5 research outputs found
Supplementary Material, DS_10.1177_0022034518775036 – NLRP6 Induces Pyroptosis by Activation of Caspase-1 in Gingival Fibroblasts
<p>Supplementary Material, DS_10.1177_0022034518775036 for NLRP6 Induces Pyroptosis by Activation of Caspase-1 in Gingival Fibroblasts by W. Liu, J. Liu, W. Wang, Y. Wang and X. Ouyang in Journal of Dental Research</p
Impact of Nitrogen Doping on Electrical Conduction in Anatase TiO<sub>2</sub> Thin Films
Nitrogen doping-induced changes in the electrical conduction
of
anatase TiO<sub>1‑<i>x</i></sub>N<sub><i>x</i></sub> (<i>x</i> ≤ 0.12) thin films were investigated
by combining electrical measurement with structural characterization.
The Hall effect data indicate that when the doping level reaches 4
at.%, the O substitution with N results in a p-type conduction, in
spite of the self-compensation effect, and the Hall mobility of holes
is more than 20 cm<sup>2</sup>/(V s). On the basis of the experimental
results from X-ray diffraction, X-ray photoemission spectroscopy,
and temperature-resistance relationship, a mechanism involving hopping
conduction and band conduction is proposed to interpret the transport
behavior of carriers. In addition, the origin of the p-type based
on the structural character of the film will also be discussed
Impact of Nitrogen Doping on Electrical Conduction in Anatase TiO<sub>2</sub> Thin Films
Nitrogen doping-induced changes in the electrical conduction
of
anatase TiO<sub>1‑<i>x</i></sub>N<sub><i>x</i></sub> (<i>x</i> ≤ 0.12) thin films were investigated
by combining electrical measurement with structural characterization.
The Hall effect data indicate that when the doping level reaches 4
at.%, the O substitution with N results in a p-type conduction, in
spite of the self-compensation effect, and the Hall mobility of holes
is more than 20 cm<sup>2</sup>/(V s). On the basis of the experimental
results from X-ray diffraction, X-ray photoemission spectroscopy,
and temperature-resistance relationship, a mechanism involving hopping
conduction and band conduction is proposed to interpret the transport
behavior of carriers. In addition, the origin of the p-type based
on the structural character of the film will also be discussed
Direct Measurements of Magnetic Polarons in Cd<sub>1–<i>x</i></sub>Mn<sub><i>x</i></sub>Se Nanocrystals from Resonant Photoluminescence
In
semiconductors, quantum confinement can greatly enhance the
interaction between band carriers (electrons and holes) and dopant
atoms. One manifestation of this enhancement is the increased stability
of <i>exciton magnetic polarons</i> in magnetically doped
nanostructures. In the limit of very strong 0D confinement that is
realized in colloidal semiconductor nanocrystals, a single exciton
can exert an effective exchange field <i>B</i><sub>ex</sub> on the embedded magnetic dopants that exceeds several tesla. Here
we use the very sensitive method of resonant photoluminescence (PL)
to directly measure the presence and properties of exciton magnetic
polarons in colloidal Cd<sub>1–<i>x</i></sub>Mn<sub><i>x</i></sub>Se nanocrystals. Despite small Mn<sup>2+</sup> concentrations (<i>x</i> = 0.4–1.6%), large polaron
binding energies up to ∼26 meV are observed at low temperatures
via the substantial Stokes shift between the pump laser and the resonant
PL maximum, indicating nearly complete alignment of all Mn<sup>2+</sup> spins by <i>B</i><sub>ex</sub>. Temperature and magnetic
field-dependent studies reveal that <i>B</i><sub>ex</sub> ≈ 10 T in these nanocrystals, in good agreement with theoretical
estimates. Further, the emission line widths provide direct insight
into the statistical fluctuations of the Mn<sup>2+</sup> spins. These
resonant PL studies provide detailed insight into collective magnetic
phenomena, especially in lightly doped nanocrystals where conventional
techniques such as nonresonant PL or time-resolved PL provide ambiguous
results
Efficient Capture and High Activity Release of Circulating Tumor Cells by Using TiO<sub>2</sub> Nanorod Arrays Coated with Soluble MnO<sub>2</sub> Nanoparticles
Effective
capture and release of circulating tumor cells (CTCs) with high viability
is still a challenge in medical research. We design a novel approach
with efficient yield and high cell activity for the capture and release
of CTCs. Our platform is based on TiO<sub>2</sub> nanorod arrays coated
with transparent MnO<sub>2</sub> nanoparticles. We use hydrothermal
synthesis to prepare TiO<sub>2</sub> nanorod arrays, the MnO<sub>2</sub> nanoparticles are fabricated through in situ self-assembly on the
substrate to form a monolayer and etched by oxalic acid with low concentration
at room temperature. Up to 92.9% of target cells are isolated from
the samples using our capture system and the captured cells can be
released from the platform, the saturated release efficiency is 89.9%.
Employing lower than 2 × 10<sup>–3</sup> M concentration
of oxalic acid to dissolve MnO<sub>2</sub>, the viability of MCF-7
cancer cells exceed 90%. Such a combination of the two-dimensional
and three-dimensional platforms provides a new approach isolate CTCs
from patient blood samples