PbSeTe-based quantum dot superlattice structures grown by molecular beam epitaxy have been investigated for applications in thermoelectrics. We demonstrate improved cooling values relative to the conventional bulk (Bi,Sb)2(Se,Te)3 thermoelectric materials using a n-type film in a one-leg thermoelectric device test setup, which cooled the cold junction 43.7 K below the room temperature hot junction temperature of 299.7 K. The typical device consists of a substrate-free, bulk-like (typically 0.1 millimeter in thickness, 10 millimeters in width, and 5 millimeters in length) slab of nanostructured PbSeTe/PbTe as the n-type leg and a metal wire as the p-type leg.

Letter L1

In a sample of 415 predominantly minority women with physical disabilities recruited from private and public specialty outpatient clinics, we examined experiences of physical, sexual, and disability-related abuse within the past year and its associations with demographic, disability, and psychosocial characteristics. Logistic regression analyses identified 27% of the variance and indicated that women with disabilities who were younger, more educated, less mobile, more socially isolated, and who had higher levels of depression may have a higher likelihood of having experienced abuse in the past year. This model correctly identified 84% of the abused women with disabilities. Questions of directionality, the role of disability, and validity testing are discussed.