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1. Light-induced shape morphing of thin films

Author:
Kuenstler, Alexa S.; Hayward, Ryan C.
Source:
Current opinion in colloid & interface science 2019 v.40 pp. 70-86
ISSN:
1359-0294
Subject:
lighting,   etc   ; deformation; optics; photochemistry;     Show all 4 Subjects
Abstract:
... Shape transformation of thin two-dimensional sheets into three-dimensional structures using light is of great interest for remotely controlled fabrication, surface modulation, and actuation. Over the last few decades, significant efforts have been made to develop material systems incorporating photochemical or photothermal elements to drive deformation in response to illumination. However, the ful ...
DOI:
10.1016/j.cocis.2019.01.009

2. The self-regulatory power of environmental lighting: The effect of illuminance and correlated color temperature

Author:
Kang, Seo Yoon; Youn, Nara; Yoon, Heakyung Cecilia
Source:
Journal of environmental psychology 2019 v.62 pp. 30-41
ISSN:
0272-4944
Subject:
lighting,   etc   ; cognition; color; temperature;     Show all 4 Subjects
Abstract:
... Ambient lighting—in particular, its brightness—is known to affect cognitive activation and self-control, but research on lighting has reported mixed effects. Some studies have shown that brightness increases cognitive activation, whereas others have shown that darkness prompts cognitive activation. In this research, we attempted to reconcile those inconsistent findings by investigating how lightin ...
DOI:
10.1016/j.jenvp.2019.02.006

3. Unidirectional Real-Time Photoswitching of Diarylethene Molecular Monolayer Junctions with Multilayer Graphene Electrodes

Author:
Koo, Jeongmin; Jang, Yeonsik; Martin, León; Kim, Dongku; Jeong, Hyunhak; Kang, Keehoon; Lee, Woocheol; Kim, Junwoo; Hwang, Wang-Taek; Xiang, Dong; Scheer, Elke; Kabdulov, Mikhail; Huhn, Thomas; Pauly, Fabian; Lee, Takhee
Source:
ACS applied materials & interfaces 2019 v.11 no.12 pp. 11645-11653
ISSN:
1944-8252
Subject:
lighting,   etc   ; electrodes; gold; graphene;     Show all 4 Subjects
Abstract:
... We fabricate and characterize vertical molecular junctions consisting of self-assembled monolayers of diarylethene (DAE) contacted by a multilayer graphene (MLG) electrode on the top and gold on the bottom. The DAE molecular junctions show two stable electrical states, a closed state (high conductance) or an open state (low conductance), which are created upon illumination with UV or visible light ...
DOI:
10.1021/acsami.8b19372

4. Solar-driven capacity enhancement of aqueous redox batteries with a vertically oriented tin disulfide array as both the photo-cathode and battery-anode

Author:
TianThese authors contributed equally to this work., Zhengnan; Li, Chao; Cai, Jingsheng; Zhang, Li; Lu, Chen; Song, Yingze; Jiang, Tao; Sun, Jingyu; Dou, Shixue
Source:
Chemical communications 2019 v.55 no.9 pp. 1291-1294
ISSN:
1364-548X
Subject:
lighting,   etc   ; batteries; photocatalysis; tin;     Show all 4 Subjects
Abstract:
... An innovative photo-enhanced aqueous redox battery (PEARB) built upon a simple two-electrode configuration is demonstrated. The synergy of the photo-cathode and battery-anode is realized by directly growing vertically oriented SnS₂ arrays on Ti mesh, manifesting advanced photo-electrocatalytic activities. The assembled PEARB achieves 2.5-fold capacity enhancement under solar illumination. ...
DOI:
10.1039/c8cc08684b

5. Pigeons spontaneously form three-dimensional shape categories

Author:
Peissig, Jessie J.; Young, Michael E.; Wasserman, Edward A.; Biederman, Irving
Source:
Behavioural processes 2019 v.158 pp. 70-76
ISSN:
0376-6357
Subject:
lighting,   etc   ; bricks; learning; pigeons;     Show all 4 Subjects
Abstract:
... We explored the pigeon’s representation of the shape of simple three-dimensional objects (geons) rotated in depth (four views each of four geons). Pigeons assigned to the Categorization group had to respond differentially to images of four different geons—termed arch, barrel, brick, and wedge—based on their 3D shape, regardless of the orientation of the object. Pigeons assigned to the Pseudocatego ...
DOI:
10.1016/j.beproc.2018.11.003

6. High performance low-dimensional perovskite solar cells based on a one dimensional lead iodide perovskite

Author:
Ma, Chunqing; Shen, Dong; Huang, Bin; Li, Xiaocui; Chen, Wen-Cheng; Lo, Ming-Fai; Wang, Pengfei; Hon-Wah Lam, Michael; Lu, Yang; Ma, Biwu; Lee, Chun-Sing
Source:
Journal of materials chemistry A 2019 v.7 no.15 pp. 8811-8817
ISSN:
2050-7496
Subject:
lighting,   etc   ; chemistry; lead; solar cells;     Show all 4 Subjects
Abstract:
... Molecular level one-dimensional (1D) metal halide perovskites possessing large exciton binding energies are generally considered unfavorable for photovoltaic devices. To date, applying 1D perovskites as active materials for solar cells has not been as well explored as 3D and 2D perovskites. Herein, we report a new low-dimensional hybrid perovskite based on 1D 1,4-benzene diammonium lead iodide (BD ...
DOI:
10.1039/c9ta01859j

7. Photo-Controlled Ferroelectric-Based Nanoactuators

Author:
Rubio-Marcos, Fernando; Páez-Margarit, David; Ochoa, Diego A.; Del Campo, Adolfo; Fernández, José F.; García, José E.
Source:
ACS applied materials & interfaces 2019 v.11 no.15 pp. 13921-13926
ISSN:
1944-8252
Subject:
lighting,   etc   ; energy; materials science; photons;     Show all 4 Subjects
Abstract:
... Finding a feasible principle for a future generation of nano-optomechanical systems is a matter of intensive research, because it may provide new device prospects for optoelectronics and nanomanipulation techniques. Here we show that the strain of a ferroelectric crystal can be manipulated to achieve macroscopic, stable, and reproducible dimensional changes using illumination with photon energy be ...
DOI:
10.1021/acsami.9b01628

8. Energy-saving opportunities of direct-DC loads in buildings

Author:
Gerber, Daniel L.; Liou, Richard; Brown, Richard
Source:
Applied energy 2019 v.248 pp. 274-287
ISSN:
0306-2619
Subject:
lighting,   etc   ; buildings; energy conservation; markets; prototypes; refrigerators;     Show all 6 Subjects
Abstract:
... Despite the recent interest in direct current (DC) power distribution in buildings, the market for DC-ready loads remains small. The existing DC loads in various products or research test beds are not always designed to efficiently leverage the benefits of DC. This work addresses a pressing need for a study into the development of efficient DC loads. In particular, it focuses on documenting and de ...
DOI:
10.1016/j.apenergy.2019.04.089

9. Identifying overcast, partly cloudy and clear skies by illuminance fluctuations

Author:
Lou, Siwei; Li, Danny.H.W.; Chen, Wenqiang
Source:
Renewable energy 2019 v.138 pp. 198-211
ISSN:
0960-1481
Subject:
lighting,   etc   ; cloud cover; solar energy; solar radiation;     Show all 4 Subjects
Abstract:
... The overcast, partly cloudy and clear sky conditions can determine the diffuse sky radiance and luminance distributions over the sky dome, and thus are crucial for evaluating the solar energy and daylight on and through building envelopes. It is preferable to properly identify the sky condition and determining its diffuse radiance and luminance distribution patterns by the readily available data. ...
DOI:
10.1016/j.renene.2019.01.080

10. Albedo estimation for real-time 3D reconstruction using RGB-D and IR data

Author:
Stotko, Patrick; Weinmann, Michael; Klein, Reinhard
Source:
ISPRS journal of photogrammetry and remote sensing 2019 v.150 pp. 213-225
ISSN:
0924-2716
Subject:
lighting,   etc   ; geometry; reflectance; robots; vision; wavelengths;     Show all 6 Subjects
Abstract:
... Reconstructing scenes in real-time using low-cost sensors has gained increasing attention in recent research and enabled numerous applications in graphics, vision, and robotics. While current techniques offer a substantial improvement regarding the quality of the reconstructed geometry, the degree of realism of the overall appearance is still lacking as the reconstruction of accurate surface appea ...
DOI:
10.1016/j.isprsjprs.2019.01.018

11. High-Performance Electrofluorochromic Switching Devices Using a Novel Arylamine-Fluorene Redox-Active Fluorophore

Author:
Corrente, Giuseppina A.; Fabiano, Eduardo; La Deda, Massimo; Manni, Francesca; Gigli, Giuseppe; Chidichimo, Giuseppe; Capodilupo, Agostina-L.; Beneduci, Amerigo
Source:
ACS applied materials & interfaces 2019 v.11 no.13 pp. 12202-12208
ISSN:
1944-8252
Subject:
fluorescent lighting,   etc   ; electrochemistry; fluorescent dyes; materials science;     Show all 4 Subjects
Abstract:
... Fluorescent light modulation by small electric potentials has gained huge interest in the past few years. This phenomenon, called electrofluorochromism, is of the utmost importance for applications in optoelectronic devices. Huge efforts are being addressed to developing electrofluorochromic systems with improved performances. One of the most critical issue is their low cyclability, which hampers ...
DOI:
10.1021/acsami.9b01656

12. Vapor transport deposited tin monosulfide for thin-film solar cells: effect of deposition temperature and duration

Author:
Lee, Dajeong; Cho, Jae Yu; Yun, Hee-Sun; Lee, Doh-Kwon; Kim, Taehoon; Bang, Kijoon; Lee, Yun Seog; Kim, Ho-Young; Heo, Jaeyeong
Source:
Journal of materials chemistry A 2019 v.7 no.12 pp. 7186-7193
ISSN:
2050-7496
Subject:
lighting,   etc   ; solar cells; temperature; tin; vapors;     Show all 5 Subjects
Abstract:
... The influence of the vapor transport deposition (VTD) conditions of tin sulfide (SnS) on the formation of secondary phases, preferred orientation, and solar cell performance is investigated in this study. It is concluded that 600 °C is the optimal growth temperature for the formation of pure SnS absorbers. When the growth temperature was 550 °C, the formation of secondary Sn₂S₃ and SnS₂ phases was ...
DOI:
10.1039/c8ta09820d

13. Defect-rich and ultrathin CoOOH nanolayers as highly efficient oxygen evolution catalysts for photoelectrochemical water splitting

Author:
Zhang, Beibei; Huang, Xiaojuan; Hu, Hongyan; Chou, Lingjun; Bi, Yingpu
Source:
Journal of materials chemistry A 2019 v.7 no.9 pp. 4415-4419
ISSN:
2050-7496
Subject:
lighting,   etc   ; catalysts; electric current; oxygen production;     Show all 4 Subjects
Abstract:
... Herein, we have demonstrated that the plasma-exfoliation of CoOOH nanolayers (∼8 nm) into an ultrathin structure (∼2 nm) could significantly improve the PEC activities of BiVO₄ photoanodes. A photocurrent density of 4.9 mA cm⁻² and a charge separation efficiency of 89% have been achieved at 1.23 VRHE under AM 1.5G illumination, which are more than two-fold higher than those of pristine CoOOH/BiVO₄ ...
DOI:
10.1039/c8ta12012a

14. Vacuum-deposited perovskite photovoltaics for highly efficient environmental light energy harvesting

Author:
Chen, Chien-Yu; Lee, Wei-Hung; Hsiao, Sheng-Yi; Tsai, Wei-Lun; Yang, Lin; Lin, Hong-Lin; Chou, He-Jun; Lin, Hao-Wu
Source:
Journal of materials chemistry A 2019 v.7 no.8 pp. 3612-3617
ISSN:
2050-7496
Subject:
lighting,   etc   ; chemistry; electronics; energy; fullerene; solar energy;     Show all 6 Subjects
Abstract:
... The performance of vacuum-deposited organometal halide perovskite devices under low-intensity illumination was investigated. The low defect density of the vacuum-deposited perovskite thin film facilitates the development of a high performance device with low-cost C₆₀ as the electron transporting layer, which is superior to solution-processed cells made by a 2-step spin-casting method with expensiv ...
DOI:
10.1039/c8ta11515j

15. Analogue of dual-controlled electromagnetically induced transparency based on a graphene metamaterial

Author:
Liu, Chenxi; Liu, Peiguo; Yang, Cheng; Lin, Yue; Liu, Hanqing
Source:
Carbon 2019 v.142 pp. 354-362
ISSN:
0008-6223
Subject:
lighting,   etc   ; angle of incidence; buffers; energy; graphene;     Show all 5 Subjects
Abstract:
... Analogue of dual-controlled electromagnetically induced transparency (EIT) based on graphene metamaterial is proposed and investigated. The structure consists of a simple graphene patch array connected by horizontal wires. The phase coupling induced by the oblique illumination results in the EIT-like spectral response in the investigated frequency range. By mechanically adjusting the incidence ang ...
DOI:
10.1016/j.carbon.2018.10.061

16. Randomized trial of polychromatic blue-enriched light for circadian phase shifting, melatonin suppression, and alerting responses

Author:
Hanifin, J.P.; Lockley, S.W.; Cecil, K.; West, K.; Jablonski, M.; Warfield, B.; James, M.; Ayers, M.; Byrne, B.; Gerner, E.; Pineda, C.; Rollag, M.; Brainard, G.C.
Source:
Physiology & behavior 2019 v.198 pp. 57-66
ISSN:
0031-9384
Subject:
fluorescent lighting,   etc   ; melatonin; photons; protocols; sleep; wavelengths;     Show all 6 Subjects
Abstract:
... Wavelength comparisons have indicated that circadian phase-shifting and enhancement of subjective and EEG-correlates of alertness have a higher sensitivity to short wavelength visible light. The aim of the current study was to test whether polychromatic light enriched in the blue portion of the spectrum (17,000 K) has increased efficacy for melatonin suppression, circadian phase-shifting, and aler ...
DOI:
10.1016/j.physbeh.2018.10.004

17. Synthesis of Two-Dimensional Alloy Ga₀.₈₄In₀.₁₆Se Nanosheets for High-Performance Photodetector

Author:
Yu, Miaomiao; Li, Hang; Liu, He; Qin, Fanglu; Gao, Feng; Hu, Yunxia; Dai, Mingjin; Wang, Lifeng; Feng, Wei; Hu, PingAn
Source:
ACS applied materials & interfaces 2018 v.10 no.50 pp. 43299-43304
ISSN:
1944-8252
Subject:
lighting,   etc   ; alloys; nanosheets;     Show all 3 Subjects
Abstract:
... The electronic and optoelectronic properties of 2D alloy Ga₀.₈₄In₀.₁₆Se were investigated for the first time. 2D Ga₀.₈₄In₀.₁₆Se FETs show p-type conduction behaviors. 2D Ga₀.₈₄In₀.₁₆Se photodetectors show high photoresponse in the visible light range of 500 to 700 nm. The responsivity value is 258 A/W for alloy photodetector (500 nm illumination), and it is 92 times and 20 times higher than those ...
DOI:
10.1021/acsami.8b15317

18. Development of powder distribution model of discontinuous coaxial powder stream in laser direct metal deposition

Author:
Wu, Jiazhu; Zhao, Penghui; Wei, Haiying; Lin, Qida; Zhang, Yi
Source:
Powder technology 2018 v.340 pp. 449-458
ISSN:
0032-5910
Subject:
lighting,   etc   ; models; powders;     Show all 3 Subjects
Abstract:
... For laser direct metal deposition (LDMD) process, a general powder distribution model of discontinuous coaxial powder stream (DCPS) was developed based on homogeneous transformation. An image-based powder measurement (IBPM) technique, whose illumination light is a cylindrical light, was used to acquire powder distribution characteristics. A set of data preprocessing methods were proposed to valida ...
DOI:
10.1016/j.powtec.2018.09.032

19. Phase-Engineering-Driven Enhanced Electronic and Optoelectronic Performance of Multilayer In2Se3 Nanosheets

Author:
Feng, Wei; Gao, Feng; Hu, Yunxia; Dai, Mingjin; Liu, He; Wang, Lifeng; Hu, PingAn
Source:
ACS applied materials & interfaces 2018 v.10 no.33 pp. 27584-27588
ISSN:
1944-8252
Subject:
lighting,   etc   ; engineering; nanosheets;     Show all 3 Subjects
Abstract:
... Here, we report electronic and optoelectronic performance of multilayer In₂Se₃ are effectively regulated by phase engineering. The electron mobility is increased to 22.8 cm² V–¹ s–¹ for β-In₂Se₃ FETs, which is 18 times higher than 1.26 cm² V–¹ s–¹ of α-In₂Se₃ FETs. The enhanced electronic performance is attributed to larger carrier sheet density and lower contact resistance. Multilayer β-In₂Se₃ ph ...
DOI:
10.1021/acsami.8b10194

20. Organic dye-catalyzed radical ring expansion reaction

Author:
Deguchi, Masato; Fujiya, Akitoshi; Yamaguchi, Eiji; Tada, Norihiro; Uno, Bunji; Itoh, Akichika
Source:
RSC advances 2018 v.8 no.28 pp. 15825-15830
ISSN:
2046-2069
Subject:
fluorescent lighting,   etc   ; erythrosine; irradiation;     Show all 3 Subjects
Abstract:
... Herein, we reported an attractive method for synthesizing medium-sized rings that are catalyzed by erythrosine B under fluorescent light irradiation. This synthetic approach featured mild conditions, a facile procedure, a broad substrate scope, and moderate-to-good yields. ...
DOI:
10.1039/c8ra02383b