Article
Chemistry, Physical
Eli Sutter, Bo Zhang, Peter Sutter
Summary: Directed self-assembly using pH as a stimulus can modify the interparticle interaction between Au nanorods conjugated with single-stranded DNA, allowing for on-demand self-assembly. The study demonstrates the versatile building blocks of ssDNA-conjugated anisotropic nanostructures with stimuli-programmable interactions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Cheongwon Bae, Jaedeok Lee, Lehan Yao, Suhyeon Park, Yeonju Lee, Jieun Lee, Qian Chen, Juyeong Kim
Summary: Core-shell hybrid nanomaterials exhibit unique properties and functions that cannot be achieved by individual components. Nanoscale confinement within porous inorganic shells plays a crucial role in the chemical transformation of core nanoparticles. In this study, the chemical etching and regrowth of a gold nanorod core enclosed by a zeolitic imidazolate framework (ZIF) was examined, revealing a template-effective morphological transformation with the formation of a raspberry-like branched nanostructure. The regrowth process is attributed to void spaces at the interfaces between the etched core and ZIF shell, intercrystalline gaps in multi-domain ZIF shells, and local structural deformation caused by acidic reaction conditions.
Article
Chemistry, Multidisciplinary
Mamoru Tamura, Takuya Iida, Kenji Setoura
Summary: This study demonstrates through numerical simulation that spatial shaping of nanoscale temperature fields can be achieved by plasmonic heating of a single TiN nanostructure. The low thermal conductivity of TiN compared to metals like Au allows for clear transcription of heat power density distributions into temperature fields.
Article
Multidisciplinary Sciences
Ran Jing, Yinming Shao, Zaiyao Fei, Chiu Fan Bowen Lo, Rocco A. Vitalone, Francesco L. Ruta, John Staunton, William J-C Zheng, Alexander S. Mcleod, Zhiyuan Sun, Bor-Yuan Jiang, Xinzhong Chen, Michael M. Fogler, Andrew J. Millis, Mengkun Liu, David H. Cobden, Xiaodong Xu, D. N. Basov
Summary: Tungsten ditelluride (WTe2) exhibits different THz-range electromagnetic responses in mono-, bi-, and trilayer forms, showing varying insulating and metallic behaviors. The study supports the semimetal nature of bilayer WTe2 and clear metallic behavior in trilayer WTe2.
NATURE COMMUNICATIONS
(2021)
Article
Engineering, Mechanical
Jinxuan Zhu, Xia Li, Qinghua Zhou, Ramin Aghababaei
Summary: The study on the effect of crystal orientation and scratching direction on the wear resistance of single crystalline copper using nano-scratch crystal plasticity finite element simulations and experiments reveals significant anisotropy in scratch response. Quantifying the wear volume with Archard's wear law shows orientation and scratching direction dependent wear coefficient, while using scratching hardness in the law can obtain a unique wear coefficient for crystalline materials.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Chemistry, Physical
Yuanfang Sun, Dongliang Song, Xin Zhang, Qinglan Zhang, Baoyun Li, Kuangcai Chen, Ning Fang
Summary: Single particle orientation and rotational tracking (SPORT) is a highly effective upgrade to conventional single particle tracking (SPT) techniques, providing valuable information about nanoscale rotational dynamics in chemical and biological systems. This study used gold nanorods (AuNRs) on synthetic lipid bilayers as a model system to investigate the conditions for accurate extraction of rotational mode and speed using correlation and autocorrelation analyses. The results of this systematic study on data treatment will contribute to future interpretations and designs in SPORT.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Retraction
Chemistry, Multidisciplinary
Geun Wan Kim, Ji Won Ha
Summary: The retraction notice is for the article titled "Single gold nanostars with multiple branches as multispectral orientation probes in single-particle rotational tracking" by Geun Wan Kim et al., published in Chem. Commun., 2021. The article discusses the application of single gold nanostars with multiple branches in tracking the rotation of individual particles.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Xuxing Lu, Deep Punj, Michel Orrit
Summary: In this study, we demonstrated the single-molecule fluorescence enhancement of two-photon excitation by single end-to-end self-assembled gold nanorod dimers. By using biotinylated streptavidin as the molecular linker, we connected two gold nanorods together in a suitable gap size for the access of fresh dyes. Simulations showed that the plasmonic hot spots achieved more than 7 orders of magnitude enhancement for two-photon-excited fluorescence. With such high enhancements, we successfully detected the two-photon-excited fluorescence of a common organic dye (ATTO 610) at the single-molecule, single-nanoparticle level.
Article
Chemistry, Physical
Michael A. Beuwer, Peter Zijlstra
Summary: The study shows that single self-assembled dimers of gold nanorods are effective refractometric sensors, with differences in sensitivity between bonding and antibonding modes. The trade-off between resonance linewidth and refractive index sensitivity is crucial in determining the figure of merit for such sensors, making nanorod dimers exciting candidates for multicolor and multiplexed sensing.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Ling Tong, Jun Yuan, Zhiwei Zhang, Jau Tang, Zhiwei Wang
Summary: This study presents a centred dark-field imaging approach based on ultrafast transmission electron microscopy to directly observe the picosecond-scale evolution of intrananoparticle vibration with high spatial resolution and detection sensitivity.
NATURE NANOTECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Levente Juhasz, Roberto D. Ortuso, Kaori Sugihara
Summary: The study utilized quantitative friction force microscopy to measure the response of polydiacetylene to lateral forces, revealing the necessity of applying shear forces to characterize it at the nanoscale. The experiment confirmed the erroneous nature of the hypothesis regarding the higher force sensitivity at the edges and discovered a correlation between mechanochromism and thermochromism.
Article
Chemistry, Multidisciplinary
Yu Zhang, Mengke Su, Xingru Fang, Wenwen Huang, Hao Jiang, Qi Li, Nisar Hussain, Mao Ye, Honglin Liu, Weihong Tan
Summary: In this study, a novel nanometal surface energy transfer (NSET) nanoruler with a single-nucleobase resolution was proposed for in situ identification of aptamer-binding targets on living cell membrane surfaces. The nanoruler consisted of FAM-labeled aptamers and single-sized gold nanoparticle (GNP) antibody conjugates as a donor and an acceptor, respectively. Experimental evidence demonstrated the single nucleobase resolution of the nanoruler by molecular size, orientation, quenching nature, and other dye-GNP pairs. The nanoruler showed high reproducibility and precision for measuring molecule distance on living cell membranes at the nanometer level due to the use of only single-sized antibody-capped GNPs. The proposed strategy represents a solid step towards the wider application of optical-based rulers for observing molecular structural configuration and dynamic transitions on the membrane surface of living cells.
Article
Nanoscience & Nanotechnology
Hyunsoo Jang, Dongjo Yoon, Yoonkey Nam
Summary: This study introduces a method to inhibit neural activities using plasmonic gold nanoparticles and polydopamine through photothermal effects. The results show that immobilizing gold nanorods on the polydopamine film allows for more efficient photothermal effects and neural activity inhibition.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Analytical
Dylan T. Jantz, Ryan J. Balla, Siao-Han Huang, Niraja Kurapati, Shigeru Amemiya, Kevin C. Leonard
Summary: The study developed an intelligent nanoscale SECM mode that can simultaneously obtain separate reactivity and topography images of non-flat substrates with reactive and inert regions.
ANALYTICAL CHEMISTRY
(2021)
Article
Polymer Science
Noah H. Cho, Qingteng Zhang, Eric M. Dufresne, Suresh Narayanan, Jeffrey J. Richards
Summary: In this work, we used X-ray photon correlation spectroscopy to investigate the segmental dynamics of inverse wormlike micelle solutions. The diffusive scaling of the dynamics and the temperature-dependent diffusion coefficient were observed, which were associated with the thermal interactions of the slow segmental dynamics near entanglement points. Our study found no microstructural evidence of branch formation in the slow mode, but instead observed that the dynamics became more homogeneous and prominent as the temperature decreased and water content increased.
Article
Nanoscience & Nanotechnology
Tae Soup Shim, Zaki G. Estephan, Zhaoxia Qian, Jacob H. Prosser, Su Yeon Lee, David M. Chenoweth, Daeyeon Lee, So-Jung Park, John C. Crocker
NATURE NANOTECHNOLOGY
(2017)
Article
Chemistry, Multidisciplinary
Yifan Wang, James T. McGinley, John C. Crocker
Article
Physics, Multidisciplinary
Ian C. Jenkins, John C. Crocker, Talid Sinno
PHYSICAL REVIEW LETTERS
(2017)
Article
Chemistry, Physical
Young Ki Lee, Christopher Porter, Scott L. Diamond, John C. Crocker, Talid Sinno
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2018)
Meeting Abstract
Biophysics
Yu Shi, Daniel H. Reich, Christopher L. Porter, John C. Crocker
BIOPHYSICAL JOURNAL
(2019)
Article
Multidisciplinary Sciences
Yu Shi, Christopher L. Porter, John C. Crocker, Daniel H. Reich
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2019)
Article
Chemistry, Physical
Mehdi Molaei, John C. Crocker
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)
Article
Physics, Applied
Katie A. Rose, Mehdi Molaei, Michael J. Boyle, Daeyeon Lee, John C. Crocker, Russell J. Composto
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Multidisciplinary Sciences
Young Ki Lee, Xiaoguai Li, Paris Perdikaris, John C. Crocker, Celia Reina, Talid Sinno
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2020)
Article
Biophysics
Christopher L. Porter, Scott L. Diamond, Talid Sinno, John C. Crocker
Summary: This study presents an experimental model for simulating cell rolling using polymer microspheres with known adhesive properties. The simulation framework effectively captures the rolling velocity and trajectory variations, confirming its ability to model complex rolling cell systems.
BIOPHYSICAL JOURNAL
(2021)
Article
Physics, Multidisciplinary
Mehdi Molaei, Nicholas G. Chisholm, Jiayi Deng, John C. Crocker, Kathleen J. Stebe
Summary: Understanding the flow dynamics created by particle motion at interfaces is crucial for studying hydrodynamic interactions and colloidal self organization. Correlated displacement velocimetry has been developed to measure flow fields around interfacially trapped particles, providing key insights into the interface's mechanical response. The flow structure also contains information about interfacial properties and hydrodynamic coupling with the bulk fluid, enabling predictions of the interface's response to applied complex forces.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Mehdi Molaei, Sreeja Kutti Kandy, Zachary T. Graber, Tobias Baumgart, Ravi Radhakrishnan, John C. Crocker
Summary: The measurements of gold nanorods can provide insights into the bending undulations and mechanical properties of lipid bilayer membranes. This research is important for understanding the structure and function of cells.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Cell Biology
Yu Shi, Shankar Sivarajan, Katherine M. Xiang, Geran M. Kostecki, Leslie Tung, John C. Crocker, Daniel H. Reich
Summary: This study reveals the presence of sudden dynamic reconfigurations and displacements in the actomyosin cortex of cells, termed cytoquakes, across different cell types and mechanical environments. These fluctuations may indicate a marginally stable mechanical state of the cortex, which could contribute to cell mechanical properties, active behavior, and mechanosensing.
INTEGRATIVE BIOLOGY
(2021)
Review
Chemistry, Physical
Christopher L. Porter, John C. Crocker
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
(2017)