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Soft artificial electroreceptors for non-contact spatial perception
W.J. Song(송원준),Y. Lee(이영훈),Y. Jung(정연수),Y.-W. Kang(강용우),J. Kim(김준형),J.-M. Park(박재만),Y.-L. Park(박용래),H.-Y. Kim(김호영),J.-Y. Sun(선정윤) 한국생산제조학회 2021 한국생산제조시스템학회 학술발표대회 논문집 Vol.2021 No.7
Elasmobranch fishes, such as sharks, skates and rays, use a network of electroreceptors distributed on their skin to locate adjacent prey. The receptors can detect the electric field generated by the biomechanical activity of the prey. By comparing the intensity of the electric fields sensed by each receptor in the network, the animals can perceive the relative positions of the prey without making physical contact. Inspired by this capacity for prey localization, we developed a soft artificial electroreceptor that can detect the relative positions of nearby objects in a non-contact manner by sensing the electric fields that originate from the objects. By wearing the artificial receptor, one can immediately receive spatial information of a nearby object via auditory signals. The soft artificial electroreceptor is expected to expand the ways we can perceive space by providing a new sensory modality that did not evolve naturally in human beings.
Hgo07Cd0.3Te 박막의 LPE 성장시 성장시간에 따른 표면형상의 변화
김재묵,송원준,서상희,임성욱,최인훈,문성욱 대한금속재료학회(대한금속학회) 1990 대한금속·재료학회지 Vol.28 No.2
HgCdTe is the most widely used material for infrared photodetectors. HgCdTe epi-layers were grown on CdTe substrates with (111) orientation, using a slider LPE(Liquid Phase Epitaxy) technique. The change of surface morphology during LPE growth of Hg_(0.7)Cd_(0.3)Te was investigated. The wave-like surface at the initial stage of growth has transformed gradually to the terrace-like surface and the terrace width has increased with increasing growth time. Infrared tansmission was used to determine the composition of HgCdTe epi-layers.
수직 Bridgman 법에 의한 CdTe 단결정 성장시 성장속도가 전위 밀도와 분포에 미치는 영향
김재묵,송원준,서상희,임성욱,최인훈 대한금속재료학회(대한금속학회) 1988 대한금속·재료학회지 Vol.26 No.8
CdTe single crystals were grown by a vertical Bridgman method. The growth rate was varied between 1.1 and 5.4 ㎜/hr with maintaining the temperature gradient of 16℃/㎝ at the solid-liquid interface. Etch-pit structures of CdTe single crystals were investigated. The dislocation density was larger and the subgrain size was smaller at the surface and bottom of the crystal. With the increasing growth rate, the dislocation density gets larger and the subgrain size becomes smaller The thermal stress, which is supposed to build up during the solidification process, can explain our results.