Organic semiconductors in electronic devices usually have poor thermal conduction which could trap considerable amount of heat, inducing operational instability and reducing device lifetime, limiting commercialization potential. Despite the technological essence to understand enhance heat-dissipation, related studies on organic are very limited. In this study, authors show that scanning phototh...

In the current study, we evaluate the equivalent stiffness of peritubular reinforcement effect (PRE) of porous dentine optimized by the thickness of peritubular dentine (PTD). Few studies to date have evaluated or quantitated the effect of PRE on composite dentine. The miscrostructure of porous dentine is captured by scanning electron microscope images, and then finite element modeling is used ...

Although immersion and oral vaccination are the most practical methods for fish farmers, their applications are very limited due to low immune stimulation effect. We used the protein transduction domain (PTD) of transactivating transcriptional factor (TAT) derived from HIV TAT protein to increase the delivery efficiency of aquatic protein vaccines. Vibrio parahaemolyticus outer membrane protein...

Most high-performance organic solar cells involve bulk-heterojunctions in order to increase the active donor-acceptor interface area. The power conversion efficiency depends critically on the nano-morphology of the blend and the interface. Spectroscopy of the sub-bandgap region, i.e., below the bulk absorption of the individual components, provides unique opportunities to study interface-relate...

Here we show that the charge transfer (CT) absorption signal in bulk-heterojunction solar cell blends, measured by photothermal deflection spectroscopy, is directly proportional to the density of molecular donor:acceptor interfaces. Since the optical transitions from the ground state to the interfacial CT state are weakly allowed at photon energies below the optical gap of both the donor and ac...

The infrared-active (IR) vibrational mode of ethanol (EtOH) associated with the asymmetrical stretching of the C-C-O bond in pico-liter volumes of EtOH-water binary mixtures is calorimetrically measured using photothermal microfluidic cantilever deflection spectroscopy (PMCDS). IR absorption by the confined liquid results in wavelength dependent cantilever deflections, thus providing a compleme...

(1) Departament d'Enginyeria Electrònica. Jordi Girona 1-3, Mòdul C4. Universitat Politècnica de Catalunya (Barcelona, Spain). (2) Departament d'Enginyeria Electrònica. Universitat Rovira i Virgili (Tarragona, Spain). (3) Departament de Física Aplicada i Òptica. Universitat de Barcelona (Barcelona, Spain) Abstract Hydrogenated microcrystalline silicon films obtained at low temperature (150oC-28...

We describe studies of the interaction of ≅400ns duration, multiline (2.6-3) μm HF laser with enamel tissue. The etch rate experiment showed an ablation threshold fluence of 47 Jcm but using the dispersion theory for optical coefficients of n and k for enamel at dominant laser lines, this value reduced to ≅25 Jcm making it more comparable with other investigations. The main mechanism of enamel ...