A closed-cell photothermal detector for aqueous analytes has been evaluated at 254 and 678 nm. We used a detector with a water meniscus as a pressure sensor, whose periodic deflection was measured using a low-finesse optical fiber Fabry-Perot interferometer. Performance was compared with a commercial diode array spectrometer and found to be similar for absorption measurements in nonturbid sampl...

We have implemented a photothermal absorbance strategy where optical absorbance induced solvent temperature increases are monitored using electrolyte conductivity. This method produces a response that is independent of pathlength, assuming thermal conductivity issues can be neglected, and has been suggested to be an interesting approach for use in capillary-based systems, but sensitivity was fo...

Photothermal Materials In article number 2007761, Shiqi Wang, Hélder Santos, and co-workers introduce a polyoxometalate {Mo154}-incorporating, dual-crosslinked dynamic hydrogel (Mo154Gel) formed by Schiff base electrostatic interactions. Mo154Gel shows exceptional photothermal conversion, pH- near-infrared-laser-triggered drug release. This work paves the way for development of novel {Mo154}-ba...

introduction application of near-infrared absorbing nanostructures can induce hyperthermia, in addition to providing more efficient  photothermal effects. gold-gold sulfide (ggs) is considered as one of these nanostructures. this study was performed on a tissue-equivalent optical-thermal phantom to determine the temperature profile in the presence and absence of ggs and millisecond pulses of a ...

background and objective: multi-walled carbon nano tubes (mwcnts) as an important element of nanosciences have a remarkable absorption in the region of nir window (650-900 nm) which can overcome the limitations of deep treatment in photothermal therapy. to disperse mwcnts in water, it is proposed to attach carboxylated functional group (-cooh) to mwcnts in order to increase dispersivity in wate...

To minimize thermal injury, the current study evaluated the real-time temperature monitoring with a proportional-integrative-derivative (PID) controller during 980-nm photothermal treatment with a radially-diffusing applicator. Both simulations and experiments demonstrated comparable thermal behaviors in temperature distribution and the degree of irreversible tissue denaturation. The PID-contro...

Photothermal interferometry has been demonstrated for detection of vapors with extremely high sensitivity (parts-per-trillion). Our present research uses a photothermal detection scheme that incorporates tunable sources and a modified Jamin interferometric design to provide high selectivity and sensitivity for organo-phosphate vapor detection. Phase shifts on microradian levels have been detect...

This paper briefs the photothermal reliability studies we conducted on different encapsulation materials for some U.S. PV companies that are subcontractors of the Photovoltaic Manufacturing Technology (PVMaT) program. The results indicate that the photothermal stability of two foreign ethylene vinyl acetate (EVA) films is dependent on the formulation, curing method and condition, as well as acc...

The recent development of new migration methods of micro-particles in liquids using various external fields is reviewed. The combination of a laser scattering force and a photothermal effect produced photothermal-conversion laser-photophoresis. A dielectric field generated in a planer or a capillary quadrupole electrode realized dielectrophoresis. Using a micrometer-scaled magnetic field gradie...