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We used thin-film differential scanning calorimetry to investigate the melting of isolated polyethylene single crystals with lamellar thicknesses of 12 6 1 nm. We observed the melting of as few as 25 crystals. Over a wide number of crystals (25–2000 crystals), the heat of fusion was 40% larger than the bulk value. The melting temperature of the isolated(More)
We report a study of the thermodynamic properties of indium clusters on a SiNx surface during the early stages of thin film growth using a sensitive nanocalorimetry technique. The measurements reveal the presence of abnormal discontinuities in the heat of melting below 100 ±C. These discontinuities, for which temperature separation corresponds to a spatial(More)
The melting behavior of 0.1–10-nm-thick discontinuous indium films formed by evaporation on amorphous silicon nitride is investigated by an ultrasensitive thin-film scanning calorimetry technique. The films consist of ensembles of nanostructures for which the size dependence of the melting temperature and latent heat of fusion are determined. The(More)
We introduce a scanning calorimeter for use with a single solid or liquid sample with a volume down to a few nanoliters. Its use is demonstrated with the melting of 52 nL of indium, using heating rates from 100 to 1000 K/s. The heat of fusion was measured to within 5% of the bulk value, and the sensitivity of the measurement was 67 mW. The heat of(More)
By using a Micro-Electro-Mechanical System (MEMS) device, the nanocalorimeter, it was possible to investigate the melting of isolated polyethylene (PE) single crystals grown from solution. Atomic force microscopy (AFM) was used to obtain an idea of the morphology and to determine thickness measurements. Transmission electron microscopy (TEM) was used to(More)
This paper examines the mental health status of 945 Chinese older people who are in need of long term care services in Hong Kong. It was found that for those aged respondents who are already waiting for admission to infirmary, over 59.3% were already living in private aged homes, and only as few as 17.8% of these applicants were still living in their own(More)
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