Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Jae Shik Choi"'
Autor:
Taehwan Lim, Seoyeon Won, In-Woo Nam, Jae Shik Choi, Chae Hwa Kim, Tae Hee Kim, Jung Han Kim, Sang Young Yeo, Huanan Zhang, Byeong Jin Yeang
Publikováno v:
ACS Sustainable Chemistry & Engineering. 10:8815-8824
Publikováno v:
Journal of the Korea Institute of Military Science and Technology. 16:405-413
Publikováno v:
IEEE Transactions on Advanced Packaging. 23:681-685
To overcome drawbacks and limitations of planar lightwave circuit based modules for bidirectional communications, such as the demand for several chips and in consequence more packaging efforts, we have recently developed a novel optical coupling tech
Publikováno v:
Scripta Metallurgica et Materialia. 32:595-600
The PbTe intermetallic compound could be fabricated by mechanical alloying of elemental Pb and Te powders for 2 minutes at ball-to-powder weight ratio of 2 : 1. The lattice parameter of PbTe processed by mechanical alloying, 0.6462 nm, was in excelle
Autor:
Lee Sang-Hwan, Jae-Shik Choi, Jong-Deog Kim, Seung-Goo Kang, Hee-Tae Lee, Nam Hwang, Min-Kyu Song, Gwan-Chong Joo
Publikováno v:
Technical Digest. CLEO/Pacific Rim '99. Pacific Rim Conference on Lasers and Electro-Optics (Cat. No.99TH8464).
Conventionally, optical communication modules for subscriber have been composed of transmitter and receiver as separated or combined requiring two lines of optical fibers to constitute a network. To realize the fiber-to-the-home (FTTH), it is necessa
Publikováno v:
XVI ICT '97. Proceedings ICT'97. 16th International Conference on Thermoelectrics (Cat. No.97TH8291).
Bi-doped n-type PbTe powders were fabricated by mechanical alloying and melting/grinding to compare the thermoelectric properties of the alloys with powder processing methods. Hot pressing of the PbTe powders was conducted at 650/spl deg/C and 750/sp
Publikováno v:
XVI ICT '97. Proceedings ICT'97. 16th International Conference on Thermoelectrics (Cat. No.97TH8291).
(Bi/sub 1-x/Sb/sub x/)/sub 2/Te/sub 3/ (0.75/spl les/x/spl les/0.85) thermoelectric materials were fabricated by mechanical alloying and hot pressing at 550/spl deg/C for 30 minutes with and without reduction treatment of the mechanically alloyed pow
Publikováno v:
XVI ICT '97. Proceedings ICT'97. 16th International Conference on Thermoelectrics (Cat. No.97TH8291).
To investigate the effects of solid solution alloying on thermoelectric properties of PbTe-based thermoelectric materials, 0.3 wt% Bi-doped (Pb/sub 1-x/Ge/sub x/)Te alloy powders (0/spl les/x/spl les/0.15) were fabricated by "melting/grinding" proces
Autor:
Mu Hee Cho, Jae-Shik Choi, Jamshid Sangirov, Byueng-Su Yoo, Gwan-Chong Joo, Jong-Hun Kim, Hyo-Hoon Park, Tae-Woo Lee, Do-Hoon Kim, Nguyen T. H. Nga, Ikechi Augustine Ukaegbu
Publikováno v:
OPTICS EXPRESS(22): 2
A 40 Gb/s bidirectional optical link using four-channel optical subassembly (OSA) modules and two different wavelengths for the up-and down-link is demonstrated. Widely separated wavelengths of 850 nm and 1060 nm are used to reduce the optical crosst
Publikováno v:
MRS Proceedings. 478
Thermoelectric properties of polycrystalline Bi2(Te1−xSex)3 (0.05 ≤ x ≤ 0.25), fabricated by mechanical alloying and hot pressing, have been investigated. Formation of n-type Bi2(Te0.9 Se0.1)3 alloy powders was completed by mechanical alloying