An elastic structure includes a main board, two fixing portions, and a latching arm. Herein, the multiple packetized elementary streams are stored in plural code buffers respectively. The slider unit includes a dustproof cover slidably received in the receiving cavity for sealing the front opening and a pair of springs disposed on the dustproof cover. The movable portion is made of a tube of flexible material and everts when moving to the extended position. Examples of optoelectronic devices that can incorporate detached layers include LEDs, laser diodes, MOSFET transistors, and MISFET transistors, among others. The disclosed implementations may include an array of resonant absorbers that may facilitate spectroscopy, such as, for example, IR related spectrometry.