Attractive glasses

The economically most attractive glass fiber-reinforced plastics for high technical use are, next to RTM and winding technology, etc., semi-products made of SMC and BMC systems. 

Fig. 3 Phase diagram of concentrated particle dispersions in the presence of short-range attractive interaction. Repulsive and attractive glasses are formed at high and low temperatures, respectively. The hatched area represents the reentrant liquid region observed when the temperature is varied at constant volume fraction. (Reproduced from [104] with permission of the author)...

H. Tanaka, J. Meunita, D. Boim, Nontngodic states of charged colloidal suspensions repulsive and attractive glasses and gels. Phys. Rev. E 69(3), 031404 (2(K)4). doi 10.1103/PhysRevE.69. 031404... 

Our main purpose is to compare absorption and luminescence spectra of R(IH) in glasses with the behavior in crystalline compounds and in aqueous solution. In one way, it is surprising how close many of the similarities are, and also how technologically attractive glasses can be as laser materials compared to crystals. It may be noted that the largest-scale terawatt lasers, such as the SHIVA and NOVA systems in Livermore, CA, are neodymium(III) glasses. We summarize most of the major results described in this chapter in seven conclusions ... 

Koumakis N, Petekidis G (2011) Two step yielding in attractive colloids transition from gels to attractive glasses. Soft Matter 7 2456-2470... 

Table 2.4 Attractive glass properties for different applications.

The depletion interaction gives rise to a new glass state in colloids, the attractive glass (Eckert and Bartsch 2002, Pham et al. 2002). The attractive glass, in contrast to the hard-sphere glass, possesses both a repulsive and attractive potential and is therefore a more accurate model of molecular glasses. 

The presence of the attractive glass gives rise to a new phase diagram (Figure 13.13) that accounts for both volume fraction and potential. 

Eigure 13.13 A sketch of state diagram of a colloid-polymer mixture redrawn from Zaccarelli and Poon (2009). Their simulations show that four distinct states exist ergodic fluid nonbonded repulsive glass (hard-sphere glass), bonded repulsive glass (attractive glass) and dense gel. 

Figure 13.14 Snapshots of cooperatively rearranging particles for repulsive glass (a) and attractive glass (b). The large spheres are drawn to scale and represent the 10% fastest particles. The rest of the particles are shown as small dots, reduced in size for clarity. Arrows indicate the direction of motion. (Reprinted with permission from Zhang, Z. et al., 2012. Copyright 2012 by the American Physical Society.)...

Thus, there is the possibility of using vibrational properties to identify regions susceptible to failure (Chen et al. 2011). There is some evidence that this is also true in attractive glasses (Habdas 2012), with preliminary results suggesting that increasing interparticle attractions causes the DOS to decrease (Figure 13.16). 

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