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BaFe₁₂O₁₉ ferrite thick films were screen-printed and sintered at 1150°C under pressure (hot press sintering). The effects of the hot press sintering on the properties of barium hexaferrite thick films were investigated. The X-ray diffraction pattern shows improvement of the (00l) texture under pressure. The porosity size of the hot press sintering samples decreases obviously and the surface compactness is improved as the pressure is increased. The films are quite anisotropic with magnetic easy axis perpendicular to the film plane. The largest remanence ratio achieved is 0.75 under the highest pressure of 4 MPa.

A surface-modified carbon nanotubes (CNTs), which shows an excellent electron field emission property was obtained in the present work. Conventional screen-printing technology was applied to prepare the CNT films. After hydrogen plasma surface treating process, the morphology of nanotubes surface were totally changed. Those modified CNTs exhibited low turn-on electron field of 0.98 V/μm, current density of 1 mA/cm² at a field of 6.53 V/μm and a very high emission site density of about 10⁶/cm², which is three orders of magnitude higher than that of untreated CNT films. Diode-type prototype devices were obtained which proved the modified CNTs is suitable for field emission displays.

This paper presents the chip scale packaging of pressure sensors using glass frit technology. The silicon wafer of pressure sensors is sandwiched between the anodically bonded bottom glass wafer with an etched hole, and the glass-frit bonded top glass wafer with the solder bumps. The screen-printed glass frit technique can overcome the planarization problem associated with metallization of the piezoresistors on the silicon wafers. The diffused piezoresistive Wheastone bridge is fabricated on the diaphragm enabling to measure the pressure range between 0 to 0.4 bars. At the same time the tensometric piezoresistive bridge is integrated to monitor the residual stress induced by this packaging technique.

Flexible Bi${}_{0.4}$Sb${}_{1.6}$Te₃ (BST)/methyl cellulose (MC) thermoelectric composite films were prepared by a two-step process: BST powders were successfully prepared via a ball milling method, and then BST/MC composite films with different volume fractions of BST were screen printed on flexible mixed cellulose esters membrane. As the contents of BST powders increased, the electrical conductivity was significantly improved, while the Seebeck coefficient was nearly unchanged, and a room temperature power factor (PF) of 2.32 $\mu$W m${}^{-1}$ K${}^{-2}$ was achieved when the volume fraction of BST was 80%. After the cold-pressing treatment, both the electrical conductivity and Seebeck coefficient were improved, and a highest PF of 10.07 $\mu$W m${}^{-1}$ K${}^{-2}$ was obtained at room temperature for the film with 80 vol.% BST, which was $\sim$4.3 times higher than that of the pristine sample (2.32 $\mu$W m${}^{-1}$ K${}^{-2}$ at room temperature). The tendency of thermoelectric performance varying with BST proportion was explained by the percolation threshold theory. This work shows the great potential of screen-printing technology in flexible and wearable electronics.

Data fusion is a frequent statistic method that can be applied to sensor development field, such as multisensors and sensors array. In this study, the analytic data fusion methods consist of the arithmetic mean and weighted data fusion used to estimate the measured pH data of flexible pH sensors array. The main part of the flexible 2 × 4 pH sensors array was fabricated by screen printing, and the ruthenium dioxide (RuO₂) thin film on each sensor of the sensor array was deposited by radio frequency (RF)-sputtering method. In accordance with experiment results, the pH values estimated by weighted data fusion method are accurate than by arithmetic mean method. Furthermore, that the flexible sensors array is actually used to detect the pH value of different commercial drinks is also investigated.