Article
Physics, Multidisciplinary
Zhikun Xie, Jielin Zhou, Yuanhai Cai, Jipei Chen, Wei Zhang, Jun Peng, Zhifeng Chen
Summary: The laser-induced magnetization dynamics in a perpendicularly exchange-coupled TbFeCo/GdFeCo bilayer film were studied using pump-probe magneto-optical Kerr spectroscopy. An ultrafast modulation effect on local magnetization orientation was observed in the GdFeCo layer, triggered by the femtosecond laser pulse and driven by the effective exchange field within a timescale of hundreds of picoseconds. These processes demonstrate field- and fluence-dependent dynamical behaviors and propose an atomistic Heisenberg model for studying the laser-induced magnetization dynamics through micromagnetic simulation.
FRONTIERS IN PHYSICS
(2021)
Article
Physics, Applied
Jia-Li You, Shuo-Qi Lin, Jie Zhang, She-Bao Lin, Li-Li Fu, Rui-Lin Zheng, Liao-Lin Zhang, Chun-Xiao Liu
Summary: Ion implantation is a competitive technique for waveguide preparation, offering advantages such as reliability, simplicity, and flexibility. In this study, a planar waveguide was fabricated on the surface of fused silica glass using 400-keV helium ion implantation. Analysis of the formation mechanism and performance of the waveguide was conducted, highlighting the importance of investigating fused silica glass optical waveguides for the development of passive devices in optical communications.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2021)
Article
Chemistry, Physical
Chenlin Wang, MinJu Ying, Jie Lian, MingYang Wei, Qingfen Jiang, Zhen Xu, Yu Zhang, Yueming Wang
Summary: In this work, ion implantation of Mn and As ions into ZnO films significantly altered their optical properties, leading to changes in refractive index and extinction coefficient. The presence of Mn ions also introduced a halfmetallic property to the ZnO films, resulting in gentler variations in optical characteristics. These findings suggest new possibilities for the design and optimization of optoelectronic devices utilizing ZnO thin films with semi-metallic properties.
APPLIED SURFACE SCIENCE
(2022)
Article
Physics, Applied
Pardeep Kumar, Thakshila M. Herath, Vadym Apalkov
Summary: Theoretical study reveals that the interaction between bilayer graphene and circularly polarized ultrafast optical pulses can control valley polarization by adjusting the angle of incidence, amplitude, and angle of in-plane polarization. This provides a platform for designing ultrafast all-optical valleytronic information processing.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Tongtong Kang, Zongwei Ma, Jun Qin, Zheng Peng, Weihao Yang, Taixing Huang, Shilin Xian, Shuang Xia, Wei Yan, Yucong Yang, Zhigao Sheng, Jian Shen, Chaoyang Li, Longjiang Deng, Lei Bi
Summary: This paper reports on active metasurfaces based on Au/VO2 that demonstrate high transparency, high power efficiency, ultrafast switching, and large-scale fabrication capability. Fabricated using polystyrene sphere colloidal crystal self-assembly, these centimeter-scale Au/VO2 metasurfaces exhibit excellent optical modulation performance in static heating experiments and ultrafast pump-probe experiments. The alignment of surface plasmon resonance wavelength with the pump wavelength enables swift switching effects, showcasing a practical approach to fabricating large-scale and power-efficient active metasurfaces for ultrafast optical modulation.
Article
Nanoscience & Nanotechnology
Tongtong Kang, Zongwei Ma, Jun Qin, Zheng Peng, Weihao Yang, Taixing Huang, Shilin Xian, Shuang Xia, Wei Yan, Yucong Yang, Zhigao Sheng, Jian Shen, Chaoyang Li, Longjiang Deng, Lei Bi
Summary: This study reports on active metasurfaces based on Au/VO2, which exhibit high performance in optical modulation. These metasurfaces, fabricated by self-assembly, demonstrate high transparency, high power efficiency, ultrafast switching speed, and large-scale manufacturing capability, making them suitable for ultrafast optical modulation applications.
Article
Chemistry, Physical
Jilin Tang, Yuechen Wang, Yuwei Ma, Xiaoyin Gao, Xin Gao, Ning Li, Yani Wang, Shishu Zhang, Liming Zheng, Bing Deng, Rui Yan, Yisen Cao, Ronghua Zhang, Lianming Tong, Jin Zhang, Peng Gao, Zhongfan Liu, Xiaoding Wei, Hongtao Liu, Hailin Peng
Summary: In this study, ultrafast growth of wafer-scale fold-free bilayer graphene was achieved by chemical vapor deposition. By adjusting the thickness and strain regulation of the single-crystal CuNi(111)/sapphire alloy, the formation of graphene folds during cooling was suppressed, and a 2-inch fold-free bilayer graphene wafer was fully covered as fast as 30 s. The ultraflat bilayer graphene exhibited wafer-scale uniformity in electrical performance and enhanced mechanical property comparable to the exfoliated ones, providing a promising route for large-scale production of bilayer graphene and enabling its various applications.
Review
Biotechnology & Applied Microbiology
Siavash Shariatzadeh, Negin Moghimi, Farima Khalafi, Sepehr Shafiee, Mohsen Mehrabi, Saba Ilkhani, Foad Tosan, Pooria Nakhaei, Ali Alizadeh, Rajender S. Varma, Mohammad Taheri
Summary: Cancer, a life-threatening disease with high costs and side effects in traditional treatments, has led researchers to explore the use of metal nanoparticles for more effective and targeted therapy. Metal nanoparticles, which can easily penetrate cells and deliver drugs, show promise in photodynamic therapy and sonodynamic therapy for cancer treatment.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Engineering, Multidisciplinary
LeYi Zhao, Hai Wang, TianYu Liu, FangFei Li, Qiang Zhou, HaiYu Wang
Summary: Researchers reported a room temperature photoluminescence (PL) valley polarization of up to 3.73% in an optical bilayer WS2 formed by transferring monolayer WS2 onto a flat Ag film. Furthermore, in transient absorption (TA) measurements, a remarkably long valley depolarization lifetime was found. Thus, researchers demonstrated that the valley properties of such optical bilayer WS2 resemble actual bilayer WS2, and this robust valley polarization can be attributed to the phonon depletion effect and the blocked interlayer hopping processes. These peculiar valley features in optical bilayer WS2 provide a particularly simple method to enhance valley control at room temperature.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Physics, Condensed Matter
Pardeep Kumar, Thakshila M. Herath, Vadym Apalkov
Summary: In this study, we theoretically investigate the interaction between an ultrastrong femtosecond-long linearly polarized optical pulse and AB-stacked bilayer graphene. The angle of incidence of the pulse can manipulate the generation of current and its direction, and the symmetry of BLG affects these processes.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Optics
Weibao He, Mingyu Tong, Zhongjie Xu, Yuze Hu, Xiang'ai Cheng, Tian Jiang
Summary: This study demonstrates the construction of a terahertz metasurface supported by the EIT effect through inverse design for the first time, showing the potential applications of inverse design in terahertz device design.
PHOTONICS RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Qing Hou, Ajuan Hu, Hongbin Ni, Zongqiang Sun, Jianing Duan, Xiaoming Xu, Jingmin Fan, Ruming Yuan, Mingsen Zheng, Quanfeng Dong
Summary: The design of fluorine-nitrogen co-implanted carbon tubes (FNCT) is crucial for achieving both high power and high energy electrochemical energy storage. The heteroatom engineering and the fluorine-nitrogen synergistic effect create abundant active sites and expanded interlayer space, resulting in an optimal balance between battery-type and capacitor-type storage in FNCT. The implanted fluorine heteroatoms not only increase interlayer spacing, but also transform the nitrogen configuration, enhancing the activity of the carbon matrix. FNCT exhibits exceptional electrochemical performance, with fast lithium-ion storage capability and a high energy density (119.4 Wh kg (-1) at 107.5 kW kg(-1) power density).
Article
Physics, Multidisciplinary
Guiqi Wang, Boyu Ji, Xiaowei Song, Peng Lang, Jingquan Lin
Summary: Active control of the photoemission yield for various plasmonic hot spots was achieved by tuning the polarization direction of the two orthogonally polarized laser pulses. The modulation depth of the photoemission yield was described by a model as a function of the difference of the photoemission response to the two incident laser pulses. The proportion of photoemission yields was found to be mainly determined by the rearrangement of the quantum pathway proportion.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Yiling Lian, Lan Jiang, Jingya Sun, Wenpan Tao, Zhicheng Chen, Gen Lin, Ziqian Ning, Manlou Ye
Summary: The significance of ultrafast laser-induced energy and mass transfer at interfaces in nanoscience and technology is growing. In this study, time-resolved reflective pump-probe imaging and molecular-dynamics coupled two-temperature model (MD-TTM) simulations were used to investigate the ultrafast dynamics and ablation mechanism of Au/Ti bilayer systems. The results reveal that the Au film reduces energy deposition in the underlying Ti layer, leading to reduced melting and evaporation rate. The study also elucidates the mechanical responses and ablation mechanism within the bilayer system.
Article
Optics
Huijun Wang, Yuhao Lei, Lei Wang, Masaaki Sakakura, Yanhao Yu, Gholamreza Shayeganrad, Peter G. Kazansky
Summary: A high capacity and ultra-long lifetime 5D optical data storage using femtosecond-laser-induced nanopore structures in silica glass has been realized. This technology allows recording and retrieving thousands of layers of multibit digital data with >99% transmission and minimal readout error.
LASER & PHOTONICS REVIEWS
(2022)
Article
Materials Science, Ceramics
Jose-Miguel Zarate-Reyes, Erick Flores-Romero, Juan-Carlos Cheang-Wong
Summary: A new approach was proposed to obtain monodisperse submicrometer-sized colloidal silica particles with a narrow size distribution through a modified Stober synthesis method. The initial temperature of the reagent solutions was found to be a key parameter affecting particle size, shape, and monodispersity. This experimental approach also enables size tunability for the synthesis of large spherical silica particles, and in combination with spin-coating deposition, favors the formation of ordered arrays of monodisperse silica particles on silicon substrates.
INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE
(2022)
Article
Chemistry, Physical
Eric Abraham Hurtado-Aviles, Maria Vila, Juan Jose Vilatela, Hilario Martines-Arano, Jhovani Bornacelli, Jose Antonio Garcia-Merino, Felipe Cervantes-Sodi, Carlos Torres-Torres
Summary: This study reports a significant influence of a magnetic field on the third-order nonlinear optical properties exhibited by aggregated networks of aligned carbon nanotubes, showing that the presence of a magnetic field can modify the optical transmittance in the sample and potentially generate structured light. Numerical simulations were conducted to analyze the magnetic field phenomena and electric field oscillations in the studied sample. Applications of this system to modulate structured light are immediate possibilities.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Ramiro Medina-Orta, Gladis J. Labrada-Delgado, Hector G. Silva-Pereyra, Emma Maria Ortega, Valentin Perez-Herranz, Maria Guadalupe Sanchez-Loredo
Summary: Gold nanoparticles were synthesized and incorporated onto a porous Ni electrode to enhance its catalytic performance in the hydrogen evolution reaction, showing improvement mainly due to the intrinsic catalytic activity of the Au nanoparticles. The reaction mechanism was estimated to follow the Volmer-Heyrovsky mechanism based on Tafel representations and EIS results.
Article
Biochemistry & Molecular Biology
Lilian Calderon-Garciduenas, Angel Augusto Perez-Calatayud, Angelica Gonzalez-Maciel, Rafael Reynoso-Robles, Hector G. Silva-Pereyra, Andrea Ramos-Morales, Ricardo Torres-Jardon, Candelario de Jesus Soberanes-Cerino, Raul Carrillo-Esper, Jesus Carlos Briones-Garduno, Yazmin del Socorro Conde-Gutierrez
Summary: The presence of anthropogenic ultrafine particulate matter and nanoparticles in human placentas and brains from polluted Mexican cities has been analyzed. The study found nanoparticles in various cells including erythrocytes, syncytiotrophoblasts, Hofbauer cells, fetal endothelium, neurons, and glia. Nanoscale metals and elements were also detected in placental and fetal brain tissues. These findings have important implications for understanding the potential health effects of prenatal and postnatal exposure to nanoparticles, particularly on neurological development.
Article
Nanoscience & Nanotechnology
Ana Aguilera-Juarez, Luis Hernandez-Adame, Miguel Angel Ruiz-Gomez, Elizabeth Monreal-Escalante, Martha Reyes-Becerril, Sergio Rosales-Mendoza, Hector Gabriel Silva Pereyra, Carlos Angulo
Summary: This report describes the development of a novel conjugate consisting of gold nanoparticles and an immunogenic peptide. The peptide showed the ability to reduce gold ions and form complexes, and the resulting LptD@AuNP system exhibited high colloidal stability in a wide pH range. Cytotoxicity assays demonstrated the safety of the system for mouse leukocytes, and immunized mice showed specific antibody production.
Article
Optics
Cesar Carrillo-Delgado, Monica Araceli Vidales-Hurtado, Hilario Martines-Arano, David Torres-Torres, Gina Gallegos-Garcia, Claudia Lizbeth Martinez-Gonzalez, Carlos Torres-Torres
Summary: This article analyzes how an electric field can induce a band gap shift in NiO films to enhance their third-order optical nonlinearities. It suggests that an electrochromic effect is responsible for changes in absorbance and modification in off-resonance nonlinear refractive index. The optical Kerr effect is identified as the main physical mechanism in a nanosecond two-wave mixing configuration at 532 nm wavelength. The absence of multi-photon absorption is confirmed by the constant trace of high-irradiance optical transmittance in single-beam mode. The study of nonlinear optical signals allows the proposal of an exclusive disjunctive logic gate assisted by an electrochromic effect in an optical Kerr gate. The influence of a switchable probe beam transmittance and electrical signals on asymmetric encryption by the XOR system is also studied. Immediate applications for developing multifunctional quantum systems driven by dynamic parameters in electrochromic and nonlinear optical materials are emphasized.
Article
Environmental Sciences
Lilian Calderon-Garciduenas, Angelica Gonzalez-Maciel, Rafael Reynoso-Robles, Hector G. Silva-Pereyra, Ricardo Torres-Jardon, Rafael Brito-Aguilar, Alberto Ayala, Elijah W. Stommel, Ricardo Delgado-Chavez
Summary: The study identified various abnormal proteins and metal solid nanoparticles in the brains of children and young adults exposed to Metropolitan Mexico City pollution, suggesting potential neurodevelopmental harm. The presence of nanoparticles in noradrenergic and dopaminergic nuclei and the cerebellum may be related to neurodegenerative diseases, highlighting the importance of regulating and monitoring NP emissions sources.
Article
Thermodynamics
Hilario Martines-Arano, Samara Palacios-Barreto, Juan Castillo-Cruz, Jesus Alberto Meda-Campana, Blanca Estela Garcia-Perez, Carlos Torres-Torres
Summary: This study experimentally controlled the modification in thermal transfer mechanisms induced by light in human lung epithelial cancer cells using chaotic attractors dependent on optical transmittance. The evolution of a chaotic modulation driven by optical signals was studied in cells integrated in monolayer form, and photodamage in the samples was identified by measuring transmitted light modulated by the Chen equations. Comparative experiments revealed the crucial role of multi-photonic processes in the resulting photothermal phenomena.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Chemistry, Physical
Jhovani Bornacelli, Fernando Arturo Araiza-Sixtos, Carlos Torres-Torres, Marco Antonio Hernandez-Acosta, Alicia Oliver, Raul Rangel-Rojo
Summary: This study investigated the modification of optical properties in a silica matrix by co-implanting silicon nanoparticles and nitrogen ions. The experimental results showed that nitrogen ions could effectively change the optical bandgap and photoluminescent intensity of the nanomaterials. Additionally, the co-implanted sample with nitrogen exhibited a three-fold enhancement of the nonlinear Kerr response.
Review
Chemistry, Analytical
Jose Alberto Arano-Martinez, Claudia Lizbeth Martinez-Gonzalez, Ma Isabel Salazar, Carlos Torres-Torres
Summary: The ability to interpret information through automatic sensors is crucial in modern technology. Biosensors have great potential in evaluating biological information and detecting danger, especially in the context of the ongoing SARS-CoV-2 pandemic. This article provides a comprehensive overview of optical biosensors, emphasizing the role of nonlinear optics and machine learning in improving their performance. The use of multiphoton interactions and nonlinear optical effects opens up new possibilities for expanding the applications of optical biosensors. Machine learning methods can also be utilized to identify complex agents and patterns in detecting dynamic objects in the human body.
Editorial Material
Chemistry, Analytical
Carlos Torres-Torres, Blanca Estela Garcia-Perez
Article
Chemistry, Physical
Geselle Garcia-Beltran, Cecilia Mercado-Zuniga, Christopher Rene Torres-SanMiguel, Gina Gallegos-Garcia, Carlos Torres-Torres
Summary: An all-optical XOR logic gate is presented in this study, utilizing laser-induced polarization rotation of optical waves. Optical activity and third-order optical nonlinearities were investigated in silver nanoparticles functionalized carbon nanotubes in an ethanol suspension. The dynamics of the hybrid nanostructures in the fluid were analyzed as a probabilistic profile in concentration function. The work highlights the potential use of hybrid nanomaterials in optical and quantum encryption applications simultaneously, assisted by optical activity and nonlinear optics.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Correction
Optics
V. Rodriguez-Iglesias, O. Pena-Rodriguez, H. G. Silva-Pereyra, L. Rodriguez-Fernandez, J. C. Cheang-Wong, A. Crespo-Sosa, J. A. Reyes-Esqueda, A. Oliver
Summary: We provide a corrigendum for our Letter [Opt. Lett. 35, 703 (2010)]. We mistakenly included a TEM micrograph of a different, yet similar, sample in Fig. 2(a) of the original Letter. This corrigendum replaces Fig. 2(a) with the correct version. However, since the main results are based on optical absorption measurements and modeling using the T-matrix method, this correction does not impact the original Letter's results and conclusions.
Article
Engineering, Electrical & Electronic
Cesar Carrillo-Delgado, Jose Alberto Arano-Martinez, Monica Araceli Vidales-Hurtado, David Torres-Torres, Claudia Lizbeth Martinez-Gonzalez, Carlos Torres-Torres
Summary: This report analyzes the asymmetry effects of an electric field on nonlinear optical signals in NiO thin solid films. The samples were prepared using a spray pyrolysis method and had a thickness of approximately 110 nm. The change in nonlinear refractive index was evaluated by nanosecond pulses at 532 nm using the z-scan technique. Nonlinear optical absorption was confirmed to be absent before ablation occurs in the nonlinear media. Numerical simulations were conducted to analyze non-reciprocal energy transfer and the optical Kerr effect under an applied voltage. Potential applications include controlling nonlinear waveguiding structures and optical systems with multidirectional functions.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Multidisciplinary Sciences
Samuel Morales-Bonilla, Isaac I. Mota-Diaz, Janna Douda, Ariel Fuerte-Hernandez, Juan Pablo Campos-Lopez, Carlos Torres-Torres
Summary: This study analyzes the optical effects of blood plasma under healthy/unhealthy conditions and the evolution of nanovehicles composed of nanodiamonds (NDs) encapsulating liposomes (L) in these biofluids. Optical ablation of liposome clusters was achieved and controlled using a standard two-wave mixing laser light method. The release of NDs was facilitated by thermal damage during the sedimentation process of the nanovehicles interacting with the laser beams barrier. The findings of this research include the threshold temperature for the release of NDs from liposomes and the assessment of the release based on the numerical magnitude of Quantum Yield.