors are essential building blocks for transient bioelectronics, enabling temporary sensing, stimulation, and energy transfer while eliminating the need for device retrieval. This review summarizes biodegradable metals, conducting polymers, ionic conductors, and conductive composites, highlighting degradation mechanisms, material ...
Yicheng Zhu, Yijun Liu, Naoji Matsuhisa
wiley   +1 more source

One‐Component Carbon Dot Photoinitiator Enables High‐Fidelity Digital Light Processing 3D Printing With Improved Mechanical Resistance

open access: yesAdvanced Functional Materials, EarlyView.
Furfural carbon dots functionalized with acylphosphine oxide photosensitive groups (CD‐PO PI) demonstrate potential as one‐component photoinitiators for digital light processing (DLP) 3D printing. Compared to conventional diphenyl(2,4,6‐trimethylbenzoyl)phosphine oxide (TPO), CD‐PO PI offers improved printing resolution, resin toughness, and biological
Xiaotong Li   +10 more
wiley   +1 more source

The impact of the "treasure game" on geometric thinking and post-learning mood in first-grade children. [PDF]

open access: yesMedicine (Baltimore)
Chikha AB   +8 more
europepmc   +1 more source

Simultaneous Reduction of Silver and Indium in Silicon Heterojunction Solar Cells via Contact Transport Engineering

open access: yesAdvanced Functional Materials, EarlyView.
Integrating Ag‐lean Cu@Ag metallization with an In‐lean ITO/SnOX transparent conductive oxide maintains high silicon heterojunction solar cell efficiency with only a slight efficiency penalty while reducing material cost by more than 65%. The study highlights the benefits of jointly optimizing metallization and transparent conductive oxide design to ...
Lizhi Sun   +12 more
wiley   +1 more source

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