scholarly journals High-performance position-sensitive detector based on graphene–silicon heterojunction

Optica ◽  
2018 ◽  
Vol 5 (1) ◽  
pp. 27 ◽  
Author(s):  
Wenhui Wang ◽  
Zhenzhong Yan ◽  
Jinfeng Zhang ◽  
Junpeng Lu ◽  
Hua Qin ◽  
...  
Keyword(s):  
High Performance ◽  
Position Sensitive Detector ◽  
Sensitive Detector ◽  
Position Sensitive

Laser-induced photoresistance effect in Si-based vertical standing MoS2 nanoplate heterojunctions for self-powered high performance broadband photodetection

2019 ◽  
Vol 7 (34) ◽  
pp. 10642-10651 ◽  
Author(s):  
Shuang Qiao ◽  
Jihong Liu ◽  
Guangsheng Fu ◽  
Shufang Wang ◽  
Kailiang Ren ◽  
...  
Keyword(s):  
High Performance ◽  
Position Sensitive Detector ◽  
Sensitive Detector ◽  
Position Sensitive ◽  
Self Powered

In this manuscript, the vertically standing nanoplate MoS2/Si heterojunction is prepared and successfully exploited as a photovoltage, photocurrent and photoresistance-based multifunctional self-powered position sensitive detector (PSD).

A Proposal of High-Performance Method for Distance Measuring Sensor United with PSD

2010 ◽  
Vol 36 ◽  
pp. 365-369 ◽  
Author(s):  
Shota Nakashima ◽  
Takafumi Nakamuta ◽  
Yuhki Kitazono ◽  
Shi Yuan Yang ◽  
Serikawa Seiichi
Keyword(s):  
High Performance ◽  
Distance Measurement ◽  
Experimental Results ◽  
Position Sensitive Detector ◽  
Sensor System ◽  
Sensitive Detector ◽  
Psd Sensor ◽  
Position Sensitive ◽  
Measuring Sensor ◽  
Better Than

In this study, we propose a sensor system to improve the performance of distance measurement using multiple paralleled position sensitive detector (PSD) sensors. The PSD sensor uses a light emitted diode (LED) to illuminate an object and measures the distance to the object by the position on the PSD of the gathered light from the object. The proposed sensor system uses two symmetrically paralleled PSD sensors to increase the measuring distance extent and accuracy. Experimental results showed that the proposed PSD sensor system has an enlarged measuring extent, and has a measuring accuracy better than or equal to the conventional one.

High-performance position-sensitive detector based on the lateral photovoltaic effect in MoSe2/p-Si junctions

2019 ◽  
Vol 58 (19) ◽  
pp. 5200 ◽  
Author(s):  
Xiaofeng Zhao ◽  
Lingrui Zhang ◽  
Qiying Gai ◽  
Chang Hu ◽  
Xianjie Wang
Keyword(s):  
High Performance ◽  
Photovoltaic Effect ◽  
Position Sensitive Detector ◽  
Sensitive Detector ◽  
Position Sensitive

Hydrostatic Fiber Optic Liquid Level Sensor with position sensitive detector

Metrologiya ◽  
2020 ◽  
pp. 38-51
Author(s):  
V. N. Astapov ◽  
I. N. Kozlova
Keyword(s):  
Fiber Optic ◽  
Effective Area ◽  
Raw Material ◽  
Position Sensitive Detector ◽  
Fiber Optic Sensor ◽  
Liquid Level ◽  
Problem Solution ◽  
Sensitive Detector ◽  
Position Sensitive ◽  
Triangulation Sensor

This article presents the rationale and methodology for developing an intrinsically safe device, namely, a hydrostatic fiber optic sensor with a position-sensitive detector for monitoring the level of oil products in large-capacity tanks at oil depots and during pumping in a raw material warehouses. This device suitable for continuous monitoring of the liquid level, based on the measurement of a hydrostatic column of liquid with automatic offset of changes in the density of the liquid. Offset is carried out by means of a displacer (a fully submerged float), inside which a housing with a position-sensitive detector (PSD) is integrated. Theoretical validation of the bellows suspension usage for a displacer is given. During filling a container with a liquid whose level is measured, liquid bellows, the movement of which is recorded by an optical triangulation sensor using the reflected infrared ray incident on the bottom of the bellows. The principle of the triangulation sensor operation is based on the geometric properties of the triangles. The pulses of infrared radiation come through a fiber optic cable. In order to measure the movement of the surface (the bottom of the bellows) by measuring the movement of the reflected beam, a position-sensitive detector is used, which is located in a remote controller. In this device for the intrinsic safety problem solution, optical inputs of a fiber optic flat cable are located in the active zone of the sensor, which is connected to the optical inputs of a position-sensitive detector, operated on the principles of photoelectric effect. The light spot moving along the sensitive zone and converted by the detector into a one-dimensional signal proportional to the distance to the object. hydrostatically applies pressure over the entire effective area of the measuring

Control of the phase composition of advanced calcium phosphates using an x-ray diffractometer with a curved position-sensitive detector

2020 ◽  
Vol 86 (6) ◽  
pp. 29-35
Author(s):  
V. P. Sirotinkin ◽  
O. V. Baranov ◽  
A. Yu. Fedotov ◽  
S. M. Barinov
Keyword(s):  
Phase Composition ◽  
Calcium Phosphates ◽  
Position Sensitive Detector ◽  
Sensitive Detector ◽  
X Ray Diffraction ◽  
X Ray ◽  
Impurity Phases ◽  
Position Sensitive ◽  
Diffraction Peaks ◽  
Diffraction Patterns

The results of studying the phase composition of advanced calcium phosphates Ca10(PO4)6(OH)2, β-Ca3(PO4)2, α-Ca3(PO4)2, CaHPO4 · 2H2O, Ca8(HPO4)2(PO4)4 · 5H2O using an x-ray diffractometer with a curved position-sensitive detector are presented. Optimal experimental conditions (angular positions of the x-ray tube and detector, size of the slits, exposure time) were determined with allowance for possible formation of the impurity phases during synthesis. The construction features of diffractometers with a position-sensitive detector affecting the profile characteristics of x-ray diffraction peaks are considered. The composition for calibration of the diffractometer (a mixture of sodium acetate and yttrium oxide) was determined. Theoretical x-ray diffraction patterns for corresponding calcium phosphates are constructed on the basis of the literature data. These x-ray diffraction patterns were used to determine the phase composition of the advanced calcium phosphates. The features of advanced calcium phosphates, which should be taken into account during the phase analysis, are indicated. The powder of high-temperature form of tricalcium phosphate strongly adsorbs water from the environment. A strong texture is observed on the x-ray diffraction spectra of dicalcium phosphate dihydrate. A rather specific x-ray diffraction pattern of octacalcium phosphate pentahydrate revealed the only one strong peak at small angles. In all cases, significant deviations are observed for the recorded angular positions and relative intensity of the diffraction peaks. The results of the study of experimentally obtained mixtures of calcium phosphate are presented. It is shown that the graphic comparison of experimental x-ray diffraction spectra and pre-recorded spectra of the reference calcium phosphates and possible impurity phases is the most effective method. In this case, there is no need for calibration. When using this method, the total time for analysis of one sample is no more than 10 min.

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