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Articles de revues sur le sujet « Switchable systems »

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Auteur : Grafiati

Publié le 4 mai 2024

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1

Bortakovsky, A. S., et I. V. Uryupin. « Optimization of Switchable Systems’ Trajectories ». Journal of Computer and Systems Sciences International 60, n^o 5 (septembre 2021) : 701–18. http://dx.doi.org/10.1134/s1064230721050051.

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Ramayya, G. P. « Multi-mode switchable breathing systems ». Anaesthesia 40, n^o 7 (juillet 1985) : 706–7. http://dx.doi.org/10.1111/j.1365-2044.1985.tb10968.x.

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Yang, Ying-Wei, Yu-Long Sun et Nan Song. « Switchable Host–Guest Systems on Surfaces ». Accounts of Chemical Research 47, n^o 7 (17 mars 2014) : 1950–60. http://dx.doi.org/10.1021/ar500022f.

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Katz, Evgeny. « Magneto-switchable Electrodes and Electrochemical Systems ». Electroanalysis 28, n^o 5 (27 octobre 2015) : 904–19. http://dx.doi.org/10.1002/elan.201500635.

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Mellerup, Soren K., et Suning Wang. « Boron-based stimuli responsive materials ». Chemical Society Reviews 48, n^o 13 (2019) : 3537–49. http://dx.doi.org/10.1039/c9cs00153k.

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Representative types of boron-based molecular systems that respond to external stimuli such as temperature, pressure, light, or chemicals (oxygen, acid, base etc.) are described in this review article. The boron molecules are classified according to their operating mechanisms, with emphasis on systems, which are based on switchable boron-donor bonds and switchable excited states.

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Vassalini, Irene, et Ivano Alessandri. « Switchable Stimuli-Responsive Heterogeneous Catalysis ». Catalysts 8, n^o 12 (22 novembre 2018) : 569. http://dx.doi.org/10.3390/catal8120569.

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Heterogeneous catalytic systems based on the use of stimuli-responsive materials can be switched from an “on” active state to an “off” inactive state, which contributes to endowing the catalysts with unique functional properties, such as adaptability, recyclability and precise spatial and temporal control on different types of chemical reactions. All these properties constitute a step toward the development of nature-inspired catalytic systems. Even if this is a niche area in the field of catalysis, it is possible to find in literature intriguing examples of dynamic catalysts, whose systematic analysis and review are still lacking. The aim of this work is to examine the recent developments of stimuli-responsive heterogeneous catalytic systems from the viewpoint of different approaches that have been proposed to obtain a dynamic control of catalytic efficiency. Because of the variety of reactions and conditions, it is difficult to make a quantitative comparison between the efficiencies of the considered systems, but the analysis of the different strategies can inspire the preparation of new smart catalytic systems.

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Dyda, Alexander A., Nguyen Van Thanh Van Thanh et Ksenya N. Chumakova. « Vessel heading control systems with switchable regulators ». Russian Journal of Water Transport, n^o 67 (15 juin 2021) : 169–77. http://dx.doi.org/10.37890/jwt.vi67.188.

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The purpose of this work is to study the possibilities of improving the quality of the processes of controlling the movement of the vessel along the course by combining individual standard controllers. Of the known scientific directions devoted to the problem being solved, the closest is the theory of systems with variable structure, in which, due to switching, a unique useful property is achieved, which are not possessed by individual switched structures. The article is devoted to the approach to the construction of the ship course control system, which is based on the principle of switching regulators during the transient process. This makes it possible to improve the quality of control processes in the system by using the features of individual regulators, in particular, the application of the switching principle made it possible to significantly increase the speed of the system in comparison with systems without switching and ensure the desired monotonic nature of the control process. The proposed approach is illustrated based on switchable P-controllers. The results of modeling the developed ship course control system are presented and discussed.

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Fursov, A. S., et E. F. Khusainov. « On the stabilization of switchable linear systems ». Differential Equations 51, n^o 11 (novembre 2015) : 1518–28. http://dx.doi.org/10.1134/s0012266115110130.

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Green, Katy A., Marie P. Cifuentes, Marek Samoc et Mark G. Humphrey. « Metal alkynyl complexes as switchable NLO systems ». Coordination Chemistry Reviews 255, n^o 21-22 (novembre 2011) : 2530–41. http://dx.doi.org/10.1016/j.ccr.2011.02.021.

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Liu Yang-Zheng, Jiang Chang-Sheng, Lin Chang-Sheng, Xiong Xing et Shi Lei. « A class of switchable 3D chaotic systems ». Acta Physica Sinica 56, n^o 6 (2007) : 3107. http://dx.doi.org/10.7498/aps.56.3107.

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Iffa, Emishaw, Mikael Salonvaara et Diana Hun. « Energy performance analysis of smart wall system with switchable insulation and thermal storage capacity ». Journal of Physics : Conference Series 2069, n^o 1 (1 novembre 2021) : 012092. http://dx.doi.org/10.1088/1742-6596/2069/1/012092.

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Abstract The ever-increasing global energy demand and the issues caused by population growth and unsustainable energy resource usages have several environmental and economic impacts. The on-demand capability of dynamic wall systems with switchable insulation systems can contribute toward energy efficiency and reduced electric cost using “building-as-a-battery.” In this paper, the performance of an exterior envelope system that employs a switchable insulation system is investigated. A COMSOL simulation was used to study the envelope performance under three switchable insulation locations in the wall system. The on and off switching cycle included insulating or conducting the exterior, interior, or both sides of the mass wall system. To validate the simulation work, an experimental test was conducted in climate chamber on a 4 × 8 in. wall system with identical wall components used in the COMSOL simulation. Results show a good agreement between the experiment and simulation results. The wall system with switchable insulation placed on the exterior side provided the highest interior inward heat flux when compared with the interior or split insulation. Also, an exterior switchable insulation system in addition to a thermal mass maintained a positive heat flow for more hours when the outdoor temperature was lower than the interior temperature.

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Tuncaboylu, Deniz Ceylan, et Christian Wischke. « Opportunities and Challenges of Switchable Materials for Pharmaceutical Use ». Pharmaceutics 14, n^o 11 (28 octobre 2022) : 2331. http://dx.doi.org/10.3390/pharmaceutics14112331.

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Switchable polymeric materials, which can respond to triggering signals through changes in their properties, have become a major research focus for parenteral controlled delivery systems. They may enable externally induced drug release or delivery that is adaptive to in vivo stimuli. Despite the promise of new functionalities using switchable materials, several of these concepts may need to face challenges associated with clinical use. Accordingly, this review provides an overview of various types of switchable polymers responsive to different types of stimuli and addresses opportunities and challenges that may arise from their application in biomedicine.

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Bąk, Krzysztof M., et Michał J. Chmielewski. « Sulfate Anion as a pH-Switchable Template : Three-State Switchable Systems Based on Diamidocarbazoles ». European Journal of Organic Chemistry 2015, n^o 19 (27 mai 2015) : 4077–80. http://dx.doi.org/10.1002/ejoc.201500546.

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Katz, Evgeny, et Sergiy Minko. « Enzyme-based logic systems interfaced with signal-responsive materials and electrodes ». Chemical Communications 51, n^o 17 (2015) : 3493–500. http://dx.doi.org/10.1039/c4cc09851j.

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Alfhaid, Latifah, William D. Seddon, Nicholas H. Williams et Mark Geoghegan. « Double-network hydrogels improve pH-switchable adhesion ». Soft Matter 12, n^o 22 (2016) : 5022–28. http://dx.doi.org/10.1039/c6sm00656f.

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Fan, Wei, Zhong Lin Wang, Ming Qing Xu et Ai Feng Wang. « Design and Impelemation of Two Switchable Chaotic Systems ». Advanced Materials Research 217-218 (mars 2011) : 1725–28. http://dx.doi.org/10.4028/www.scientific.net/amr.217-218.1725.

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A new chaotic system is built which is consists of two subsystems. A subsystem is analyzed such as equilibrium, eigenvalue, Lyapunov, dimension and Lyapunov exponent. A practical circuit is designed to realize the system and the experimentation is carried out. The manifold chaotic attractor of the two subsystems is observed in the oscillograph, it is good agree with simulation.

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Barberá, J., R. Iglesias, J. L. Serrano, T. Sierra, M. R. de la Fuente, B. Palacios, M. A. Pérez-Jubindo et J. T. Vázquez. « Switchable Columnar Metallomesogens. New Helical Self-Assembling Systems ». Journal of the American Chemical Society 120, n^o 12 (avril 1998) : 2908–18. http://dx.doi.org/10.1021/ja9735012.

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Hurenkamp, Johannes H., Jaap J. D. de Jong, Wesley R. Browne, Jan H. van Esch et Ben L. Feringa. « Tuning energy transfer in switchable donor–acceptor systems ». Organic & ; Biomolecular Chemistry 6, n^o 7 (2008) : 1268. http://dx.doi.org/10.1039/b719095f.

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19

Shim, Gayong, Seungbeom Ko, Dongyoon Kim, Quoc-Viet Le, Gyu Thae Park, Jaiwoo Lee, Taekhyun Kwon, Han-Gon Choi, Young Bong Kim et Yu-Kyoung Oh. « Light-switchable systems for remotely controlled drug delivery ». Journal of Controlled Release 267 (décembre 2017) : 67–79. http://dx.doi.org/10.1016/j.jconrel.2017.09.009.

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Yang, Ying-Wei, Yu-Long Sun et Nan Song. « ChemInform Abstract : Switchable Host-Guest Systems on Surfaces ». ChemInform 45, n^o 34 (7 août 2014) : no. http://dx.doi.org/10.1002/chin.201434245.

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Zolkefli, Amirul Aizat, Noor Azwan Shairi, Badrul Hisham Ahmad, Adib Othman, Nurulhalim Hassim, Zahriladha Zakaria, Imran Mohd Ibrahim et Huda A. Majid. « Switchable bandstop to allpass filter using cascaded transmission line SIW resonators in K-band ». Bulletin of Electrical Engineering and Informatics 10, n^o 5 (1 octobre 2021) : 2617–26. http://dx.doi.org/10.11591/eei.v10i5.2835.

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In this paper, a switchable bandstop to allpass filter using cascaded transmission line SIW resonators is proposed. The switchable filter is performed by the switchable cascaded transmission line SIW resonators using discrete PIN diodes. Therefore, it can be used for rejecting any unwanted frequencies in the communication systems. The proposed filter design is operated in K-band and targeted for millimeter wave front end system for 5G telecommunication. Two filter designs with different orientation (design A and B) are investigated for the best performance and compact size. As a result, design B is the best by giving a maximum attenuation of 39.5 dB at 26.4 GHz with the layout size of 33×30 mm.

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Zhao, Songliang, Huan Jiang, Jingyu Wang, Wenchang Zhu et Weiren Zhao. « Large-Range Switchable Asymmetric Transmission and Circular Conversion Dichroism in a VO2 Based Metasurface ». Photonics 10, n^o 8 (2 août 2023) : 893. http://dx.doi.org/10.3390/photonics10080893.

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Reconfigurable chiral metasurfaces with a dynamic polarization manipulation capability are highly required in optical integrated systems. In this paper, we simultaneously realized giant and large-range switchable asymmetric transmission (AT) and circular conversion dichroism (CCD) in a vanadium dioxide (VO2) based metasurface. The AT and CCD of the insulator VO2 based metasurface reached 0.95 and 0.92, respectively. Utilizing the insulator-to-metallic phase transition of VO2, the AT and CCD could be continuously switched to near zero. Furthermore, the physics mechanism of the giant and switchable AT and CCD were analyzed. The proposed metasurface with large-range switchable AT and CCD is promising in applications of biochemistry detection, chiral imaging, and biosensing.

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Dabbagh, Mohammad, et Moncef Krarti. « Optimal Control Strategies for Switchable Transparent Insulation Systems Applied to Smart Windows for US Residential Buildings ». Energies 14, n^o 10 (18 mai 2021) : 2917. http://dx.doi.org/10.3390/en14102917.

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This paper evaluates the potential energy use and peak demand savings associated with optimal controls of switchable transparent insulation systems (STIS) applied to smart windows for US residential buildings. The optimal controls are developed based on Genetic Algorithm (GA) to identify the automatic settings of the dynamic shades. First, switchable insulation systems and their operation mechanisms are briefly described when combined with smart windows. Then, the GA-based optimization approach is outlined to operate switchable insulation systems applied to windows for a prototypical US residential building. The optimized controls are implemented to reduce heating and cooling energy end-uses for a house located four US locations, during three representative days of swing, summer, and winter seasons. The performance of optimal controller is compared to that obtained using simplified rule-based control sets to operate the dynamic insulation systems. The analysis results indicate that optimized controls of STISs can save up to 81.8% in daily thermal loads compared to the simplified rule-set especially when dwellings are located in hot climates such as that of Phoenix, AZ. Moreover, optimally controlled STISs can reduce electrical peak demand by up to 49.8% compared to the simplified rule-set, indicating significant energy efficiency and demand response potentials of the SIS technology when applied to US residential buildings.

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Msellem, Pablo, Maksym Dekthiarenko, Nihal Hadj Seyd et Guillaume Vives. « Switchable molecular tweezers : design and applications ». Beilstein Journal of Organic Chemistry 20 (1 mars 2024) : 504–39. http://dx.doi.org/10.3762/bjoc.20.45.

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Switchable molecular tweezers are a unique class of molecular switches that, like their macroscopic analogs, exhibit mechanical motion between an open and closed conformation in response to stimuli. Such systems constitute an essential component of artificial molecular machines. This review will present selected examples of switchable molecular tweezers and their potential applications. The first part will be devoted to chemically responsive tweezers, including stimuli such as pH, metal coordination, and anion binding. Then, redox-active and photochemical tweezers will be presented.

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Albada, H. Bauke, Eyal Golub et Itamar Willner. « Rational design of supramolecular hemin/G-quadruplex–dopamine aptamer nucleoapzyme systems with superior catalytic performance ». Chemical Science 7, n^o 5 (2016) : 3092–101. http://dx.doi.org/10.1039/c5sc04832j.

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Kauth, Louisa, Eva Miriam Buhl, Julian Luka, Karolin Richter, Ulrich Commandeur et Christina Dickmeis. « Plug-and-Display Photo-Switchable Systems on Plant Virus Nanoparticles ». BioTech 11, n^o 4 (21 octobre 2022) : 49. http://dx.doi.org/10.3390/biotech11040049.

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Light can be used to regulate protein interactions with a high degree of spatial and temporal precision. Photo-switchable systems therefore allow the development of controllable protein complexes that can influence various cellular and molecular processes. Here, we describe a plant virus-based nanoparticle shuttle for the distribution of proteins that can be released when exposed to light. Potato virus X (PVX) is often used as a presentation system for heterologous proteins and epitopes, and has ideal properties for biomedical applications such as good tissue penetration and the ability to form hydrogels that present signaling molecules and promote cell adhesion. In this study, we describe three different systems attached to the surface of PVX particles: LOVTRAP, BphP1/QPAS1 and Dronpa145N. We demonstrated the functionality of all three photo-switchable protein complexes in vitro and the successful loading and unloading of PVX particles. The new systems provide the basis for promising applications in the biomedical and biomaterial sciences.

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Martinez-Cuezva, Alberto, Aurelia Pastor, Giacomo Cioncoloni, Raul-Angel Orenes, Mateo Alajarin, Mark D. Symes et Jose Berna. « Versatile control of the submolecular motion of di(acylamino)pyridine-based [2]rotaxanes ». Chemical Science 6, n^o 5 (2015) : 3087–94. http://dx.doi.org/10.1039/c5sc00790a.

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Meenakshi, Sudheesh Shukla, Jagriti Narang, Vinod Kumar, Penny Govender, Avi Niv, Chaudhery Hussain, Rui Wang, Bindu Mangla et Rajendran Babu. « Switchable Graphene-Based Bioelectronics Interfaces ». Chemosensors 8, n^o 2 (26 juin 2020) : 45. http://dx.doi.org/10.3390/chemosensors8020045.

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Integration of materials acts as a bridge between the electronic and biological worlds, which has revolutionized the development of bioelectronic devices. This review highlights the rapidly emerging field of switchable interface and its bioelectronics applications. This review article highlights the role and importance of two-dimensional (2D) materials, especially graphene, in the field of bioelectronics. Because of the excellent electrical, optical, and mechanical properties graphene have promising application in the field of bioelectronics. The easy integration, biocompatibility, mechanical flexibility, and conformity add impact in its use for the fabrication of bioelectronic devices. In addition, the switchable behavior of this material adds an impact on the study of natural biochemical processes. In general, the behavior of the interfacial materials can be tuned with modest changes in the bioelectronics interface systems. It is also believed that switchable behavior of materials responds to a major change at the nanoscale level by regulating the behavior of the stimuli-responsive interface architecture.

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Sharbati, Vahid, Pejman Rezaei, Ali Shahzadi et Mohammad M. Fakharian. « A planar UWB antenna based on MB-OFDM applications with switchable dual band-notched for cognitive radio systems ». International Journal of Microwave and Wireless Technologies 8, n^o 1 (15 octobre 2014) : 95–102. http://dx.doi.org/10.1017/s1759078714001317.

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In this paper, a switchable antenna with capability to operate in ultrawideband (UWB) frequency from 3 to 10.7 GHz with two switchable notch bands of 3.3–3.7 and 3.7–4.2 GHz, is presented for cognitive radio (CR) and multiband orthogonal frequency-division multiplexing (MB-OFDM) applications. The proposed antenna has a simple structure and compact size of 17 × 24 mm2. The antenna in the UWB characteristics is obtained using a circular radiator patch with an embedded T-slot on the patch and a rectangular parasitic element that is attached to the patch. The reconfigurability is also achieved by two L-shaped parasitic elements placed in the left and right of the patch that two ideal switches is inserted over the these elements and the circular patch. The function of the antenna can be changed by tuning status of the switches that make the notch bands in application frequencies. The measurement and simulation results show that the antenna has good characteristics for CR application and MB-OFDM, where the UWB antenna is required for spectrum sensing and the switchable band rejection antenna is used for reconfigurable operation.

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Ciampi, Simone, Nadim Darwish, Heather M. Aitken, Ismael Díez-Pérez et Michelle L. Coote. « Harnessing electrostatic catalysis in single molecule, electrochemical and chemical systems : a rapidly growing experimental tool box ». Chemical Society Reviews 47, n^o 14 (2018) : 5146–64. http://dx.doi.org/10.1039/c8cs00352a.

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Electrostatic catalysis, once considered theoretical daydreaming, is poised to enter mainstream chemistry, with viable platforms including single molecule experiments, electrified interfaces and pH-switchable charges.

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Tang, Yuping, Yanmei He et Qinghua Fan. « Artificial Stimuli-Responsive Catalytic Systems for Switchable Asymmetric Catalysis ». Chinese Journal of Organic Chemistry 40, n^o 11 (2020) : 3672. http://dx.doi.org/10.6023/cjoc202006076.

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Li, Zhiyong, Ying Feng, Xiaomin Liu, Huiyong Wang, Yuanchao Pei, H. Q. Nimal Gunaratne et Jianji Wang. « Light-Triggered Switchable Ionic Liquid Aqueous Two-Phase Systems ». ACS Sustainable Chemistry & ; Engineering 8, n^o 40 (18 septembre 2020) : 15327–35. http://dx.doi.org/10.1021/acssuschemeng.0c05703.

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Al-Kutubi, Hanan, Hamid Reza Zafarani, Liza Rassaei et Klaus Mathwig. « Electrofluorochromic systems : Molecules and materials exhibiting redox-switchable fluorescence ». European Polymer Journal 83 (octobre 2016) : 478–98. http://dx.doi.org/10.1016/j.eurpolymj.2016.04.033.

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Katz, Evgeny. « Modified Electrodes and Electrochemical Systems Switchable by Light Signals ». Electroanalysis 30, n^o 5 (8 février 2018) : 759–97. http://dx.doi.org/10.1002/elan.201800015.

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Katz, Evgeny. « Modified Electrodes and Electrochemical Systems Switchable by Temperature Changes ». Electroanalysis 28, n^o 9 (23 mai 2016) : 1916–29. http://dx.doi.org/10.1002/elan.201600235.

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Barner-Kowollik, Christopher, et Friedrich Georg Schmidt. « Switchable Macromolecular Systems - From Dynamic Chemistry to Self-Healing ». Macromolecular Chemistry and Physics 213, n^o 2 (16 janvier 2012) : 129–30. http://dx.doi.org/10.1002/macp.201100574.

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Ghorbani-Choghamarani, Arash, et Zahra Taherinia. « Recent advances utilized in artificial switchable catalysis ». RSC Advances 12, n^o 36 (2022) : 23595–617. http://dx.doi.org/10.1039/d2ra03842k.

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Catalytic systems based on the use of stimuli–responsive materials can be switched from an “on” active state to an “off” inactive state. Consequently, switchable catalysis, both chemical and biological, has played a pivotal role in this ‘greening’ of the pharmaceutical industry.

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Iqbal, Amjad, Amor Smida, Lway Faisal Abdulrazak, Omar A. Saraereh, Nazih Khaddaj Mallat, Issa Elfergani et Sunghwan Kim. « Low-Profile Frequency Reconfigurable Antenna for Heterogeneous Wireless Systems ». Electronics 8, n^o 9 (31 août 2019) : 976. http://dx.doi.org/10.3390/electronics8090976.

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A low-profile (0.21 λ g × 0.35 λ g × 0.02 λ g ) and a simply-structured frequency-switchable antenna with eight frequency choices is presented in this paper. The radiating structure (monopole) is printed on a 1.6-mm thicker, commercially-available substrate of FR-4 ( ϵ r = 4.4, tan δ = 0.020). Specifically, it uses three PIN diodes in the designated places to shift the resonant bands of the antenna. The antenna operates at four different modes depending on the ON and OFF states of the PIN diodes. While in each mode, the antenna covers two unique frequencies (Mode 1 = 1.8 and 3.29 GHz, Mode 2 = 2.23 and 3.9 GHz, Mode 3 = 2.4 and 4.55 GHz, and Mode 4 = 2.78 and 5.54 GHz). The performance results show that the proposed antenna scheme explores significant gain (>1.5 dBi in all modes) and reasonable efficiency (>82% in all modes) for each mode. Using a high-frequency structure simulator (HFSS), the switchable antenna is designed and optimized. The fabricated model along with the PIN diode and biasing network is tested experimentally to validate the simulation results. The proposed antenna may also be combined in compact and heterogeneous radio frequency (RF) front-ends because of its small geometry and efficient utilization of the frequency spectrum.

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Wang, Lili, Yaping Feng, Yi Zhou, Meijuan Jia, Guojie Wang, Wei Guo et Lei Jiang. « Photo-switchable two-dimensional nanofluidic ionic diodes ». Chemical Science 8, n^o 6 (2017) : 4381–86. http://dx.doi.org/10.1039/c7sc00153c.

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2D nanofluidic systems are endowed with photo-responsive ionic rectification by asymmetric modification with spiropyran. Structural and photo-induced charge heterostructures result in smart 2D ionic rectifiers with a maximum rectification ratio of 48.

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Yang, Fan, Dong Li et Hong Qing Tu. « Constructing a Class of Four-Dimensional Correlative and Switchable Hyperchaotic Systems ». Applied Mechanics and Materials 44-47 (décembre 2010) : 1802–6. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.1802.

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A class of four-dimensional correlative and switchable hyperchaotic systems were built by adding state variables, nonlinear functions or using the method of anti-control the three-dimensional chaotic system. We studied detailedly some of its basic properties, such as the feature of equilibrium, the phase portraits of hyper chaotic attractor, Lyapunov exponent and the evolutive course of systemic dynamical action.

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Carlier, Remy, Mohammad Dabbagh et Moncef Krarti. « Impact of Wall Constructions on Energy Performance of Switchable Insulation Systems ». Energies 13, n^o 22 (19 novembre 2020) : 6068. http://dx.doi.org/10.3390/en13226068.

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This paper evaluates the potential energy savings when switchable insulation systems (SIS) are applied to walls of residential buildings located in Belgium and other locations in Europe. The study considers two low-energy prototypical dwellings (an apartment and a detached house) that are representative of post-2010 constructions and renovations in Belgium. Using an 3R2C-based analysis tool, the performance of both dwellings is evaluated with static and dynamic wall insulation systems. First, the switchable insulating system is described along with its associated simple 2-step rule-based control strategy. Then the modeling strategy and simulation analysis tools are presented. In Belgium, it was found that SIS-integrated walls allow energy savings up to 3.7% for space heating and up to 98% for cooling. Moreover, it was found that to further reduce the energy consumption of SIS-integrated buildings in various European climates, thermal mass placement needs to be considered. By optimizing the placement and the parameters of the various wall layers, it is possible to increase the space heating savings by up to a factor of 4 and those of cooling by up to a factor of 2.5.

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Diment, Wilfred T., Tim Stößer, Ryan W. F. Kerr, Andreas Phanopoulos, Christopher B. Durr et Charlotte K. Williams. « Ortho-vanillin derived Al(iii) and Co(iii) catalyst systems for switchable catalysis using ε-decalactone, phthalic anhydride and cyclohexene oxide ». Catalysis Science & ; Technology 11, n^o 5 (2021) : 1737–45. http://dx.doi.org/10.1039/d0cy02164d.

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Chigrinov, Vladimir, Jiatong Sun et Xiaoqian Wang. « Photoaligning and Photopatterning : New LC Technology ». Crystals 10, n^o 4 (20 avril 2020) : 323. http://dx.doi.org/10.3390/cryst10040323.

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We demonstrate a physical model of photoalignment and photopatterning based on rotational diffusion in solid azo-dye nanolayers. We also highlight the new applications of photoalignment and photopatterning in display and photonics such as: (i) liquid crystal (LC) E-paper devices, including optically rewritable LC E-paper on flexible substrates as 3D E-paper, as well as optically rewritable technology for photonics devices; (ii) photonics LC devices, such as LC Switches, polarization controllers and polarization rotators, variable optical attenuators, LC filled photonic crystal fiber, switchable diffraction grating; (iii) patterned micro-polarizer array using photo-alignment technology for image sensor; (iv) electrically tunable liquid crystal q-plates; (v) electrically switchable liquid crystal Fresnel lens; (vi) liquid crystal optical elements with integrated Pancharatnam-Berry phases. We are sure, that in the field of (LC), the main point is no longer display research, but new photonic applications of LC are emerging in telecommunication, fiber optical communication systems, sensors, switchable lenses, LC light converters and other LC photonics devices.

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de Vink, Pim J., Tim van der Hek et Luc Brunsveld. « Light-driven release of cucurbit[8]uril from a bivalent cage ». Chemical Science 12, n^o 19 (2021) : 6726–31. http://dx.doi.org/10.1039/d1sc01410b.

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Photo-switchable supramolecular systems offer unique entries to control biomolecular process, as illustrated via the light-induced release of cucurbit[8]uril from a bivalent cage molecule and its subsequent activation of the caspase-9 enzyme.

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Spisak, Shaun, Brett O’Brien et Marc Ostermeier. « A bacterial dual positive and negative selection system for dCas9 activity ». PLOS ONE 17, n^o 6 (3 juin 2022) : e0269270. http://dx.doi.org/10.1371/journal.pone.0269270.

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The engineering of switchable or activatable dCas9 proteins would benefit from a single system for both positive and negative selection of dCas9 activity. Most systems that are used to interrogate dCas9 libraries use a fluorescent protein screen or an antibiotic selection for active dCas9 variants. To avoid some of the limitations of these systems, we have developed a single system capable of selecting for either active or inactive dCas9 variants. E. coli expressing active dCas9 variants are isolated in the positive selection system through growth in the presence of ampicillin. The negative selection can isolate cells lacking dCas9 activity through two separate mechanisms: growth in M9 minimal media or growth in media containing streptomycin. This system is capable of enriching for rare dCas9 variants up to 9,000-fold and possesses potential utility in directed evolution experiments to create switchable dCas9 proteins.

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Dabbagh, M., et M. Krarti. « Experimental evaluation of the performance for switchable insulated shading systems ». Energy and Buildings 256 (février 2022) : 111753. http://dx.doi.org/10.1016/j.enbuild.2021.111753.

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Valentin, Louis, Mohammad Dabbagh et Moncef Krarti. « Benefits of switchable insulation systems for residential buildings in France ». Energy and Buildings 259 (mars 2022) : 111868. http://dx.doi.org/10.1016/j.enbuild.2022.111868.

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Shukla, Atindra D., Bishwajit Ganguly, Paresh C. Dave, Anunay Samanta et Amitava Das. « Redox switchable NIR dye derived from ruthenium–dioxolene–porphyrin systems ». Chem. Commun., n^o 22 (2002) : 2648–49. http://dx.doi.org/10.1039/b206000k.

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Espenhahn, Tilo, Dietmar Berger, Stefan Hameister, Ruben Huhne, Ludwig Schultz et Kornelius Nielsch. « Design and Validation of Switchable Tracks for Superconducting Levitation Systems ». IEEE Transactions on Applied Superconductivity 27, n^o 4 (juin 2017) : 1–5. http://dx.doi.org/10.1109/tasc.2017.2652542.

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Shen, Xiuliang, Toshiyuki Moriuchi et Toshikazu Hirao. « Redox-switchable π-conjugated systems bearing terminal ruthenium(II) complexes ». Tetrahedron Letters 44, n^o 42 (octobre 2003) : 7711–14. http://dx.doi.org/10.1016/j.tetlet.2003.08.102.

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