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Articles de revues sur le sujet « Room temperature assembly »

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Auteur : Grafiati
Publié le 14 septembre 2024

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1

Peng, Lin Fa, Dian Kai Qiu, Pei Yun Yi et Xin Min Lai. « Investigation of Thermal Influence on the Assembly of Polymer Electrolyte Membrane Fuel Cell Stacks ». Advanced Materials Research 512-515 (mai 2012) : 1509–14. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.1509.

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The assembly force in a proton exchange membrane fuel cell (PEMFC) stack affects the characteristics of the porosity and electrical conductivity. Generally, the stack is assembled at room temperature while it’s operated at about 80 °Cor even higher. As a result, the assembly pressure can’t keep constant due to thermal expansion. This paper focuses on the contact pressure between membrane electrode assembly (MEA) and bipolar plates in real operations. A three-dimensional finite element (FE) model for the assembly process is established with coupled thermal-mechanical effects. The discipline of contact pressure under thermal-mechanical effect is investigated. A single cell stack is fabricated in house for the analysis of contact pressures on gas diffusion layer at different temperatures. The results show that as the temperature increases, contact pressure increases due to thermal expansion. It indicates that the influence of thermal expansion due to temperature variation should be taken into consideration for the design of the stack assembly process.
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2

Deng, Yuchen, Peng Li, Jiatong Li, Daolai Sun et Huanrong Li. « Color-Tunable Aqueous Room-Temperature Phosphorescence Supramolecular Assembly ». ACS Applied Materials & ; Interfaces 13, no 12 (22 mars 2021) : 14407–16. http://dx.doi.org/10.1021/acsami.1c01174.

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Chen, Jian, et Wayne A. Weimer. « Room-Temperature Assembly of Directional Carbon Nanotube Strings ». Journal of the American Chemical Society 124, no 5 (février 2002) : 758–59. http://dx.doi.org/10.1021/ja017384t.

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4

Dubey, V., E. Beyne, J. Derakhshandeh et I. De Wolf. « Physics of self-aligned assembly at room temperature ». Physics of Fluids 30, no 1 (janvier 2018) : 012001. http://dx.doi.org/10.1063/1.5004797.

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5

Yang, Lu-feng, De-qing Chu, Hui-lou Sun et Ge Ge. « Room temperature synthesis of flower-like CaCO3 architectures ». New Journal of Chemistry 40, no 1 (2016) : 571–77. http://dx.doi.org/10.1039/c5nj02141c.

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Matteau, Jacques. « NanoBond® Assembly – A Rapid, Room Temperature Soldering Process ». International Symposium on Microelectronics 2011, no 1 (1 janvier 2011) : 000521–26. http://dx.doi.org/10.4071/isom-2011-wa2-paper5.

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Indium Corporation of America has commercialized a new technology that will revolutionize how manufacturers join components using solder materials. (See Figure 1) The joining process is based on the use of reactive multilayer foils as local heat sources. The foils are a new class of nano-engineered materials, in which self-propagating exothermic reactions can be ignited at room temperature through an ignition process. By inserting a multilayer foil between two solder layers and two components, heat generated by the reaction in the foil melts the solder and consequently bonds are completed at room temperature in air, argon or vacuum in approximately one second. The resulting metallic joints exhibit thermal conductivities two orders of magnitude higher, and thermal resistivity’s an order of magnitude lower, than current commercial TIMs. The use of reactive foils as a local heat source eliminates the need for torches, furnaces, or lasers, speeds the soldering processes, and dramatically reduces the total heat that is needed. Thus, temperature-sensitive or small components can be joined without thermal damage or excessive heating. In addition, mismatches in thermal contraction on cooling can be avoided because components see very small increases in temperature. This is particularly beneficial for joining metals to ceramics. The fabrication and characterization of the reactive foils is described, and the value proposition for NanoBonding is presented. This presentation also shows the applicability of this platform technology to many areas of packaging including Thermal Interface Materials, microelectronics, optoelectronics, and Light Emitting Diodes (LEDs)
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Toda, Kenji, Hiroki Sato, Akira Sugawara, Saori Tokuoka, Kazuyoshi Uematsu et Mineo Sato. « Self-Assembly of Perovskite Nanosheet Colloid at Room Temperature ». Key Engineering Materials 301 (janvier 2006) : 227–30. http://dx.doi.org/10.4028/www.scientific.net/kem.301.227.

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We present a new method for soft chemical synthesis of perovskite materials. Perovskite K1-xLixNbO3 powders are produced by an ion-exchange reaction of layered perovskite precursor, K2NbO3F, with lithium chloride in water at room temperature. X-ray diffraction and X-ray fluorescent spectroscopic studies show that a mechanism of the ion-exchange reaction is a self-assembly between the perovskite nanosheets in aqueous solution.
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8

Ramanath, G., J. D'Arcy-Gall, T. Maddanimath, A. V. Ellis, P. G. Ganesan, R. Goswami, A. Kumar et K. Vijayamohanan. « Templateless Room-Temperature Assembly of Nanowire Networks from Nanoparticles ». Langmuir 20, no 13 (juin 2004) : 5583–87. http://dx.doi.org/10.1021/la0497649.

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Huang, Ling-Yuang, Eric W. Bohannan, Chen-Jen Hung et Jay A. Switzer. « Room-Temperature Electrochemical Assembly of Copper/Cuprous Oxide Nanocomposites ». Israel Journal of Chemistry 37, no 2-3 (1997) : 297–301. http://dx.doi.org/10.1002/ijch.199700034.

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Li, Jiazhuo, Ying Wang, Xiaoming Jiang et Peng Wu. « An aqueous room-temperature phosphorescent probe for Gd3+ ». Chemical Communications 58, no 16 (2022) : 2686–89. http://dx.doi.org/10.1039/d1cc06229h.

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An aqueous room-temperature phosphorescent (RTP) probe for Gd3+ is reported here based on the adaptive assembly between Gd3+, AMP and fluorescein, and the resultant aqueous room-temperature phosphorescence.
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11

Li, Lei, Zhongyu Lian, Xi Yan, Meng Xia et Mingcui Zhang. « An evaporation induced self-assembly approach to prepare polymorphic carbon dot fluorescent nanoprobes for protein labelling ». Chemical Communications 54, no 93 (2018) : 13123–26. http://dx.doi.org/10.1039/c8cc05860a.

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Herein, we report a novel route to prepare polymorphic carbon dot fluorescent probes via the evaporation-induced self-assembly of glutaraldehyde and carbon dots, which first usually form carbon nanoclusters which then could self-assemble to form carbon nanocrystals, nanospheres or nanofibers in different ionic strength solutions at room temperature.
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12

Zhao, Wei, Xinyu Song, Zhilei Yin, Chunhua Fan, Guozhu Chen et Sixiu Sun. « Self-assembly of ZnO nanosheets into nanoflowers at room temperature ». Materials Research Bulletin 43, no 11 (novembre 2008) : 3171–76. http://dx.doi.org/10.1016/j.materresbull.2007.11.013.

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13

BISCHOFF, GERLINDE, ROBERT BISCHOFF et SIEGFRIED HOFFMANN. « Porphyrin self-assembly as template for RNA ? » Journal of Porphyrins and Phthalocyanines 05, no 09 (septembre 2001) : 691–701. http://dx.doi.org/10.1002/jpp.381.

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The self-assembly of chiral porphyrin molecules HpD (hematoporphyrin IX derivative) has been shown to form helical fibers in low salt aqueous conditions. The spectroscopic (UV and circular dichroism (CD)), thermodynamic (Tm, differential scanning calorimetry (DSC)) and microscopic (light and scanning force microscopy (SFM)) examinations of the HpD properties were performed individually and in the presence of nucleic acid double strands (15–60 °C, 0–50 mM NaCl ). The asymmetric HpD molecules themselves at room temperature show sharp positive or negative CD signals, which increase enormously with HpD concentration. The data show strong evidence for the external self-stacking interaction of HpD , pure and in the presence of polynucleotides. At low salt concentration (<40 mM NaCl , pH 7) the spectra change completely by increasing the temperature. At 35 to 40 °C RNA-similar spectra of the pure HpD self-assemblies (without nucleic acids) occur. At higher temperatures the aggregates become unstable and break off. At room temperature the helical structure of the fibers could be visualized by SFM investigations. Molecular modeling analysis offers dynamic arrangements of the self-assemblies from stacks to spiral-like superstructures with increasing temperature. Hydrogen bonding, electron transferring and electrostatic interactions determine the shape of the proposed highly flexible arrangements. Moreover, the interrelation between the HpD stacks and the helix of the polynucleotides was studied. The calculated low transition energies indicate the importance of these structures as a crossing link. All data are discussed in favor of a hypothetical evolutionary matrix role in porphyrin self-assembly for RNA.
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14

Tang, Jiang, Di Li, Chunyan Sun, Longzhen Zheng et Jinghong Li. « Temperature dependant self-assembly of surfactant Brij 76 in room temperature ionic liquid ». Colloids and Surfaces A : Physicochemical and Engineering Aspects 273, no 1-3 (février 2006) : 24–28. http://dx.doi.org/10.1016/j.colsurfa.2005.07.030.

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15

Dai, Ziwen, Hoi Man Leung, Qi Gao, Fei Wang, Sze Wing Wong, Ling Sum Liu, Yu Ju Au, King Wai Chiu Lai et Pik Kwan Lo. « Facile construction of a DNA tetrahedron in unconventional ladder-like arrangements at room temperature ». Nanoscale Advances 1, no 3 (2019) : 1240–48. http://dx.doi.org/10.1039/c8na00323h.

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16

Chen, Zehua, Ulrich Gengenbach, Xinnan Liu, Alexander Scholz, Lukas Zimmermann, Jasmin Aghassi-Hagmann et Liane Koker. « An Automated Room Temperature Flip-Chip Mounting Process for Hybrid Printed Electronics ». Micromachines 13, no 4 (8 avril 2022) : 583. http://dx.doi.org/10.3390/mi13040583.

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Printing technology and mounting technology enable the novel field of hybrid printed electronics. To establish a hybrid printed system, one challenge is that the applied mounting process meets the requirements of functional inks and substrates. One of the most common requirements is low process temperature. Many functional inks and substrates cannot withstand the high temperatures required by traditional mounting processes. In this work, a standardized interconnection and an automated bump-less flip-chip mounting process using a room temperature curing conductive adhesive are realised. With the proposed process, the conductive adhesive selected for the standardized interconnection can be dispensed uniformly, despite its increase of viscosity already during pot time. Electrical and mechanical performance of the interconnection are characterized by four terminal resistance measurement and shear test. The herein proposed automated process allows for fabrication of hybrid printed devices in larger batch sizes than manual assembly processes used beforehand and thus, more comprehensive evaluation of device parameters. This is successfully demonstrated in a first application, a novel hybrid printed security device. The room temperature mounting process eliminates any potentially damaging thermal influence on the performance of the printed circuits that might result from other assembly techniques like soldering.
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17

Tanisawa, Hidekazu, Kohei Hiyama, Takeshi Anzai, Hiroki Takahashi, Yoshinori Murakami, Shinji Sato, Kinuyo Watanabe, Fumiki Kato et Hiroshi Sato. « Reliability Assessment of Flip-Chip Assembly of Al Bumps ». Journal of Microelectronics and Electronic Packaging 12, no 2 (1 août 2015) : 92–97. http://dx.doi.org/10.4071/imaps.459.

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This article reports on a flip-chip bonding technology using an Al bump at high temperatures, such as for SiC semiconductors. In recent years, double-sided mounting structures have been proposed for purposes of miniaturization and low inductance. The surface-mounting method requires durability against high temperatures. We propose a new technique for the flip-chip bonding of an Al bump made from bonding wire. The recrystallization temperature of Al is under 250°C. As a result, there is an expectation of mitigating mechanical stress between the chip and the bonded substrate. We conducted a high-temperature aging test at 250°C for 3,000 h and a thermal shock test between −40°C and 250°C for 3,000 cycles. Results indicate that the shear strength of the Al bump meets the requirements specified in the IEC60749-19 guideline up to 2,000 cycles at room temperature.
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18

TANISAWA, Hidekazu, Kohei HIYAMA, Takeshi ANZAI, Hiroki TAKAHASHI, Yoshinori MURAKAMI, Shinji SATO, Kinuyo WATANABE, Fumiki KATO et Hiroshi SATO. « Reliability Assessment of Flip-chip Assembly of Al Bumps ». International Symposium on Microelectronics 2014, no 1 (1 octobre 2014) : 000301–6. http://dx.doi.org/10.4071/isom-tp46.

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This paper reports on a flip-chip bonding technology using an aluminum bump at high temperatures, such as for SiC semiconductors. In recent years, double-sided mounting structures have been proposed for the purposes of miniaturization and low inductance. The surface mounting method requires durability to withstand high temperatures. We propose a new technique for the flip-chip bonding of an Al bump made from bonding wire. The recrystallization temperature of aluminum is under 250 °C. As a result, there is an expectation of mitigating mechanical stress between the chip and bonded substrate. A high-temperature exposure test at 250 °C for 3000 hours and a thermal-cycle test between −40 and 250 °C for 3000 cycles have been executed. Results indicate that shear strength of the Al bump meets the requirements set forth in the IEC60749-19 guideline until 2000 cycles at room temperature.
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19

Tao, Yulun, Juchuan Li, Anjian Xie, Shikuo Li, Ping Chen, Liping Ni et Yuhua Shen. « Supramolecular self-assembly of three-dimensional polyaniline and polypyrrole crystals ». Chem. Commun. 50, no 84 (2014) : 12757–60. http://dx.doi.org/10.1039/c4cc05559d.

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Losensky, Luisa, Salvatore Chiantia, Gudrun Holland, Michael Laue, Anca Petran, Jürgen Liebscher et Anna Arbuzova. « Self-assembly of a cholesteryl-modified nucleoside into tubular structures from giant unilamellar vesicles ». RSC Advances 5, no 6 (2015) : 4502–10. http://dx.doi.org/10.1039/c4ra11289j.

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21

Samai, Suman, Christos Sapsanis, Sachin P. Patil, Alaa Ezzeddine, Basem A. Moosa, Hesham Omran, Abdul-Hamid Emwas, Khaled N. Salama et Niveen M. Khashab. « A light responsive two-component supramolecular hydrogel : a sensitive platform for the fabrication of humidity sensors ». Soft Matter 12, no 11 (2016) : 2842–45. http://dx.doi.org/10.1039/c6sm00272b.

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22

Nanthakumar, S., D. Rajenthirakumar et S. Avinashkumar. « Influence of temperature on deformation behavior of copper during microextrusion process ». Proceedings of the Institution of Mechanical Engineers, Part C : Journal of Mechanical Engineering Science 234, no 9 (8 janvier 2020) : 1797–808. http://dx.doi.org/10.1177/0954406219899114.

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Micro scale deformational behavior of metals is improved upon increasing the room temperature. Further, the drawbacks of micro forming caused by size effects are reduced significantly. In the current work, investigation on the material behavior of copper at elevated temperature ranging from room temperature to 200 ℃ is conducted. On the experimental part, a novel micro extrusion die set assembly has been developed along with temperature assistance, where the specimen is heated within the die assembly to study deformation behavior. When the forming temperature is raised, an enlargement of the forming limits is achieved along with a significant reduction in extrusion force. Further, the flow of material inside the die orifice was more uniform, and the micro pin showed a good replication of the die dimensions with homogeneous material deformation. During the increase of extrusion temperature and lubrication conditions (diamond-like carbon coating), the micro pin is more complete with higher dimensional accuracy and surface finish. The investigation on the influence of temperature showed that there is a reduction in microhardness of samples compared to the hardness of samples extruded at room temperature. However, there is a significant reduction of scattering due to homogenizing effect.
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Balogh, Bálint, Péter Gordon, Róbert Kovács, Csaba Nagynémedi, Péter János Szabó et Gábor Harsányi. « Failure Analysis Methods in Electronics Assembly Technology ». Materials Science Forum 589 (juin 2008) : 349–54. http://dx.doi.org/10.4028/www.scientific.net/msf.589.349.

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The aim of this paper is to describe a failure analysis methodology applicable to reveal the root causes of electronic assembly failures. The most relevant properties of the applied techniques, i.e. optical microscopy, X-ray microstructure analysis, SEM (scanning electron microscopy) combined with EDX (energy dispersive X-ray spectroscopy) analysis, are given. Three recent failure analysis case studies are also presented. In case of a burnt component the microwire and the leadframe formed AlCu intermetallic compound in the length of several millimeters. The low joint strength of gullwing leads were deduced back to paste printing and wetting problems. The fracture surface morphology of a joint broken on the field showed different structure from the ones broken at room temperature. It was revealed that SnPb solder fracture surface is different at room temperature and above 100°C.
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Liu, Zhenzhong, Gongjun Zhang, Wei Lu, Youju Huang, Jiawei Zhang et Tao Chen. « UV light-initiated RAFT polymerization induced self-assembly ». Polymer Chemistry 6, no 34 (2015) : 6129–32. http://dx.doi.org/10.1039/c5py00907c.

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Reversible addition–fragmentation chain transfer (RAFT) polymerization induced self-assembly (PISA) initiated by UV light is exploited as a new strategy to prepare polymeric nanomicelles at room temperature.
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Luo, Yang-Hui, Qing-Ling Liu, Li-Jing Yang, Yu Sun, Jin-Wen Wang, Chao-Qun You et Bai-Wang Sun. « Magnetic observation of above room-temperature spin transition in vesicular nano-spheres ». Journal of Materials Chemistry C 4, no 34 (2016) : 8061–69. http://dx.doi.org/10.1039/c6tc02796b.

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Suzuki, Akira, Munetaka Akita et Michito Yoshizawa. « Amphiphilic tribranched scaffolds with polyaromatic panels that wrap perylene stacks displaying unusual emissions ». Chemical Communications 52, no 65 (2016) : 10024–27. http://dx.doi.org/10.1039/c6cc04823d.

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A spherical assembly containing a perylene stack, prepared from a rigid tribranched scaffold and perylene, exhibits unusual Y-emission in water at room temperature. In contrast, an analogous assembly from a flexible scaffold and perylene shows E-emission under the same conditions.
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Odunze, Uchechukwu, Fionn O'Brien, Lisa Godfrey, Andreas Schätzlein et Ijeoma Uchegbu. « Unusual Enthalpy Driven Self Assembly at Room Temperature with Chitosan Amphiphiles ». Pharmaceutical Nanotechnology 7, no 1 (10 mai 2019) : 57–71. http://dx.doi.org/10.2174/2211738507666190311123401.

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Background: GCPQ (N-palmitoyl-N-monomethyl-N,N-dimethyl-N,N,N-trimethyl- 6-O-glycolchitosan) is a self-assembling polymer being investigated as a pharmaceutical nano-carrier. GCPQ nanoparticles shuttle drugs across biological barriers, improving drug performance. The exact chemistry of GCPQ is varied by the relative proportion of hydrophobic (N-palmitoyl) and hydrophilic (quaternary ammonium) groups and molecular weight. Objective: We hypothesised that the thermodynamics of self-assembly is controlled by the polymer molecular weight and hydrophobicity. Method: The thermodynamics of self-assembly was investigated using isothermal calorimetry. Results: GCPQs (Mw = 8-15 kDa) formed micellar aggregates at critical micellar concentrations of 1-2.4 µM at 25°C and micellisation was unusually enthalpy driven. There was a positive correlation between ΔHmic and mole% quaternary groups (Q): ΔHmic = 3.8 Q- 159 (r2 = 0.93) and a negative correlation between ΔHmic and molecular weight (Mw): ΔHmic = -13.5 Mw-26.3 (r2 = 0.99). Conclusion: These findings provide insights into the positive drivers of stable selfassemblies, namely hydrophobicity and molecular weight, as both hydrophobicity and molecular weight are associated with an increased enthalpy contribution to micellisation.
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Abdelghany, A. M., A. H. Oraby, Awatif A. Hindi, Doaa M. El-Nagar et Fathia S. Alhakami. « Green synthesis of mixed metallic nanoparticles using room temperature self-assembly ». JOURNAL OF ADVANCES IN PHYSICS 13, no 2 (16 mars 2017) : 4671–77. http://dx.doi.org/10.24297/jap.v13i2.5942.

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Bimetallic nanoparticles of silver (Ag) and gold (Au) were synthesized at room temperature using Curcumin. Reduction process of silver and gold ions with different molar ratios leads to production of different nanostructures including alloys and core-shells. Produced nanoparticles were characterized simultaneously with FTIR, UV/vis. spectroscopy, transmission electron microscopy (TEM), and Energy-dispersive X-ray (EDAX). UV/vis. optical absorption spectra of as synthesized nanoparticles reveals presence of surface palsmon resonance (SPR) of both silver at (425 nm) and gold at (540 nm) with small shift and broadness of gold band after mixing with resucing and capping agent in natural extract which suggest presence of bimetallic nano structure (Au/Ag). FTIR and EDAX data approve the presence of bimetallic nano structure combined with curcumin extract. TEM micrographs shows that silver and gold can be synthesized separately in the form of nano particles using curcumin extract. Synthesis of gold nano particles in presence of silver effectively enhance and control formation of bi-metallic structure.
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Lu, Lehui, Atsuko Kobayashi, Yasuo Kikkawa, Keiko Tawa et Yukihiro Ozaki. « Oriented Attachment-Based Assembly of Dendritic Silver Nanostructures at Room Temperature ». Journal of Physical Chemistry B 110, no 46 (novembre 2006) : 23234–41. http://dx.doi.org/10.1021/jp063978c.

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Flory, Justin D., Sandip Shinde, Su Lin, Yan Liu, Hao Yan, Giovanna Ghirlanda et Petra Fromme. « PNA-Peptide Assembly in a 3D DNA Nanocage at Room Temperature ». Journal of the American Chemical Society 135, no 18 (12 avril 2013) : 6985–93. http://dx.doi.org/10.1021/ja400762c.

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Sun, Xuping, Yonglan Luo et Junfeng Zhai. « Solution self-assembly-based route towards hexagonal microdisks at room temperature ». Inorganic Materials 46, no 5 (mai 2010) : 472–75. http://dx.doi.org/10.1134/s0020168510050067.

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Shimmin, Robert G., Robert Vajtai, Richard W. Siegel et Paul V. Braun. « Room-Temperature Assembly of Germanium Photonic Crystals through Colloidal Crystal Templating ». Chemistry of Materials 19, no 8 (avril 2007) : 2102–7. http://dx.doi.org/10.1021/cm062893l.

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JIA, YAOSHUN, QIANWANG CHEN et MINGZAI WU. « ROOM TEMPERATURE SELF-ASSEMBLY GROWTH OF COBALT NANOWIRES UNDER MAGNETIC FIELDS ». International Journal of Modern Physics B 19, no 15n17 (10 juillet 2005) : 2728–33. http://dx.doi.org/10.1142/s0217979205031602.

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Polycrystalline cobalt nanowires, with average diameter of 80 nm and length about 10 μm, were synthesized in the hydrazine hydrate solution at room temperature under magnetic fields. A seed-mediated growth approach was applied. Magnetic fields induced the growth of nanowires via aligned self-assembly of cobalt nanocrystallites. Magnetic measurements showed that the saturation magnetization (Ms) of the cobalt nanowires synthesized under magnetic field was five times larger than that of the samples prepared without magnetic fields; while the coercivity (Hc) of the sample prepared under magnetic fields was half of that of the sample synthesized without magnetic fields. The reasons for the magnetism changes were discussed.
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Simmons, T. J., N. Maeda, J. Miao, M. Bravo-Sanchez, J. S. Dordick et R. J. Linhardt. « Self-assembly of carbon nanotube films from room temperature ionic liquids ». Carbon 58 (juillet 2013) : 226–31. http://dx.doi.org/10.1016/j.carbon.2013.02.062.

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Yan, Shuang, Gongzheng Zhang, Feibo Li, Li Zhang, Sitong Wang, Huhu Zhao, Qi Ge et Huanjun Li. « Large-area superelastic graphene aerogels based on a room-temperature reduction self-assembly strategy for sensing and particulate matter (PM2.5 and PM10) capture ». Nanoscale 11, no 21 (2019) : 10372–80. http://dx.doi.org/10.1039/c9nr02071c.

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Chen, Qiang, Wojciech Zajaczkowski, Johannes Seibel, Steven De Feyter, Wojciech Pisula, Klaus Müllen et Akimitsu Narita. « Synthesis and helical supramolecular organization of discotic liquid crystalline dibenzo[hi,st]ovalene ». Journal of Materials Chemistry C 7, no 41 (2019) : 12898–906. http://dx.doi.org/10.1039/c9tc03350e.

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Baviloliaei, Mahdi Sadeghzadeh, et Lars Diekhöner. « Molecular self-assembly at nanometer scale modulated surfaces : trimesic acid on Ag(111), Cu(111) and Ag/Cu(111) ». Phys. Chem. Chem. Phys. 16, no 23 (2014) : 11265–69. http://dx.doi.org/10.1039/c4cp01429d.

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Osada, M., et T. Sasaki. « Room-Temperature Ceramic Nanocoating Using Nanosheet Deposition Technique ». Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2013, CICMT (1 septembre 2013) : 000014–18. http://dx.doi.org/10.4071/cicmt-ta14.

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We present a novel procedure for ceramic nanocoating using oxide nanosheet as a building block. A variety of oxide nanosheets (such as Ti1−δO2, MnO2 and perovsites) were synthesized by delaminating appropriate layered precursors into their molecular single sheets. These nanosheets are exceptionally rich in both structural diversity and electronic properties, with potential applications including conductors, semiconductors, insulators, and ferromagnets. Another attractive aspect is that nanosheets can be organized into various nanoarchitectures by applying solution-based synthetic techniques involving electrostatic layer-by-layer assembly and Langmuir-Blodgett deposition. It is even possible to tailor superlattice assemblies, incorporating into the nanosheet galleries with a wide range of materials such as organic molecules, polymers, and inorganic/metal nanoparticles. Sophisticated functionalities or paper-like devices can be designed through the selection of nanosheets and combining materials, and precise control over their arrangement at the molecular scale.
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Tan, Jianbo, Yuhao Bai, Xuechao Zhang et Li Zhang. « Room temperature synthesis of poly(poly(ethylene glycol) methyl ether methacrylate)-based diblock copolymer nano-objects via Photoinitiated Polymerization-Induced Self-Assembly (Photo-PISA) ». Polymer Chemistry 7, no 13 (2016) : 2372–80. http://dx.doi.org/10.1039/c6py00022c.

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40

Zhou, Xiang, Dongbao Yao, Wenqiang Hua, Ningdong Huang, Xiaowei Chen, Liangbin Li, Miao He et al. « Programming colloidal bonding using DNA strand-displacement circuitry ». Proceedings of the National Academy of Sciences 117, no 11 (4 mars 2020) : 5617–23. http://dx.doi.org/10.1073/pnas.1917941117.

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As a strategy for regulating entropy, thermal annealing is a commonly adopted approach for controlling dynamic pathways in colloid assembly. By coupling DNA strand-displacement circuits with DNA-functionalized colloid assembly, we developed an enthalpy-mediated strategy for achieving the same goal while working at a constant temperature. Using this tractable approach allows colloidal bonding to be programmed for synchronization with colloid assembly, thereby realizing the optimal programmability of DNA-functionalized colloids. We applied this strategy to conditionally activate colloid assembly and dynamically switch colloid identities by reconfiguring DNA molecular architectures, thereby achieving orderly structural transformations; leveraging the advantage of room-temperature assembly, we used this method to prepare a lattice of temperature-sensitive proteins and gold nanoparticles. This approach bridges two subfields: dynamic DNA nanotechnology and DNA-functionalized colloid programming.
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Teng, Yue, Le Xin Song, Wei Liu, Juan Xia, Li Zhao, Qing Shan Wang et Mao Mao Ruan. « Creation of hollow microtubular iron oxalate dihydrate induced by a metallo-supramolecular micelle based on the self-assembly of potassium ferrioxalate and sodium dodecyl sulphate ». RSC Advances 5, no 48 (2015) : 38006–10. http://dx.doi.org/10.1039/c5ra01703c.

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De Marchi, F., G. Galeotti, M. Simenas, E. E. Tornau, A. Pezzella, J. MacLeod, M. Ebrahimi et F. Rosei. « Room-temperature surface-assisted reactivity of a melanin precursor : silver metal–organic coordination versus covalent dimerization on gold ». Nanoscale 10, no 35 (2018) : 16721–29. http://dx.doi.org/10.1039/c8nr04002h.

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Talley, Michael R., Ryjul W. Stokes, Whitney K. Walker et David J. Michaelis. « Electrophilic activation of alkynes for enyne cycloisomerization reactions with in situ generated early/late heterobimetallic Pt–Ti catalysts ». Dalton Transactions 45, no 24 (2016) : 9770–73. http://dx.doi.org/10.1039/c6dt01783e.

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Wang, Xiqian, Chenxi Liu, Yuying Jiang, Chiming Wang, Tianyu Wang, Ming Bai et Jianzhuang Jiang. « Room temperature chiral reorganization of interfacial assembly of achiral double-decker phthalocyanine ». Physical Chemistry Chemical Physics 20, no 10 (2018) : 7223–29. http://dx.doi.org/10.1039/c7cp08647d.

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45

Phuong, Luong Thi Kim, et An Manh Nguyen. « Epitaxial Growth of High Curie-Temperature Ge1-xMnx quantum dots on Si(001) by auto-assembly ». Communications in Physics 24, no 1 (23 mars 2014) : 69. http://dx.doi.org/10.15625/0868-3166/24/1/3477.

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We report on successful growth of epitaxial and high Curie-temperature Ge1-xMnx quantum dots on Si (001) substrates using the auto-assembled approach. By reducing the growth temperature down to 400 °C, we show that the Mn diffusion into the Si substrate can be neglected. No indication of secondary phases or clusters was observed. Ge1-xMnx quantum dots were found to be epitaxial and perfectly coherent to the Si substrate. We also observe ferromagnetic ordering in quantum dots at a temperature higher 320 K. It is believed that single-crystalline quantum dots exhibiting a high Curie temperature are potential candidates for spin injection at temperatures higher than room temperature.
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Wang, Kai, Dong Zhi Zhang, Jun Tong et Bo Kai Xia. « Ethanol Gas Sensor Based on Self-Assembled Multi-Walled Carbon Nanotube Film ». Applied Mechanics and Materials 241-244 (décembre 2012) : 881–84. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.881.

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A multi-walled carbon nanotube (MWNT) film-based sensor was fabricated using layer-by-layer self-assembly method, and its ethanol gas-sensing properties with varying gas concentration are characterized at room temperature. The experiment results shown that the layer-by-layer self-assembled MWNT film sensor exhibit a fast response and linear resistance change when exposed to ethanol gas, indicated a prospective application for ethanol gas detection with high performance and low-cost.
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Fan, Junpeng, Miguel Guerrero, Adrián Carretero-Genevrier, Maria Dolors Baró, Santiago Suriñach, Eva Pellicer et Jordi Sort. « Evaporation-induced self-assembly synthesis of Ni-doped mesoporous SnO2 thin films with tunable room temperature magnetic properties ». Journal of Materials Chemistry C 5, no 22 (2017) : 5517–27. http://dx.doi.org/10.1039/c7tc01128h.

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48

Luo, Yanqing, Tao Tan, Sen Wang, Ran Pang, Lihong Jiang, Da Li, Jing Feng, Hongjie Zhang, Su Zhang et Chengyu Li. « Multivariant ligands stabilize anionic solvent-oriented α-CsPbX3 nanocrystals at room temperature ». Nanoscale 13, no 9 (2021) : 4899–910. http://dx.doi.org/10.1039/d0nr08697e.

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A self-assembly method is proposed for cubic phase CsPbX3 nanocrystals under ambient conditions. Long-term stability and high quantum efficiency are maintained via ligand evolution from paired X type ligands to hybrid L–X type ligands.
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Cai, Zhen-Feng, Wei-Long Dong, Ting Chen, Hui-Juan Yan, Dong Wang, Wei Xu et Li-Jun Wan. « Directed assembly of fullerene on modified Au(111) electrodes ». Chemical Communications 54, no 58 (2018) : 8052–55. http://dx.doi.org/10.1039/c8cc04284e.

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Here we show a conceptual approach to realize the scanning tunneling microscopy based induced-assembly of fullerene (C60) molecules on top of a buffer organic adlayer at room temperature in a solution environment.
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Kojtari, Arben, Patrick J. Carroll et Hai-Feng Ji. « Metal organic framework (MOF) micro/nanopillars ». CrystEngComm 16, no 14 (2014) : 2885–88. http://dx.doi.org/10.1039/c4ce00172a.

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