The mechanics of reversible adhesion of the gecko is investigated in terms of the attachment and detachment mechanisms of the hierarchical microstructures on its toe. At the bottom of the hierarchy, we show that a spatula pad of tiny thickness can be well absorbed onto a substrate with a large...
What is a adhesion in science? Adhesion isthe attraction between two dissimilar phases. There is no single theory to explain adhesion, but it is commonly divided into mechanical interlocking and physical and chemical bonding. Most typically adhesion occurs because of the combination of different mecha...
根据划线单词下文 “which is a key feature. It can easily become attached to the skin and be taken off(这是一个关键特点。它可以很容易地附着在皮肤上并被取下)”可知,这种材料具有良好的表面附着力 划线单词和选项D“The ability to stick to a substance(粘在物质上的能力)”和划线单词意思相近。故...
In rodents representations of environmental positions follow a granularity gradient along the hippocampal and entorhinal anterior-posterior axis; with fine-grained representations most posteriorly. To investigate if such a gradient exists in humans, functional magnetic resonance imaging data were acquired ...
It is a technique often used to deposit thin films of semiconductors, CDs, disk drives, and optical devices. Sputtered films exhibit excellent uniformity, density, purity and adhesion. It is possible to produce alloys of precise composition with conventional sputtering, or oxides, nitrites and ...
Irritable bowel syndrome (IBS) is a chronic functional gastrointestinal disorder that is characterized by abdominal pain and an altered defecation pattern. It affects between 5 and 20% of the general population and can seriously impact quality of life. The pathophysiology of IBS is rather complex an...
a marine biologist at the University of Lisbon who researches sea urchin adhesion and was not involved in the study. “They’ve been working for animals for so long, why shouldn’t they work for us?” Santos is also curious to know how the tick detaches from the cement cone and the sk...
What this means is that embryonic stem cells, unlike adult stem cells, can be coaxed into potentially forming almost any other of the hundreds of types of human cells. For example, while a blood stem cell can only make blood, an embryonic stem cell can make blood, bone, skin, brain, an...
Considering this, the typical grammatical modifiers “biodegradable”, “resorbable”, “absorbable”, along with their noun forms used in the decades of scientific research have been reviewed and explained, interdisciplinary in chemistry, ecology, materials science, biology, microbiology, medicine, and ...
Adsorption is defined as the adhesion of a chemical species onto the surface of particles. German physicist Heinrich Kayser coined the term "adsorption" in 1881. Adsorption is a different process fromabsorption, in which a substancediffusesinto aliquidorsolidto form asolution. ...