Synthesis and photoelectrochemical behavior of CdS quantum dots-sensitized indium–tin–oxide mesoporous film

Haining Chen,Liqun Zhu,Weiping Li,Huicong Liu 한국물리학회 2012 Current Applied Physics Vol.12 No.1

In this paper, we reported an investigation on a new photoelectrode of quantum dots-sensitized solar cell (QDSC) combining indiumetineoxide (ITO) mesoporous film and CdS quantum dots (QDs). The ITO mesoporous film was prepared by doctor-blade technique and CdS QDs attached on ITO mesoporous film were synthesized by successive ionic layer adsorption and reaction method. X-ray diffraction, field emission scanning electron microscopy, transmission electron microscope, X-ray spectroscopy and UV evis spectroscopy were used to characterize the samples. The results indicated that the ITO mesoporous film was uniform, crack-free and highly porous. And absorbance in visible region was enhanced after the deposition of CdS QDs on ITO mesoporous film. The photoelectrochemical property of the CdS QDssensitized ITO mesoporous film photoelectrode was investigated by forming a photoelectrochemical cell. Photocurrentevoltage measurement showed that the photoelectrode was efficient in the cell as working electrode.

EFFECT OF THE CHROMOPHORES STRUCTURES ON THE PERFORMANCE OF SOLID-STATE DYE SENSITIZED SOLAR CELLS

HAINING TIAN,Eva M. Barea,ANDREA SOTO,BO XU,LICHENG SUN,ANDERS HAGFELDT,FRANCISCO FABREGAT-SANTIAGO,IVAN MORA-SERO,강용수,Juan Bisquert 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2014 NANO Vol.9 No.5

The efect of metal-free chromophores on dye-sensitized solar cell performance is investigated. Solid state dye-sensitized solar cells (ssDSCs) using diferent molecular sensitizers based on tri-phenylamine (TPA) with thiophene linkers and diferent alkyl chain in the donor unit have beencharacterized using impedance spectroscopy (IS). We show that diferent molecular structuresplay a fundamental role on solar cell performance, by the efect produced on TiO 2 conductionband position and in the recombination rate. Dye structure and its electronic properties are themain factors that control the recombination, the capacitance and the e±ciency of the cells. Aclear trend between the performance of the cell and the optimization level of the blocking efect of the dye structure has been identi¯ed in the solid state solar cells with Spiro-OMeTAD holeconductor.

Rapid Process Modeling of the Aerosol Jet Printing Based on Gaussian Process Regression with Latin Hypercube Sampling

Haining Zhang,Seung Ki Moon,Teck Hui Ngo,Junjie Tou,Mohamed Ashrof Bin Mohamed Yusoff 한국정밀공학회 2020 International Journal of Precision Engineering and Vol.21 No.1

Aerosol jet printing (AJP) technology is a relatively new 3D printing technology for producing customized microelectronic components due to its high design flexibility and fine feature deposition. However, complex interactions between machine, process parameters and materials will influence line morphology and remain a challenge on modeling effectively. And the system drift which induced by many changing and uncertain factors will affect the printing process significantly. Hence, it is necessary to develop a small data set based machine learning approach to model relationship between the process parameters and the line morphology. In this paper, we propose a rapid process modeling method for AJP process and consider sheath gas flow rate, carrier gas flow rate, stage speed as AJP process parameters, and line width and line roughness as the line morphology. Latin hypercube sampling is adopted to generate experimental points. And, Gaussian process regression (GPR) is used for modeling the AJP process because GPR has the capability of providing the prediction uncertainty in terms of variance. The experimental result shows that the proposed GPR model has competitive modeling accuracy comparing to the other regression models.

Formation and failure characteristics of a landslide induced by excavation in western Henan, China

Haining Liu,Suzhen Duan,Han Dong Liu,Weiguo Wang,Yujie Jia 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.7

Engineering construction in mountainous areas is a key factor inducing slope failure, whichposes severe threats to life and property safety during construction and operation. Thus, clearunderstanding of slope structure and potential failure mechanisms is of great importance forslope reinforcement. The Shangge landslide, located in a mountainous area of WesternHenan, China, was triggered by excavation along a toll station. The slope was still unstableafter a row of anti-sliding piles were constructed. To clarify the deformation characteristics andfailure mechanism of this landslide and provide reinforcement guidance for slopes with similargeological conditions, a combined method of field investigation, displacement monitoring,and numerical simulation was employed. The results indicate that the natural slope comprisesa dual structure of soil and rock, and that the soil, with poor permeability and high watermoisture, was prone to form a potential sliding surface. Secondly, slope excavation was thedirect triggering factor. Lastly, but most importantly, the preliminary investigation work failed toaccurately expose the potential position of the sliding surface, and the existing anti-slide pilesfailed to cross the potential sliding surface, which made them unable to effectively improveslope stability. The numerical simulation verified that the recommended piles installed on theplatform of level 2 could significantly improve slope stability. Therefore, when carrying outengineering slope design in similar geological environments, the slope structure and materialcomposition should be fully identified, and the influence of groundwater on the slope stabilitystate should be emphasized. These results can provide a reference for similar slopereinforcement designs.

A Study of Dietary Habits and Health Relative Life Habits according to Gender on Chinese Students in Korea

Haining Liu,Jae-Seon Jang 한국식품영양학회 2017 한국식품영양학회 학술대회논문집(학술심포지움) Vol.2017 No.12

3D Printed Electronics of Non-contact Ink Writing Techniques: Status and Promise

Haining Zhang,Seung Ki Moon,Teck Hui Ngo 한국정밀공학회 2020 International Journal of Precision Engineering and Vol.7 No.2

Non-contact ink writing techniques are a newly developed three-dimensional printing technology to fabricate customized and flexible electronic devices, while dramatically reducing chemical waste and lowering manufacturing costs. However, the use of non-contact ink writing technologies for fabricating electronics is still limited due to printing quality. To develop an electronic device with high performance, conductive lines should be printed with high controllability and excellent uniformity. Under such circumstances, many traditional optimization methods have been proposed to improve the printing quality. However, as the non-contact ink writing process is very sensitive to the system drifts and random variations, in situ process monitoring and online optimization technologies to optimize the printed line quality are in demand for practical printing. In this paper, we describe the processes of non-contact ink writing techniques based on inkjet printing (IJP) and aerosol jet printing (AJP). The key influencing factors in the non-contact ink writing processes are also discussed based on the three main printing stages. Then we analyze the advantages and disadvantages of the IJP and AJP techniques and review the state of art in quality optimization and precise control techniques that can be adopted in non-contact ink writing process. Additionally, to further develop a non-contact ink writing system, the major challenges and limitations of the current printing quality optimization technologies are also highlighted in this paper.

중국 공자아카데미 문화전파 영향 요소 고찰: 문화사업과 산업, 언어, 미디어 측면을 중심으로

주해녕(Haining-Zhou) 조선대학교 사범대학 부설 교과교육연구소 2018 敎科敎育硏究 Vol.39 No.2

공자 아카데미는 중국 문화의 ‘소프트 파워 의 중요한 구성 요소로서 특히 중국 공산당의 제 19차 전국 대회에서 ‘인간운명공동체 라는 개념을 제가하며, 언어와 문화라는 미디어를 통해 전 세계적으로 중국의 가치관을 추진시킬 것이다. 이에 공자아카데미는 중구정부의 ‘일대일로(一帶一路) 의 실행과 ‘중국의 꿈’의 실현에 더 큰 중요한 역할을 발휘할 수 있게 한다. 본문은 주로 3가지 측면에서 공자아카데미의 문화 전파력의 영향 요소를 고찰한다. 첫째, 문화 전파 기구로서 공자아카데미의 문화사업성과 문화산업성에 대하여 분석 하였다. 또 공자아카데미가 언어 교육을 통해 중국 문화를 전파시키는데 있어서 현대사회 언어나 문자는 왜 여전히 중요한 역할을 담당하는지, 언어와 문자 미디어의 위치를 고찰하였다. 미디어 기술의 발달로 인해 현대사회에서 문화전파의 중요한 미디어는 바로 대중미디어와 인터넷미디어를 비롯한 다양한 정보 미디어다. 사람들은 미디 어로 만든 환경 곧 의사환경에서 살고 있다. 미디어로 만든 의사환경이 문화전파에 어떤영향을 끼치는지를 검토하였다. 결론적으로 앞에 제기된 영향 요인을 고려하면 공자아카데미의 문화전파력을 더 향상시킬 수 있는 전망이 생긴다. As an important component of the soft power of Chinese culture, the Confucius Institute promotes Chinese values worldwide through chinese language and culture. In particular, with the proposal of the concept of a community of human common destiny in the 19th National Congress of the Communist Party of China, the Confucius Institute will play a more important role in promoting the implementation of The Belt and Road policy and the realization of the Chinese Dream . This article mainly examines the influential factors of Confucius Academy s cultural power in three aspects. Firstly, as a cultural communication organization, the nature as a cultural institution (the publicity of culture) and industry(commercial nature of culture) of cultural communication should be studied. Secondly, Confucius Institute spreads Chinese culture through education. It shows that language and text can still play an important role in cultural communication in contemporary society. so this article will study the location of the language and text media in modern society. Thirdly, due to the development of media technology, people live in an pseudo-environment created by media. So we will examine the impact of the pseudo-environment on cultural communication. Finally, the conclusion will be drawn that only by taking into account these influential factors of cultural communication, can Confucius Institute s cultural communication power be enhanced.

2020년과 2023년 한국의 BIM 도입현황 비교 연구

장해녕(Zang, Haining),이강(Lee, Ghang),이경하(Lee, Kyungha) 대한건축학회 2023 대한건축학회 학술발표대회 논문집 Vol.43 No.1

SBA-15 Templated Mesoporous Graphitic C3N4 for Remarkably Enhanced Photocatalytic Degradation of Organic Pollutants under Visible Light

Hongjin Liu,Haining Wu,Jun Lv,Guangqing Xu,Xing Chen,Xinyi Zhang,Yucheng Wu 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2019 NANO Vol.14 No.11

Organic pollutants in water have been threatening public and environmental health. Developing efficient and sustainable photocatalysts working for degradation of organic pollutants under visible light becomes a big challenge. In this paper, high-efficiency visible light driven catalyst ordered mesoporous graphite nitride carbon (mpg-C3N4) was prepared by using SBA-15 as template and dicyandiamide (C2H4N4) as precursor. The specific surface area of mpg-C3N4 can be increased remarkably as compared to that of the bulk graphite nitrite carbon (g-C3N4) by adjusting the ratio of SBA-15 to dicyandiamide. Photocatalytic performance of mpg-C3N4 were evaluated systematically by degradation of Rhodamine B (RhB), malachite green (MG) and tetracycline hydrochloride (TC) under visible light irradiation. The results showed that the mpg-C3N4 (1 : 0.5) has the highest photocatalytic activity and stability and the degradation rate is for RhB, MG and TC are all more than seven times that of bulk g-C3N4. After five recycling runs, the mpg-C3N4 (1 : 0.5) remains high photocatalytic activities for the degradation of MG (94%) and TC (81%), respectively. Additionally, radical trapping experiments certified that the main active species are ·O2 - and h+, while the role of ·OH is irrelevant in the reaction processes. This work provides a promising pathway to prepare metal-free photocatalyst for degradation of organic pollutants under visible light irradiation.

Effects of Green Tea on Prostate Cancer Investigated by Interactions between GTP and Metal Ions

Shengrong Shen,Haining Yu 한국식품과학회 2005 식품과학과 산업 Vol.38 No.3