scholarly journals Formation of MgO:LiNbO3 Domain-Inverted Gratings by Voltage Application under UV Light Irradiation at Room Temperature

2008 ◽  
Vol 2008 ◽  
pp. 1-5 ◽  
Author(s):  
Masatoshi Fujimura ◽  
Toshiaki Suhara
Keyword(s):  
Nonlinear Optic ◽  
Room Temperature ◽  
Uv Light ◽  
Lateral Expansion ◽  
Cladding Layer ◽  
Uv Light Irradiation ◽  
Voltage Application ◽  
Formation Method ◽  
Domain Inversion ◽  
Photolithography Process

MgO:LiNbO3 is an attractive nonlinear-optic crystal for quasiphasematched (QPM) nonlinear-optic devices. This paper reports a new formation method of domain-inverted gratings for QPM in MgO:LiNbO3. Domain inversion of MgO:LiNbO3 by voltage application under UV light was characterized, and reduction of the voltage required for inversion was demonstrated. Results of voltage application under periodic UV light suggested that suppression of excess lateral expansion of the domain inverted regions on −Z surface was crucial for domain-inverted grating formation. Voltage application to a crystal with a photoconductive cladding layer under periodic UV light was proposed. The cladding layer suppressed the expansion, and the domain-inverted gratings with period of 18 μm and area of 25×5 mm2 were obtained. The formation method does not require the photolithography process and allows the formation by voltage application at room temperature, and therefore, is quite simple and productive.

UV-Light Irradiation Effect on Room-Temperature-Processed ZnO/p-Si

2007 ◽  
Vol 51 (12) ◽  
pp. 115 ◽  
Author(s):  
Yu-Jin KANG ◽  
Chea-Ryong CHO ◽  
Se-Young JEONG ◽  
Hong-Seung KIM ◽  
Hyung-Soo AHN
Keyword(s):  
Room Temperature ◽  
Uv Light ◽  
Light Irradiation ◽  
Irradiation Effect ◽  
Uv Light Irradiation

In situ growth and optical gas adsorption performance of Zn(ii) metal–organic framework membranes at room temperature

The Analyst ◽  
2019 ◽  
Vol 144 (16) ◽  
pp. 4887-4896 ◽  
Author(s):  
Mariyemu Tuergong ◽  
Patima Nizamidin ◽  
Abliz Yimit ◽  
Rena Simayi
Keyword(s):  
Room Temperature ◽  
Gas Adsorption ◽  
Uv Light ◽  
Metal Organic Framework ◽  
Adsorption Behaviors ◽  
Uv Light Irradiation ◽  
Unit Surface ◽  
Metal Organic ◽  
First Time

The optical gas adsorption behaviors of [Zn2(bdc)2(dpNDI)]n membranes were studied for the first time. Under UV light irradiation, they exhibited a greater adsorption response to xylene gas with adsorption capacity of 6.46 μg cm−2 per unit surface.

scholarly journals Semiconductor-type SnO2-based NO2 sensors operated at room temperature under UV-light irradiation

2017 ◽  
Vol 253 ◽  
pp. 630-640 ◽  
Author(s):  
Takeo Hyodo ◽  
Kaoru Urata ◽  
Kai Kamada ◽  
Taro Ueda ◽  
Yasuhiro Shimizu
Keyword(s):  
Room Temperature ◽  
Uv Light ◽  
Light Irradiation ◽  
Uv Light Irradiation ◽  
Semiconductor Type

One-pot room-temperature conversion of cyclohexane to adipic acid by ozone and UV light

Science ◽  
2014 ◽  
Vol 346 (6216) ◽  
pp. 1495-1498 ◽  
Author(s):  
Kuo Chu Hwang ◽  
Arunachalam Sagadevan
Keyword(s):  
Adipic Acid ◽  
Room Temperature ◽  
Uv Light ◽  
Acid Synthesis ◽  
Acid Oxidation ◽  
One Pot ◽  
Uv Light Irradiation ◽  
Free Process ◽  
Solid Precipitate ◽  
Nitric Acid Oxidation

Nitric acid oxidation of cyclohexane accounts for ~95% of the worldwide adipic acid production and is also responsible for ~5 to 8% of the annual worldwide anthropogenic emission of the ozone-depleting greenhouse gas nitrous oxide (N2O). Here we report a N2O-free process for adipic acid synthesis. Treatment of neat cyclohexane, cyclohexanol, or cyclohexanone with ozone at room temperature and 1 atmosphere of pressure affords adipic acid as a solid precipitate. Addition of acidic water or exposure to ultraviolet (UV) light irradiation (or a combination of both) dramatically enhances the oxidative conversion of cyclohexane to adipic acid.

scholarly journals Photocatalytic Performance of TiO2 Nanofibers as a Function of Fiber Diameter Using TiCl2 as a Precursor

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Ali Akbar Ashkarran ◽  
Sima Eshghi ◽  
Mohammad Reza Nourani
Keyword(s):  
Room Temperature ◽  
Photocatalytic Performance ◽  
Fiber Diameter ◽  
Uv Light ◽  
Separation Distance ◽  
X Ray Diffraction ◽  
Electrospinning Technique ◽  
Tio2 Nanofibers ◽  
X Ray ◽  
Uv Light Irradiation

We focus on the production of TiO2 nanofibers with controllable diameters using a facile electrospinning technique at room temperature. The resulting nanofibers were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet-visible spectroscopy (UV-Vis). The most important electrospinning parameters including potential difference (kV), flow rate (mL/h), and the separation distance between electrodes (cm) were found to have significant influence on the diameter of the produced nanofibers. The photocatalytic performance of TiO2 nanofibers was successfully demonstrated for decolorization of Rhodamine B (Rh.B) under UV light irradiation. It was found that fiber diameter has a crucial influence on the photocatalytic performance of TiO2 nanofibers.

Enhanced NO 2 gas sensing performance of bare and Pd-loaded SnO 2 thick film sensors under UV-light irradiation at room temperature

2016 ◽  
Vol 223 ◽  
pp. 429-439 ◽  
Author(s):  
Fahimeh Hooriabad Saboor ◽  
Taro Ueda ◽  
Kai Kamada ◽  
Takeo Hyodo ◽  
Yadollah Mortazavi ◽  
...  
Keyword(s):  
Thick Film ◽  
Room Temperature ◽  
Gas Sensing ◽  
Uv Light ◽  
Light Irradiation ◽  
Uv Light Irradiation ◽  
Sensing Performance

Low-Temperature Processing and Optical Hydrogen Gas Sensing Property of Pd-Loaded Titania Coating onto Flexible Plastic Substrate

2013 ◽  
Vol 566 ◽  
pp. 249-252 ◽  
Author(s):  
Junichi Hamagami ◽  
Shohei Onimaru ◽  
Ryo Araki ◽  
G. Kawamura ◽  
Atsunori Matsuda
Keyword(s):  
Low Temperature ◽  
Room Temperature ◽  
Uv Light ◽  
Sol Gel ◽  
Hydrogen Gas ◽  
Hot Water ◽  
Light Irradiation ◽  
Plastic Substrate ◽  
Uv Light Irradiation ◽  
Titania Coating

Transparent titania coating was formed onto a flexible polycarbonate plastic substrate by low-temperature fabrication process below 100 °C consisting of a sol-gel technique and a hot water treatment method. The titania coating with high transparency showed a good photocatalytic activity under ultraviolet (UV) light irradiation. Palladium metal acts as a catalyst for dissociative adsorption of hydrogen gas at room temperature under an atmospheric pressure. The palladium catalyst was deposited on the photocatalytic titania coating by a photodeposition process at room temperature under UV-light irradiation. The flexible polycarbonate plastic sheet with semitransparent palladium-deposited titania coating works as an optically readable hydrogen gas sensor which can operate at room temperature.

Room temperature gas sensing under UV light irradiation for Ti3C2Tx MXene derived lamellar TiO2-C/g-C3N4 composites

2021 ◽  
Vol 535 ◽  
pp. 147666
Author(s):  
Ming Hou ◽  
Jiyun Gao ◽  
Li Yang ◽  
Shenghui Guo ◽  
Tu Hu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Uv Light ◽  
Light Irradiation ◽  
Uv Light Irradiation

scholarly journals NO gas sensing kinetics at room temperature under UV light irradiation of In2O3 nanostructures

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Nguyen Duc Chinh ◽  
Nguyen Duc Quang ◽  
Hyundong Lee ◽  
Truong Thi Hien ◽  
Nguyen Minh Hieu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Uv Light ◽  
Light Irradiation ◽  
Uv Light Irradiation ◽  
In2o3 Nanostructures
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