Rapid Shape Adaptation Reveals Position and Size Invariance in the Object-Related Lateral Occipital (LO) Complex.

NeuroImage ◽  
1998 ◽  
Vol 7 (4) ◽  
pp. S43 ◽  
Author(s):  
R. Malach ◽  
K. Grill-Spector ◽  
T. Kushnir ◽  
S. Edelman ◽  
Y. Itzchak
Keyword(s):  
Shape Adaptation ◽  
Size Invariance

Size invariance in visual number discrimination

1991 ◽  
Vol 53 (4) ◽  
pp. 290-295 ◽  
Author(s):  
J�ri Allik ◽  
Tiia Tuulmets ◽  
Piet G. Vos
Keyword(s):  
Number Discrimination ◽  
Size Invariance ◽  
Visual Number

scholarly journals Intrinsically reversible superglues via shape adaptation inspired by snail epiphragm

2019 ◽  
Vol 116 (28) ◽  
pp. 13774-13779 ◽  
Author(s):  
Hyesung Cho ◽  
Gaoxiang Wu ◽  
Jason Christopher Jolly ◽  
Nicole Fortoul ◽  
Zhenping He ◽  
...  
Keyword(s):  
Adhesion Strength ◽  
Target Surface ◽  
Industrial Applications ◽  
Major Constituent ◽  
Polymer Gel ◽  
Near Surface ◽  
Practical Applications ◽  
Pressure Sensitive Adhesives ◽  
Biomimetic Surfaces ◽  
Shape Adaptation

Adhesives are ubiquitous in daily life and industrial applications. They usually fall into one of two classes: strong but irreversible (e.g., superglues) or reversible/reusable but weak (e.g., pressure-sensitive adhesives and biological and biomimetic surfaces). Achieving both superstrong adhesion and reversibility has been challenging. This task is particularly difficult for hydrogels that, because their major constituent is liquid water, typically do not adhere strongly to any material. Here, we report a snail epiphragm-inspired adhesion mechanism where a polymer gel system demonstrates superglue-like adhesion strength (up to 892 N⋅cm−2) that is also reversible. It is applicable to both flat and rough target surfaces. In its hydrated state, the softened gel conformally adapts to the target surface by low-energy deformation, which is locked upon drying as the elastic modulus is raised from hundreds of kilopascals to ∼2.3 GPa, analogous to the action of the epiphragm of snails. We show that in this system adhesion strength is based on the material’s intrinsic, especially near-surface, properties and not on any near-surface structure, providing reversibility and ease of scaling up for practical applications.

Shape adaptation of quinine in cyclodextrin cavities: NMR studies

2019 ◽  
Vol 21 (13) ◽  
pp. 6925-6934 ◽  
Author(s):  
Jacek Wójcik ◽  
Andrzej Ejchart ◽  
Michał Nowakowski
Keyword(s):  
Nmr Spectroscopy ◽  
Complex Formation ◽  
Nmr Studies ◽  
Shape Adaptation

Complex formation between quinine and natural cyclodextrins (CD) was studied using NMR spectroscopy.

Novel Chiral Structure With Tailored Mechanical Response Exploiting Elastic Instabilities

2016 ◽  
Author(s):  
Falk Runkel ◽  
Giulio Molinari ◽  
Andres F. Arrieta ◽  
Paolo Ermanni
Keyword(s):  
Mechanical Response ◽  
Local Buckling ◽  
Unit Cell ◽  
Periodic Lattice ◽  
Nonlinear Behaviour ◽  
Lattice Structures ◽  
Chiral Structure ◽  
Shape Adaptation ◽  
Elastic Instabilities ◽  
Structural Concept

This paper presents a structural concept that exploits elastic instabilities in novel periodic lattice structures for shape adaptation purposes. The nonlinear behaviour resulting from the occurrence of local buckling is utilised to achieve significant variations in the global structural response of the lattice. For the proposed structural concept, a unit cell is identified and utilised to investigate the mechanical characteristics for the load cases of uniaxial compression, shear, and rotation, conducting nonlinear finite element simulations. The results of the unit cell characterization are compared to the mechanical response of lattice structures under equivalent loading and convergence is achieved for all considered load cases. This paper therefore introduces a novel design concept to achieve selective compliance, especially beneficial for shape adaptation of wing structures.

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