Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Urszula Dettlaff-Weglikowska"'
Publikováno v:
Crystals, Vol 8, Iss 6, p 237 (2018)
Chemical modification by co-solvents added to [6,6]-Phenyl-C71 butyric acid methyl ester, commonly known as an n-type semiconducting fullerene derivative PC70BM, is reported to change the electrical and thermoelectric properties of this system. Power
Externí odkaz:
https://doaj.org/article/159674ccdf8f4b2f93072456a62f4c4f
Publikováno v:
Crystals, Vol 7, Iss 10, p 292 (2017)
Conjugated polymers are considered for application in thermoelectric energy conversion due to their low thermal conductivity, low weight, non-toxicity, and ease of fabrication, which promises low manufacturing costs. Here, an investigation of the the
Externí odkaz:
https://doaj.org/article/aafe36dab3d542ffab6970082744151d
Autor:
Jae Woo Lee, Min-Kyu Joo, Urszula Dettlaff-Weglikowska, Hoyeol Yun, Ho Kyun Jang, Junhee Choi, Gyu Tae Kim, Jun Eon Jin, Siegmar Roth, Sangwook Lee, Byung-Chul Lee, Ajeong Choi
Publikováno v:
ACS Applied Materials & Interfaces. 8:18513-18518
In this work, graphene field effect transistors (FETs) were fabricated on a trench structure made by carbonized poly(methylmethacrylate) to modify the graphene surface. The trench-structured devices showed different characteristics depending on the c
Autor:
Junhee Choi, Mingxing Piao, Min-Kyu Joo, Jong Mok Shin, Urszula Dettlaff-Weglikowska, Young Sun Moon, Gyu Tae Kim
Publikováno v:
RSC Advances. 5:78099-78103
We report on p-type and n-type thermoelectric (TE) materials made of single-walled carbon nanotube (SWCNT) networks incorporated into the cellulose fiber structure of a common packaging paper. This leads the paper to possess both mechanical flexibili
Autor:
Yung Woo Park, Sung Won Kim, Urszula Dettlaff-Weglikowska, Sung Ho Jhang, Young Gyu You, Tae Woo Uhm, Seung Hyun Lee
Publikováno v:
Synthetic Metals. 198:84-87
We have investigated Hall coefficient and magnetoresistance in thin films of single-walled carbon nanotubes, prepared in four different ways. Hall voltages are linear for all samples in magnetic fields up to 6 T, and the measured carrier density lies
Autor:
Mireille Mouis, Ho Kyun Jang, Gerard Ghibaudo, Min-Kyu Joo, Gary P. Kennedy, Gyu Tae Kim, Mingxing Piao, Junhong Na, Yun Jeong Kim, Siegmar Roth, Urszula Dettlaff-Weglikowska, Wung Yeon Kim
Publikováno v:
Journal of Physical Chemistry C
Journal of Physical Chemistry C, American Chemical Society, 2014, 118 (46), pp.26454-26461. ⟨10.1021/jp505682f⟩
Journal of Physical Chemistry C, American Chemical Society, 2014, 118 (46), pp.26454-26461. ⟨10.1021/jp505682f⟩
International audience; The thermoelectric power (TEP) of single walled carbon nanotube (SWCNT) thin films in pure metallic SWCNT (m-SWCNT) and pure semiconducting SWCNT (s-SWCNT) networks as well as in m- and s-SWCNT mixtures is investigated. The TE
Publikováno v:
physica status solidi (b). 250:2529-2534
This report demonstrates application of expanded graphite (ExG) for thermoelectric energy conversion, where it serves as a filler for both p- and n-type organic materials. Thin ExG composite films showing improved thermoelectric properties were prepa
Autor:
Siegmar Roth, Mingxing Piao, Junhong Na, Jaewan Choi, Urszula Dettlaff-Weglikowska, Gary P. Kennedy, Gyu-Tae Kim, Jae Sung Kim
Publikováno v:
Carbon. 62:430-437
We prepared and characterized flexible thermoelectric (TE) materials based on thin films of single-walled carbon nanotube (SWCNT) composites with polyvinylalcohol. While pristine SWCNTs incorporated in a polymer matrix generated a p-type TE material,
Autor:
Sangwook Lee, Roland Wiesendanger, O. Pietzsch, Suklyun Hong, Jong Kwon Lee, Gary P. Kennedy, Shiro Yamazaki, Urszula Dettlaff-Weglikowska, Jinwoo Park, Gyu Tae Kim, Siegmar Roth, Hoyeol Yun
Publikováno v:
Nano Letters. 13:3494-3500
A periodically modulated graphene (PMG) generated by nanopatterned surfaces is reported to profoundly modify the intrinsic electronic properties of graphene. The temperature dependence of the sheet resistivity and gate response measurements clearly s
Publikováno v:
physica status solidi c. 10:1183-1187
We investigated the interaction of chemical materials with flexible graphite foils which were fabricated from the expanded graphite (EG) flakes by mechanical rolling and compressing. A variety of performed experiments demonstrated that the electrical