DYNAMICS OF WEAKLY CONNECTED SOLIDS - SILICA AEROGELS

被引：37
|
作者：
SCHAEFER, DW [1 ]
BRINKER, CJ [1 ]
RICHTER, D [1 ]
FARAGO, B [1 ]
FRICK, B [1 ]
机构：
[1] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE
来源：
PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 19期
关键词：
D O I：
10.1103/PhysRevLett.64.2316
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Apply neutron spin-echo spectroscopy, we investigate low-energy vibrational excitations in a series of silica aerogels of varying connectivity. Connectivity is adjusted both by precursor solution chemistry and by heat treatment. Polymeric aerogels show fractonlike densities of states, whereas colloidal materials exhibit a peak.
引用
收藏
页码：2316 / 2319
页数：4
相关论文
共 50 条
  • [21] Geometric origin of excess low-frequency vibrational modes in weakly connected amorphous solids
    Wyart, M
    Nagel, SR
    Witten, TA
    EUROPHYSICS LETTERS, 2005, 72 (03): : 486 - 492
  • [22] WEAKLY CONNECTED SUBSETS
    Duszynski, Zbigniew
    MISSOURI JOURNAL OF MATHEMATICAL SCIENCES, 2009, 21 (02) : 111 - 119
  • [23] Simulating silica aerogels with a coarse-grained flexible model and langevin dynamics
    Gelb, Lev D.
    JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (43): : 15792 - 15802
  • [24] Structure and mechanical properties of silica aerogels and xerogels modeled by molecular dynamics simulation
    Murillo, John S. Rivas
    Bachlechner, Martina E.
    Campo, Fritz A.
    Barbero, Ever J.
    JOURNAL OF NON-CRYSTALLINE SOLIDS, 2010, 356 (25-27) : 1325 - 1331
  • [25] Epoxy crossilinked silica aerogels (X-aerogels).
    Fabrizio, E
    Ilhan, F
    Meador, MAB
    Johnston, C
    Leventis, N
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2004, 227 : U835 - U835
  • [26] Aerogels Solids lighter than air
    Crystall, Ben
    NEW SCIENTIST, 2014, 224 (2990) : 39 - 39
  • [27] OPTICAL INVESTIGATIONS OF SILICA AEROGELS
    WANG, P
    KORNER, W
    EMMERLING, A
    BECK, A
    KUHN, J
    FRICKE, J
    JOURNAL OF NON-CRYSTALLINE SOLIDS, 1992, 145 (1-3) : 141 - 145
  • [28] Clustering-Based Model Reduction of Laplacian Dynamics With Weakly Connected Topology
    Cheng, Xiaodong
    Scherpen, Jacquelien M. A.
    IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 2020, 65 (10) : 4393 - 4399
  • [29] Silica modified cellulosic aerogels
    Litschauer, Marco
    Neouze, Marie-Alexandra
    Haimer, Emmerich
    Henniges, Ute
    Potthast, Antje
    Rosenau, Thomas
    Liebner, Falk
    CELLULOSE, 2011, 18 (01) : 143 - 149
  • [30] Adsorption of drugs on silica aerogels
    Smirnova, I
    Mamic, J
    Arlt, W
    LANGMUIR, 2003, 19 (20) : 8521 - 8525
12345