Optics and photonics in nature: general discussion.
Optics and photonics in nature: general discussion.
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自然界中的光学和光子学：一般讨论。
DOI：
10.1039/d0fd90013c
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发表时间：
2020
影响因子：
3.4
通讯作者：
Arwin H
中科院分区：
文献类型：
--
作者：
Arwin H
克里斯蒂安·库特纳对皮特·武库西奇的论文进行了一般性讨论：你指出了有序、准有序和无序系统之间的区别。但这与短期和长期秩序有什么关系？例如，一些密集排列到最近的邻居的距离可能非常均匀，但在较长的距离上秩序较差。你认为随机的紧密堆积的结构是准有序的还是无序的(混沌)？皮特·武库西奇回答道：谢谢你提出了这个非常有用的问题，克里斯蒂安。我们确实看到许多系统具有很强的“局域”秩序，例如，在几十个或更大的局域中，晶格常数的大小：但这些相邻的域是面向多重的。通过这些方式，我们得到了您所描述的短程有序，但这并没有延伸到很远。例如，在剑形拟翅目的区域中的3D结构，或在鳞翅目和其他节肢动物复眼的小眼面上发现的反反射乳头射线。我们应该把这些描述为有序的，还是准有序的？我认为你的问题很大程度上与语义学有关：对我来说，我认为从有序到准有序再到无序的弧线是一个真正的滑动标度，横跨多变量空间。在这一点上，我们决定de某物是从标号有序的还是准有序的转变的，这有点主观。
Christian Kuttner opened a general discussion of the paper by Pete Vukusic: You have pointed out the differences between ordered, quasi-ordered and disordered systems. But how does this relate to the short-and long-range order? For example, some densely packed arrangements may have very uniform distances to the nearest neighbour, but poor order at longer distances. Would you consider a random close-packed structure as quasi-ordered or disordered (chaotic)?Pete Vukusic replied: Thank you for this really useful question Christian. We do see many systems that have a strong" local" order, for instance in localised domains that are a few tens or more, lattice constants in size: but then these neighbouring domains are multiply oriented. In these ways we have the short range order you describe, but this does not extend very far. Examples include the 3D structures in the domains of Parides sesostris, or in the antire ective nipplearrays found on the ommatidial surfaces of lepidopteran and other arthropod compound eyes. Should we describe these as ordered, or quasi ordered? Much of your question relates to semantics I think: for me I think the arc leading from ordered through quasi-ordered to disordered is a genuine sliding scale, across multi-variable space. The point at which we decide de nitively whether something transitions from having the label ordered or quasi-ordered, is a little subjective.