Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Karl R. Amundson"'
Publikováno v:
Thin Solid Films. 426:140-149
Ordering of α , ω -dihexyl- α -quaterthiophene (DH α 4T) thin films on substrates including friction-transferred polytetrafluoroethylene (PTFE) is explored. DH α 4T exhibits a high-temperature mesophase from 81 to 181 °C. Textural analysis reve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::192f5e368240495ae7a9cd42215d3f04
https://doi.org/10.1016/s0040-6090(02)01295-6
https://doi.org/10.1016/s0040-6090(02)01295-6
Autor:
John A. Rogers, Ananth Dodabalapur, Brian Keith Crone, Karl R. Amundson, Ewing Jay Britton, Kirk W. Baldwin, Howard E. Katz, Paul Drzaic, Venkataram Reddy Raju, Valerie Jeanne Kuck, Zhenan Bao
Publikováno v:
Proceedings of the National Academy of Sciences. 98:4835-4840
Electronic systems that use rugged lightweight plastics potentially offer attractive characteristics (low-cost processing, mechanical flexibility, large area coverage, etc.) that are not easily achieved with established silicon technologies. This pap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93b1634c64671ad88fd871b298c6951b
https://doi.org/10.1073/pnas.091588098
https://doi.org/10.1073/pnas.091588098
Autor:
Karl R. Amundson
Publikováno v:
Physical Review E. 58:3273-3279
Surface interactions of liquid crystals at interfaces are crucial for the performance of devices that use liquid crystals. Many dispersions of polymers and liquid crystals for electro-optic applications are made by polymerization-induced phase separa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bed7334e88e42a408b00669e7d547bdf
https://doi.org/10.1103/physreve.58.3273
https://doi.org/10.1103/physreve.58.3273
Autor:
Mohan Srinivasarao, Karl R. Amundson
Publikováno v:
Physical Review E. 58:R1211-R1214
A surface anchoring transition of a nematic at polymer surfaces created by polymerization-induced phase separation is presented. This transition is unusual in that it occurs far from bulk nematic phase transitions and it is tunable across nearly the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be3bb8a6861e4b6b1003b3a537fed5d9
https://doi.org/10.1103/physreve.58.r1211
https://doi.org/10.1103/physreve.58.r1211
Publikováno v:
MRS Bulletin. 20:42-46
Block copolymer melts with a near-symmetric composition can microphase-separate to form a lamellar morphology where unfavorable monomeric interactions are reduced by an antiparallel layering of the polymer chains (see Figure 2, discussed later). The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::804ff8144fff536d1ce292f757c1ea11
https://doi.org/10.1557/s0883769400034928
https://doi.org/10.1557/s0883769400034928
Publikováno v:
Macromolecules. 27:6559-6570
Alignment of lamellar block copolymer microstructure in an electric field was studied. Two mechanisms of alignment are considered: selective electric-field-induced disordering and alignment through movement of defects. The latter mechanism is support
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd763dc07b148faa3dab653212441774
https://doi.org/10.1021/ma00100a047
https://doi.org/10.1021/ma00100a047
Publikováno v:
Macromolecules. 27:6498-6502
In organic inclusion compounds the strong and restrictive polymer-polymer intermolecular interactions of the bulk polymer crystal are replaced with the less limiting geometrical constraints of the channel walls. This facilitates the study of isolated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14a74d38d02b83133833808f05dc040d
https://doi.org/10.1021/ma00100a038
https://doi.org/10.1021/ma00100a038
Publikováno v:
Chemistry of Materials. 6:1726-1736
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13520ba7e121a350ece58e3c89513e0e
https://doi.org/10.1021/cm00046a027
https://doi.org/10.1021/cm00046a027
Publikováno v:
Macromolecules. 26:2698-2703
The kinetics of alignment of block copolymer microstructure in an electric field has been studied. The rate of alignment obeys a simple time-temperature-field superposition law when thermal history is well-controlled. Thermal history also strongly af
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9b706d38cd571a801b2b719578d82b8
https://doi.org/10.1021/ma00063a010
https://doi.org/10.1021/ma00063a010
Autor:
Karl R. Amundson, Eugene Helfand
Publikováno v:
Macromolecules. 26:1324-1332
The quasi-static mechanical properties of lamellar blocks copolymer microstructure in weak segregation are calculated. In analogy with the smectic A liquid crystal phase, the mechanical properties are represented in terms of a layer compressibility a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c6a557ecfb1e4bc9009945b65b44425
https://doi.org/10.1021/ma00058a022
https://doi.org/10.1021/ma00058a022