Frozen concentration fluctuations in a poly(N-isopropyl acrylamide) gel studied by neutron spin echo and small-angle neutron scattering
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作者:
Koizumi, S
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Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, JapanJapan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
Koizumi, S
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Monkenbusch, M
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机构:Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
Monkenbusch, M
Richter, D
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机构:Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
Richter, D
Schwahn, D
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机构:Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
Schwahn, D
Farago, B
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机构:Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
Farago, B
Annaka, M
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机构:Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
Annaka, M
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[1] Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
By employing neutron spin echo and small-angle neutron scattering, we determined the structure factor of the frozen concentration fluctuations on nano-length scales in a swollen poly(N-isopropyl acrylamide) gel. The frozen contribution, showing a plateau at the low scattering wavenumber q (< 0.02 Angstrom(-1)) and a rapid decrease close to q(-4) at high q (> 0.02 Angstrom(-1)), is intimately related to the abnormal butterfly scattering pattern appearing at low q under deformation.