Small Structures最新文献_第9页

On the Photothermal Response of DNA–Au Core/Shell Nanotoroids as Potential Agents for Photothermal Therapies 论 DNA-Au 核/壳纳米多面体作为光热疗法潜在药物的光热反应

Small Structures Pub Date : 2024-06-17 DOI: 10.1002/sstr.202300523

Javier González-Colsa, Anton Kuzyk, Pablo Albella

{"title":"On the Photothermal Response of DNA–Au Core/Shell Nanotoroids as Potential Agents for Photothermal Therapies","authors":"Javier González-Colsa, Anton Kuzyk, Pablo Albella","doi":"10.1002/sstr.202300523","DOIUrl":"https://doi.org/10.1002/sstr.202300523","url":null,"abstract":"Plasmonic nanoparticles play a pivotal role in various research areas due to their exceptional optical and thermo-optical properties, like high spectral tunability and efficient light-to-heat conversion. Gold, with its biocompatibility, low cytotoxicity, and tunable resonances , makes gold nanoparticles ideal for photothermal therapies. Geometries, including spheres, core–shells, rods, disks, stars, nanocages, and nanotoroids, are extensively studied, with the gold nanodoughnut emerging as one of the most promising ones due to its ability to produce high temperatures and rotational stability. Nevertheless, the fabrication of metallic toroidal shapes remains a challenge. Recent advances in DNA-based nanotechnology, especially DNA-origami techniques, provide feasible route for the fabrication of this geometry through metallization reactions or attachment of metal nanoparticles. However, particles manufactured using this method possess a DNA core that influences their thermoplasmonic performance. In this work, a theoretical investigation is conducted on the thermoplasmonic response of DNA-origami-based core/shell toroids (CSTs) for photothermal applications. Key parameters that optimize the CST thermoplasmonic response are identified, and compared with their solid counterparts and discrete metallic coatings. Additionally, the CSTs tolerance to random rotations is assessed, providing insights into their behavior in fluidic environments and implications for its practical consideration.","PeriodicalId":21841,"journal":{"name":"Small Structures","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enoki‐Inspired Microfibers and Extracellular Matrix Enhance Biaxially Interlocking Interfaces 金针菇启发的微纤维和细胞外基质增强了双轴互锁界面

Small Structures Pub Date : 2024-06-13 DOI: 10.1002/sstr.202400193

Huy Quang Tran, Navatha Shreem Polavaram, Zishuo Yan, Donghee Lee, Yizhu Xiao, SM Shatil Shahriar, Zheng Yan, Jingwei Xie

{"title":"Enoki‐Inspired Microfibers and Extracellular Matrix Enhance Biaxially Interlocking Interfaces","authors":"Huy Quang Tran, Navatha Shreem Polavaram, Zishuo Yan, Donghee Lee, Yizhu Xiao, SM Shatil Shahriar, Zheng Yan, Jingwei Xie","doi":"10.1002/sstr.202400193","DOIUrl":"https://doi.org/10.1002/sstr.202400193","url":null,"abstract":"Taking inspiration from diverse interlocking and adhesion structures found in nature, a biaxially interlocking interface is developed in this work. This interface is formed by interconnecting two electrostatically flocked substrates and its mechanical strength is enhanced through the incorporation of enoki‐mushroom‐shaped microfibers and deposited extracellular matrix (ECM). Tips of flocked straight fibers can be transformed into mushroom shapes through thermal treatment. The tensile strength of interlocked scaffolds with mushroom‐shaped tips drastically increases when compared to scaffolds made of straight fibers, which is not reported previously. More cells proliferate within interlocked scaffolds with mushroom‐shaped tips than scaffolds with straight fibers. Additionally, the mechanical strength (e.g., compressive, tensile, and shear) of cell‐seeded interlocked scaffolds increases proportionally to the amount of ECM deposited by dermal fibroblasts. The biaxially interlocking interface developed in this study holds promise for applications in engineering interfacial tissues, modeling tissue interfaces, investigating tissue–tissue interactions, and facilitating tissue bridging or binding.","PeriodicalId":21841,"journal":{"name":"Small Structures","volume":"50 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141345828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical Laser Tweezer‐Directed Single Particle Solvatochromism of Conjugated Polydiacetylene 光学激光镊子引导的共轭聚二乙烯单粒子溶色作用

Small Structures Pub Date : 2024-06-13 DOI: 10.1002/sstr.202400171

Seung Soo Shin, Dong Yun Kim, Kwangmin Bae, Hyemin Kang, So Jung Ha, Aditya Patil, Jong-Man Kim, Bum Jun Park

引用次数: 0

Intercalation‐Conversion Hybrid Cathode Enabled by MXene‐Driven TiO2/TiS2 Heterostructure for High‐Energy‐Density Li–S Battery 利用 MXene 驱动的 TiO2/TiS2 异质结构实现互钙-转换混合负极，用于高能量密度锂离子电池

Small Structures Pub Date : 2024-06-13 DOI: 10.1002/sstr.202400196

V. Nguyen, Yusra Qureshi, H. Shim, J. Yuk, Jae-Hyun Kim, Seung‐Mo Lee

{"title":"Intercalation‐Conversion Hybrid Cathode Enabled by MXene‐Driven TiO2/TiS2 Heterostructure for High‐Energy‐Density Li–S Battery","authors":"V. Nguyen, Yusra Qureshi, H. Shim, J. Yuk, Jae-Hyun Kim, Seung‐Mo Lee","doi":"10.1002/sstr.202400196","DOIUrl":"https://doi.org/10.1002/sstr.202400196","url":null,"abstract":"A dense electrode with high sulfur loading is a straightforward approach to increasing the energy density of lithium–sulfur battery (LSB), but the development of dense electrodes suffers from both fabrication challenges and electron/ion transport limitations. In addition, the shuttle effect of soluble lithium polysulfides and sluggish reaction kinetics cause declined utilization efficiency of the active material and poor cycling stability. Herein, a dense intercalation‐conversion hybrid cathode is prepared using MXene‐driven TiS2 nano‐needles decorated with TiO2 nanoparticles. The TiO2/TiS2 heterostructure simultaneously possessing a high adsorption capability (TiO2) and bidirectional electrocatalytic effect (TiS2) is observed to effectively suppress lithium polysulfide shuttling and facilitate the sulfur conversion reactions. Furthermore, it is believed that TiS2 provides additional capacity from the intercalation reaction and functions as a multichannel network to feed both Li+/e− to the active sulfur material due to its high electronic and ionic conductivities. Thanks to these synergistic effects, the LSB assembled using the TiO2/TiS2 heterostructure exhibits high gravimetric and volumetric energy densities of 331 Wh kg−1 and 730 Wh L−1, respectively, as well as superior cyclability at a high sulfur mass loading of 7.5 mg cm−2 and lean electrolyte of 2.5 μL mg−1.","PeriodicalId":21841,"journal":{"name":"Small Structures","volume":"98 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141348004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hybrid Piezoresistive 2D MoS2/PEGDA/PANI Covalent Hydrogels for the Sensing of Low‐to‐Medium Pressure 用于传感中低压的混合压阻性二维 MoS2/PEGDA/PANI 共价水凝胶

Small Structures Pub Date : 2024-06-13 DOI: 10.1002/sstr.202400131

Sara Domenici, Sara Micheli, M. Crisci, Marcus Rohnke, Hannes Hergert, Marco Allione, Mengjiao Wang, Bernd Smarlsy, Peter J. Klar, Francesco Lamberti, Elisa Cimetta, L. Ceseracciu, Teresa Gatti

{"title":"Hybrid Piezoresistive 2D MoS2/PEGDA/PANI Covalent Hydrogels for the Sensing of Low‐to‐Medium Pressure","authors":"Sara Domenici, Sara Micheli, M. Crisci, Marcus Rohnke, Hannes Hergert, Marco Allione, Mengjiao Wang, Bernd Smarlsy, Peter J. Klar, Francesco Lamberti, Elisa Cimetta, L. Ceseracciu, Teresa Gatti","doi":"10.1002/sstr.202400131","DOIUrl":"https://doi.org/10.1002/sstr.202400131","url":null,"abstract":"Wearable technologies are attracting increasing attention in the materials science field, prompting a quest for active components with beneficial functional attributes whilst ensuring human and environmental safety. Hydrogels are highly biocompatible platforms with interesting mechanical properties, which can be exploited for the construction of strain sensors. In order to improve the directionality of their strain response and combine it with electrical properties to fabricate piezoresistive devices, it is possible to incorporate various types of nanofillers within the polymeric network of the hydrogels. 2D materials are ideal nanofillers thanks to their intrinsic two‐dimensional anisotropy and unique electronic properties. Herein, the covalent functionalization of 2D 1T‐MoS2 is exploited to build robust hybrid cross‐linked networks with a polyethylene glycol diacrylate gel (PEGDA). The conductivity of this nanocomposite is also further improved by inducing the interfacial polymerization of aniline. The resulting free‐standing samples demonstrate a linear and highly reversible piezoresistive response in a pressure range compatible with that of peripheral blood, while also featuring good compatibility with human skin cells, thereby making them interesting options for incorporation into wearable strain sensors.","PeriodicalId":21841,"journal":{"name":"Small Structures","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141348063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reducing Ohmic Resistances in Membrane Capacitive Deionization Using Micropatterned Ion‐Exchange Membranes, Ionomer Infiltrated Electrodes, and Ionomer‐Coated Nylon Meshes 使用微图案离子交换膜、离子聚合物浸润电极和离子聚合物涂层尼龙网降低膜电容式去离子过程中的欧姆电阻

Small Structures Pub Date : 2024-06-10 DOI: 10.1002/sstr.202400090

Mahmudul Hasan, Bharat Shrimant, Colton Burke Waters, C. Gorski, C. Arges

{"title":"Reducing Ohmic Resistances in Membrane Capacitive Deionization Using Micropatterned Ion‐Exchange Membranes, Ionomer Infiltrated Electrodes, and Ionomer‐Coated Nylon Meshes","authors":"Mahmudul Hasan, Bharat Shrimant, Colton Burke Waters, C. Gorski, C. Arges","doi":"10.1002/sstr.202400090","DOIUrl":"https://doi.org/10.1002/sstr.202400090","url":null,"abstract":"\u0000Membrane capacitive deionization (MCDI) is an emerging water desalination platform that is compact, electrified, and does not require high‐pressure piping. Herein, highly conductive poly(phenylene alkylene) ion‐exchange membranes (IEMs) are micropatterned with different surface geometries for MCDI. The micropatterned membranes increase the interfacial area with the liquid stream leading to a 700 mV reduction in cell voltage when operating at constant current (2 mA cm−2; 2000 ppm NaCl feed) while improving the energy normalized adsorbed salt (ENAS) value by 1.4 times. Combining the micropatterned poly(phenylene alkylene) IEMs with poly(phenylene alkylene) ionomer‐filled electrodes reduces the cell voltage by 1000 mV and improves the ENAS values by 2.3 times relative to the base case. This reduction in cell voltage allows for higher current density operation (i.e., 3–4 mA cm−2) . The reduction in cell voltage is ascribed to the ameliorating ohmic resistances related to ion transport at the membrane‐process stream interface and in the carbon cloth electrode. Finally, porous ionic conductors are implemented into the spacer channel with flat and micropatterned IEM configurations and ionomer infiltrated electrodes. For the configuration with flat IEMs, the porous ionic conductor improves ENAS values across the current density regime (2–4 mA cm−2), while for micropatterned IEMs it gets improved only at 4 mA cm−2.","PeriodicalId":21841,"journal":{"name":"Small Structures","volume":" 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141363687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Perspective on Crystal Structures, Synthetic Methods, and New Directions in Thermoelectric Materials 透视热电材料的晶体结构、合成方法和新方向

Small Structures Pub Date : 2024-06-10 DOI: 10.1002/sstr.202400136

M. González-Barrios, Marina Tabuyo-Martínez, David Ávila‐Brande, J. Prado‐Gonjal

引用次数: 0

Enabling High Capacity and Stable Sodium Capture in Simulated Saltwater by Highly Crystalline Prussian Blue Analogues Cathode 利用高结晶普鲁士蓝类似物阴极在模拟盐水中实现高容量和稳定的钠捕获

Small Structures Pub Date : 2024-06-10 DOI: 10.1002/sstr.202400163

Shiyong Wang, Yuhao Lei, Changping Li, Lin Zhao, Shuwen Du, Gang Wang, Jieshan Qiu

{"title":"Enabling High Capacity and Stable Sodium Capture in Simulated Saltwater by Highly Crystalline Prussian Blue Analogues Cathode","authors":"Shiyong Wang, Yuhao Lei, Changping Li, Lin Zhao, Shuwen Du, Gang Wang, Jieshan Qiu","doi":"10.1002/sstr.202400163","DOIUrl":"https://doi.org/10.1002/sstr.202400163","url":null,"abstract":"\u0000Prussian blue analogues (PBAs) are considered as promising cathode materials for capacitive deionization (CDI) technology due to their 3D open‐frame structure and tunable redox active sites. However, the inevitably high content of [Fe(CN)6] vacancies in the crystal structure results in a low salt adsorption capacity (SAC) and poor recycling performance. Herein, a high‐salt nano‐reaction system is established by mechanochemical ball milling, enabling the preparation of a variety of highly crystallized PBAs (metal hexacyanoferrate, MHCF‐B‐170, M = Ni, Co, or Cu) with low vacancies (0.05–0.06 per formula unit). The reduction of vacancies in the PBAs lattice not only strengthens the conductivity and promotes the rapid transfer of electrons, but also reduces the migration energy barrier and accelerates the fast and reversible diffusion of Na+ ions. The structural characterization method and theoretical simulation demonstrates the excellent reversibility and crystal structure stability of MHCF‐B‐170 during the CDI process. Impressively, the NiHCF‐B‐170 exhibits excellent CDI performance, characterized by an exceptionally high SAC of up to 101.4 mg g−1 at 1.2 V, and demonstrates remarkable cycle stability with no significant degradation observed even after 100 cycles. This PBAs with low Fe(CN)6 vacancies are expected to be a competitive candidate material for CDI electrodes.","PeriodicalId":21841,"journal":{"name":"Small Structures","volume":" December","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141364387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Controlled Self-Assembly of Vesicles by Electrospray Deposition 通过电喷雾沉积实现囊泡的可控自组装

Small Structures Pub Date : 2024-06-09 DOI: 10.1002/sstr.202470025

Toshihisa Osaki, Koki Kamiya, Ryuji Kawano, Kaori Kuribayashi-Shigetomi, Shoji Takeuchi

引用次数: 0

Integrated Copper Nanomaterials-Decorated Microsphere Photothermal Platform for Comprehensive Melanoma Treatment 用于黑色素瘤综合治疗的纳米铜材料装饰微球光热综合平台

Small Structures Pub Date : 2024-06-09 DOI: 10.1002/sstr.202470027

Xinyi Zhang, Mengya Zhang, Hengqing Cui, Tinglin Zhang, Zhuanzhuan Zhang, Jingzhu Li, Jingsheng Zhou, Xianghe Jiang, Chenchen Liu, Jie Gao

引用次数: 0