High-quality indium–tin–oxide (ITO) thin films (200–850 nm) have been grown by pulsed laser deposition (PLD) on glass substrates without a postdeposition annealing treatment. The structural, electrical, and optical properties of these investigated as function target composition, substrate temperature, background gas pressure, film thickness. Films were deposited from various compositions ranging 0 to 15 wt % SnO2 content. optimum composition for high conductivity was 5 SnO2+95 In2O3. at...

Aluminum-doped zinc oxide (AZO) thin films (∼3000 Å) with low electrical resistivity and high optical transparency have been grown by pulsed-laser deposition on glass substrates without a postdeposition anneal. Films were deposited at substrate temperatures ranging from room temperature to 400 °C in O2 partial pressures 0.1 50 mTorr. For 3000-Å-thick AZO an oxygen pressure of 5 mTorr, the was 8.7×10−4 Ω cm average transmittance 86% visible range (400–700 nm). 200 mTorr oxygen, 3.8×10−4 91%....

Three-dimensional (3D) bioprinting, as a freeform biomedical manufacturing approach, has been increasingly adopted for the fabrication of constructs analogous to living tissues. Generally, materials printed during 3D bioprinting are referred bioinks, which may include cells, extracellular matrix materials, cell media, and/or other additives. For be an enabling tissue engineering bioink printability is critical requirement must able and reproduce complex micro-architecture native tissues in...

High-quality indium tin oxide (ITO) thin films (150–200 nm) were grown on glass substrates by pulsed laser deposition (PLD) without postdeposition annealing. The electrical, optical, and structural properties of these investigated as a function substrate temperature, oxygen pressure, film thickness. PLD provides very uniform ITO with high transparency (⩾85% in 400–700 nm spectrum) low electrical resistivity (2–4×10−4 Ω cm). Hall mobility carrier density for 170-nm-thick deposited at 300 °C...

Thermoelectric power, electrical resistivity and magnetization experiments, performed in the paramagnetic phase of La_{2/3}Ca_{1/3}MnO_3, provide evidence for polaron-dominated conduction CMR materials. At high temperatures, a large, nearly field-independent difference between activation energies (rho) thermopower (S), characteristic Holstein Polarons, is observed, ln(rho) ceases to scale with magnetization. On approaching T_c, both become field-dependent, indicating that polarons are...

The survival, proliferation, and differentiation of freshly isolated cultured cells were studied after absorbing film-assisted laser-induced forward transfer. Rat Schwann astroglial pig lens epithelial used for transfer the 2 weeks laserpulsed All three cell types survived, proliferated, differentiated under culture conditions regained their original phenotype a few days Time resolution studies have shown that time required to accelerate jets droplets containing was less than 1 µs estimated...

Transparent conducting indium tin oxide (ITO) thin films (40–870 nm) were grown by pulsed laser deposition on amorphous substrates and the structural, electrical, optical properties of these investigated. Films deposited using a KrF excimer (248 nm, 30 ns FWHM) at fluence 2 J/cm2, substrate temperature 300 °C 10 mTorr oxygen pressure. For ITO (30–400 nm thickness) in oxygen, resistivity 1.8–2.5×10−4 Ω cm was observed average transmission visible range (400–700 about 85%–90%. The Hall...

A technique by which to print patterns and multilayers of scaffolding living cells could be used in tissue engineering fabricate constructs with cells, materials, chemical diversity at the micron scale. We describe here studies using a laser forward transfer technology single-layer pluripotent murine embryonal carcinoma cells. This report focuses on verifying cell viability functionality as well ability differentiate after transfer. find that when are printed onto model such layer hydrogel,...

A strong correlation is observed between the structure and microwave dielectric properties of epitaxial Ba0.5Sr0.5TiO3 (BST) thin films deposited onto (001) MgO by pulsed laser deposition. Films were at 750 °C in an oxygen pressure that was varied from 3 to 1000 mTorr. The tetragonal distortion (ratio in-plane surface normal lattice parameters, D=a/c) depends on deposition pressure. D 0.996 mTorr 1.003 800 At frequencies (1–20 GHz), BST with low have higher constants (ε∼500), lower loss (tan...

Oriented, single phase thin films (∼5000 Å thick) of Ba0.5Sr0.5TiO3 (BST) have been deposited onto (100) MgO and LaAlO3 (LAO) substrates using pulsed laser deposition. The capacitance dielectric Q (1/tan δ) as-deposited annealed measured from 1 to 20 GHz as a function electric field (0–80 kV/cm) at room temperature interdigitated Ag electrodes on top the film. For MgO, it is observed that, after postdeposition anneal (1000–1200 °C), constant decreases increases. LAO, (⩽ 1000 °C) resulted in...

Transparent conducting indium tin oxide (ITO) thin films were grown by pulsed laser deposition (PLD) on flexible polyethylene terephthalate (PET) substrates. The structural, electrical, and optical properties of these investigated as a function substrate temperature background gas pressure. ITO (200 nm thick), deposited PLD PET at 25 °C 45 mTorr oxygen, exhibit high transparency (∼87%) in the visible (400–700 nm) with low electrical resistivity 7×10−4 Ω cm. used anode contact organic...

The effect of a postdeposition anneal on the structure and dielectric properties epitaxial BaxSr1−xTiO3 (BST) thin films (x=0.35–0.65) have been measured. were grown by pulsed laser deposition LaAlO3 (001) substrates. single phase oriented with lattice parameter larger than bulk. x=0.35 film exhibited broad temperature dependence peak at 168 K, which is 36 K below observed in bulk BST (x=0.35). Annealing for 8 h flowing oxygen 900 °C caused to decrease become more like also resulted an...

In a direct-write approach, micrometer-scale structures are built directly without the use of masks, allowing rapid prototyping. Direct-write approaches enabling faster, cheaper manufacture electronic components and also used for tissue engineering array-based biosensors. his Perspective, Chrisey provides short overview current research in area technologies, focusing on materials science aspects.