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Morphogenesis02:19

Morphogenesis

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Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
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Plastic Deformations01:19

Plastic Deformations

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Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
175
Surface Tension and Surface Energy01:16

Surface Tension and Surface Energy

1.8K
When a paint brush is immersed in water, the bristles wave freely inside the water. When it is taken out, the bristles stick together. The reason behind this effect is surface tension.
Consider a beaker filled with liquid. The bulk molecules in the liquid experience equal attractive forces on all sides with the surrounding molecules. However, the surface molecules experience a net attractive force downward due to the bulk molecules. The surface of the liquid behaves like a stretched membrane,...
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Surface Tension of Fluid01:22

Surface Tension of Fluid

443
Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
Surface tension varies...
443
Plastic Deformations of Members with a Single Plane of Symmetry01:21

Plastic Deformations of Members with a Single Plane of Symmetry

119
When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles
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ダイナミックに再プログラム可能な表面で,形状は自己進化する.

Yun Bai1, Heling Wang2,3,4,5,6, Yeguang Xue7,8,9

  • 1Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, USA.

Nature
|September 21, 2022
PubMed
まとめ
この要約は機械生成です。

動的な形状変化を可能にする 新しいメタ表面を開発しました このソフトマテリアシステムは 再プログラム可能なローレンツ力を用いて 3Dの形状を 素早く正確に変化させ 現在のソフトマテリア技術の限界を 克服しています

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Shape Memory Polymers for Active Cell Culture
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Shape Memory Polymers for Active Cell Culture

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関連する実験動画

Last Updated: Aug 28, 2025

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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles

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Four-Dimensional Printing of Stimuli-Responsive Hydrogel-Based Soft Robots
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Shape Memory Polymers for Active Cell Culture
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科学分野:

  • 柔らかい物質の物理
  • 材料科学
  • ロボットとソフトマシン

背景:

  • ダイナミックな形状を変化させる 柔らかい材料は 生物や新興技術 例えば 柔らかい機械や 柔軟な電子機器や スマート医薬品にとって 極めて重要です
  • 既存の反応性のある柔らかい物質は形を変えることができますが 自然なプロセスに必要な連続的な変形能力がなく 応用が困難です
  • 製造後の形状の再プログラミングは,複雑な物理と環境の混乱により,決定的逆設計と制御を制限します.

研究 の 目的:

  • ダイナミックな形状変容能力を持つ 新しいメタ表面を導入する
  • 柔らかい物質のシステムにおける 複雑で連続した形状の変容を 示すために
  • 先進的なアプリケーションのソフト素材のデータ駆動設計と正確な制御を可能にします.

主な方法:

  • フィラメント状の金属痕跡を用いた機械的なメタ表面の製造.
  • 静的な磁場における電流によって生成される再プログラム可能な分散ロレンツ力による駆動.
  • インサイトステレオ画像フィードバック戦略の実装,デジタル制御されたアクチュエーションスキームで,最適化アルゴリズムによって導かれる.

主要な成果:

  • メタサーフェスは 複雑なダイナミックなモルフィング能力を示し 応答時間は0.1秒未満です
  • このシステムは高精度の3D形状を 幅広いターゲット形状に変形させました
  • メタ表面は 外部と内部の乱れにうまく適応し 形状の忠誠性を維持しました

結論:

  • 開発された機械的なメタ表面は 現在の柔らかい物質の変異の限界を克服します
  • 柔軟な素材の形状の正確な制御と再プログラミングを可能にします.
  • この研究は 柔軟な機械や 電子機器や 動的な形状変化を必要とする 医学における先進的な応用への道を開きます