Article
Chemistry, Multidisciplinary
Shih-Hua Tan, Sibidou Yougbare, Hsuan-Ya Tao, Che-Chang Chang, Tsung-Rong Kuo
Summary: Plasmonic gold nanoisland film (AuNIF), fabricated using a seed-mediated growth approach, demonstrated intricate structure with maximum plasmonic absorption at 624 nm. The AuNIF showed increased capture efficiency of E. coli compared to glass substrate, and was utilized as a SERS substrate for enhancing Raman signal. Additionally, AuNIF exhibited superior photothermal effect and efficiency in photothermal killing of E. coli, making it a promising platform for bacterial theranostics combining SERS detection and photothermal therapy.
Article
Physics, Applied
Zsuzsanna Papa, Peter Sandor, Bela Lovasz, Judit Budai, Jozsef Kasza, Zsuzsanna Marton, Peter Jojart, Imre Seres, Zsolt Bengery, Csaba Nemeth, Peter Dombi, Peter Racz
Summary: We experimentally demonstrate that nanoscale control of plasmonic field enhancement can be achieved by changing the polarization state of light. This is due to the mode-mixing property of circularly polarized illumination, which simultaneously excites multiple plasmon modes of the nanostructures. Trajectory calculations of the photoemitted electrons prove that the kinetic energy scaling law remains the same regardless of the polarization state.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Qin Zhang, Xiaoyao Wang, Huiying Wu, Jinjin Zhang, Xingyue Lin, Jiaoyang Sa, Hao Li, Chao Zhou, Weihai Ni
Summary: This paper demonstrates the individual switching of chiral plasmonic metamolecules assembled with DNA origami through microscopic observation. The plasmonic metamolecules can maintain their activities upon certain local stimuli and display opposite spectral signals in circular differential scattering, representing successful enantiomeric switching of chirality.
Article
Multidisciplinary Sciences
Chi Zhang, Dongyao Li, Guangdi Zhang, Xujie Wang, Li Mao, Quan Gan, Tao Ding, Hongxing Xu
Summary: This study demonstrates a method to reversibly modulate the nanogap plasmons between classical and quantum tunneling regimes using supramolecular interactions. The detailed plasmon shift near the quantum tunneling limit is revealed, and it is shown that plasmonic hot electron tunneling can further blue shift the quantum plasmons.
Article
Chemistry, Multidisciplinary
Zhijian Mai, Ye Yuan, Jung-Shen B. Tai, Bohdan Senyuk, Bing Liu, Hao Li, Yao Wang, Guofu Zhou, Ivan I. Smalyukh
Summary: Dispersing pentagonal gold bipyramids in nematic liquid crystals allows for narrow and controlled polarization-dependent surface plasmon resonance spectra, with easy electric switching. The bipyramids orient with their C-5 rotation symmetry axes along the nematic director, showing spatially homogeneous density in aligned samples. Topological solitons enable spatial reorganization of the nanoparticles based on elastic free energy density within their micrometer-scale structures.
Article
Chemistry, Multidisciplinary
Sujin Jiracheewanun, Michael B. Cortie, Dakrong Pissuwan
Summary: In this study, the generation and transfer of heat when laser irradiation is applied to water containing gold nanorods coated with different polyelectrolytes were investigated. Experimental measurements were compared to a finite element model. It was observed that high fluences are required to produce biologically relevant temperature changes due to significant lateral heat transfer from the well sides. A 650 mW continuous-wave laser with a wavelength similar to the gold nanorods' longitudinal plasmon resonance peak can deliver heat with an overall efficiency of up to 3%, which is double the efficiency without the nanorods. An increase in temperature of up to 15 degrees C, suitable for inducing cell death by hyperthermia, can be achieved. The nature of the polymer coating on the gold nanorods has only a small effect.
Article
Chemistry, Physical
Prabhat Mishra, Anil K. Debnath, Sharmistha Dutta Choudhury
Summary: In this study, thin films of an emerging plasmonic material, TiN, were prepared and characterized. The effectiveness of TiN for fluorescence coupling in metal-dielectric structures was examined. The results showed that TiN substrates have comparable performance to conventional Au substrates for surface plasmon-coupled emission and waveguide-coupled emission. Additionally, the TiN thin films are reusable.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Fengzhu Li, Tsz Wing Lo, Xiang Deng, Siqi Li, Yulong Fan, Francis R. Lin, Yuanhang Cheng, Zonglong Zhu, Dangyuan Lei, Alex K. -Y. Jen
Summary: The efficiency and stability of perovskite solar cells (PVSCs) are significantly affected by the residual strain induced during the growth of the perovskite film. In this study, SiO2-coated gold nanorods (GNR@SiO2) were introduced into the perovskite film to release the strain using the plasmonic local heating effect. The resulting inverted PVSCs with GNR@SiO2 exhibited a champion power conversion efficiency (PCE) over 23% and improved stability, retaining 84% of its initial PCE after aging for 2800 hours under continuous illumination at 65 +/- 5 degrees C.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Chang Hyeon Song, Maulida Zakia, Geon Seok Lee, Seong Il Yoo
Summary: The study explored the application of plasmonic superstructures in converting solar energy into other forms of energy, achieving more efficient photothermal conversion through the scattering-mediated absorption process in porous polymer membranes, and accelerating the kinetics of chemical reactions.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Dongdong Lin, Zhenyu Qian, Massimo Bagnani, Miguel A. Hernandez-Rodriguez, Julio Corredoira-Vazquez, Guanghong Wei, Luis D. Carlos, Raffaele Mezzenga
Summary: Insoluble amyloid fibrils, associated with neurodegenerative diseases, have potential applications in bio-nanomaterials. Gold nanorods were used to study the plasmonic heating and dissociation of amyloid-beta fibrils. The results show that the nanorods can break down the amyloid-beta fibrils by triggering ultrahigh localized surface plasmon resonance heating.
Article
Chemistry, Multidisciplinary
Feifei Zhang, Jerome Plain, Davy Gerard, Jerome Martin
Summary: This study numerically investigates the influence of surface roughness on the plasmonic properties of aluminum nanodisks, revealing different effects on the out-of-plane quadrupolar mode and in-plane dipolar mode. The results show that increasing surface roughness significantly dampens the quadrupolar mode while broadening and redshifting the dipolar resonance. These effects are attributed to the decoherence and dissipation of electronic oscillations due to surface roughness, and are experimentally confirmed by characterizing the optical properties of periodic aluminum nanodisk arrays.
Article
Chemistry, Physical
Tulio L. de Pedrosa, Georges Boudebs, Renato E. de Araujo
Summary: This work reveals the rules of using figures of merit to select efficient plasmonic nanoheaters. The size dependence of plasmonic nanoparticle optical heating was disclosed, and the optimal gold nanospheres diameter for efficient colloidal laser heating was identified as 50 nm. Moreover, it was found that the optimal particle size for single-particle optical heating applications is different from the optimal size for collective heating of nanoparticles.
Article
Materials Science, Multidisciplinary
Rakesh Kumar Saini, Ashok Kumar Sharma, Ajay Agarwal, Rahul Prajesh
Summary: This study presents a complete methodology for simulating a SERS substrate based on nanoparticles and validates the simulation results with experiments. The simulation approach helps in designing and developing a SERS substrate with maximum electromagnetic enhancement at a specific wavelength, and provides insights into the effect of different parameters on the enhancement. Simulating various possibilities before fabrication saves time and money.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Ayana Mizuno, Yosei Shibata, Hideo Fujikake, Atsushi Ono
Summary: We experimentally demonstrated electrical plasmonic color modulation by combining a nematic-phase liquid crystal (LC) layer and a silver nanocube (AgNC) monolayer. The color of transmitted light through the LC/AgNC device can be modulated by applying different voltages, which is of great significance for microdevices and display devices.
Article
Chemistry, Physical
Romain Rouxel, Michele Diego, Paolo Maioli, Noelle Lascoux, Fabien Vialla, Francesco Rossella, Francesco Banfi, Fabrice Vallee, Natalia Del Fatti, Aurelien Crut
Summary: When a metal nanoparticle absorbs light, it undergoes a series of relaxation processes that lead to transient modifications in its optical response. By using time-resolved spectroscopy experiments, it was shown that the transient optical response could be attributed to internal thermalization processes within the nanoparticle, and the effects of electron and ionic lattice heating were quantitatively studied. The study demonstrated the possibility of selectively probing electronic or lattice dynamics by choosing specific probe wavelengths, and showed that the timedependent spectral shape of transient extinction cross-section changes was successively dominated by electron and lattice heating effects.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Biophysics
Hengji Cong, Fong-Chuen Loo, Jiajie Chen, Yuye Wang, Siu-Kai Kong, Ho-Pui Ho
BIOSENSORS & BIOELECTRONICS
(2019)
Article
Chemistry, Applied
Jacky Fong-Chuen Loo, Grace Wing-Chiu But, Ho-Chin Kwok, Pui-Man Lau, Siu-Kai Kong, Ho-Pui Ho, Pang-Chui Shaw
Review
Chemistry, Analytical
Dongping Wang, Jacky Fong Chuen Loo, Jiajie Chen, Yeung Yam, Shih-Chi Chen, Hao He, Siu Kai Kong, Ho Pui Ho
Article
Biochemical Research Methods
Jianing Zhang, Yue Ma, Kuan Hu, Yuan Feng, Si Chen, Xiaoyang Yang, Jacky Fong-Chuen Loo, Han Zhang, Feng Yin, Zigang Li
BIOCONJUGATE CHEMISTRY
(2019)
Article
Infectious Diseases
Lang Li, Jian-an He, Wei Wang, Yun Xia, Li Song, Ze-han Chen, Hang-zhi Zuo, Xuan-Ping Tan, Aaron Ho-Pui Ho, Siu-Kai Kong, Jacky Fong-Chuen Loo, Hua-wen Li, Gu Dayong
INTERNATIONAL JOURNAL OF INFECTIOUS DISEASES
(2019)
Review
Materials Science, Multidisciplinary
Jiajie Chen, Jacky Fong-Chuen Loo, Dongping Wang, Yu Zhang, Siu-Kai Kong, Ho-Pui Ho
ADVANCED OPTICAL MATERIALS
(2020)
Article
Medicine, Research & Experimental
Wei Wang, Rui-ling Dong, Dayong Gu, Jian-an He, Pin Yi, Siu-Kai Kong, Ho-Pui Ho, Jacky Fong-Chuen Loo, Wen Wang, Qian Wang
ADVANCES IN MEDICAL SCIENCES
(2020)
Review
Chemistry, Inorganic & Nuclear
Jacky Fong-Chuen Loo, Yi-Hsin Chien, Feng Yin, Siu-Kai Kong, Ho-Pui Ho, Ken-Tye Yong
COORDINATION CHEMISTRY REVIEWS
(2019)
Article
Chemistry, Analytical
Dongping Wang, Jacky Fong Chuen Loo, Wei Lin, Qiang Geng, Erika Kit Shan Ngan, Siu Kai Kong, Yeung Yam, Shih-Chi Chen, Ho Pui Ho
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Multidisciplinary
Joonas Ryssy, Arttu J. Lehtonen, Jacky Loo, Minh-Kha Nguyen, Jani Seitsonen, Yike Huang, Badri Narayanan Narasimhan, Juho Pokki, Anton Kuzyk, Sesha Manuguri
Summary: This work showcases a light-mediated approach to tune the orientational features of gold nanorods in DNA-engineered hydrogel materials. The strategy relies on the use of visible-light-induced photothermal effects to cause deformation of the hydrogel matrix, resulting in temperature-controlled polarization-dependent optical responses. This approach can open novel avenues to create dynamic light-responsive materials with reconfigurable plasmonic responses.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yike Huang, Minh-Kha Nguyen, Vu Hoang Nguyen, Jacky Loo, Arttu J. Lehtonen, Anton Kuzyk
Summary: This study presents a strategy to characterize aptamers using DNA origami-based chiral plasmonic assemblies as reporters and establishing a competitive hybridization reaction-based thermodynamic model. The characterization scheme demonstrated reliable and reproducible characterization of various aptamers, facilitating the development of aptamer-based applications.
Review
Biochemical Research Methods
Sesha Manuguri, Minh-Kha Nguyen, Jacky Loo, Ashwin Karthick Natarajan, Anton Kuzyk
Summary: The DNA origami technique discovered in 2006 has revolutionized bottom-up nanofabrication, enabling fabrication of nanostructures of almost any shape and serving as templates for various nanoscale components. However, its applicability is often restricted by limited stability in specific conditions.
BIOCONJUGATE CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Minghui Ji, Yun Xia, Jacky Fong-Chuen Loo, Lang Li, Ho-Pui Ho, Jianan He, Dayong Gu
Article
Music
Fung Chiat Loo, Fung Ying Loo, Yan Piaw Chua
Review
Materials Science, Biomaterials
Jacky Fong-Chuen Loo, Ho Pui Ho, Siu Kai Kong, Tza-Huei Wang, Yi-Ping Ho
ADVANCED BIOSYSTEMS
(2019)