Article
Materials Science, Multidisciplinary
Pau Molet, Nicolas Passarelli, Luis A. Perez, Leonardo Scarabelli, Agustin Mihi
Summary: Ordered arrays of metal nanoparticles can generate surface lattice resonances with higher quality factors, showing great potential for engineering light-matter interactions. The internal architecture of gold-nanoparticle meta-molecules influences the optical response of plasmonic supercrystals.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Amar Hajj-Ahmad, Amy Kyungwon Han, Michael A. Lin, Gary H. Glover, Mark R. Cutkosky
Summary: This work introduces a new variation on electrostatic clutches that utilize gecko-inspired adhesives instead of friction for braking force. The clutch requires only a brief pulse of voltage to switch states and does not require power or normal pressure to remain engaged or disengaged. It finds applications in safety-critical situations, such as a fail-safe brake for a robotic needle-driving axis and maintaining a static grasping force in a force-controlled robotic gripper. The fabricated prototypes of the gecko-inspired clutch are thin, flexible, and exhibit a controllable adhesive braking force.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Mechanics
M. Grae Worster, S. S. L. Peppin, J. S. Wettlaufer
Summary: The paper discusses the solidification process of idealised two-component mixtures, including a solvent or suspending fluid and dissolved solute molecules or suspended colloidal particles, each modeled as hard spheres. By analyzing solid-liquid phase diagrams and various thermodynamic concepts, the study examines the impact of different particle sizes on the solidification process and investigates the phenomenon of constitutional supercooling in colloidal suspensions.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Chemistry, Multidisciplinary
Jose Martin-Roca, Francisco Ortega, Chantal Valeriani, Ramon Gonzalez Rubio, Fernando Martinez-Pedrero
Summary: The self-assembly capacity of magnetic colloids is utilized to construct pathways for the transport of magnetic micro/nanoparticles under low Reynolds number conditions. This approach has wide-ranging applications in drug delivery and microcargo guidance in biological environments and microfluidic platforms.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Denver P. Linklater, Soichiro Saita, Takaaki Murata, Takashi Yanagishita, Chaitali Dekiwadia, Russell J. Crawford, Hideki Masuda, Haruhiko Kusaka, Elena P. Ivanova
Summary: This study presents a comprehensive analysis of the antibacterial and antibiofouling properties of sub-100-nanometer scale nanopatterned polymers fabricated using scalable industrial processes. The results show that acrylic and nylon polymers are the most suitable for producing anti-infective nanostructured materials. Specifically, acrylic nanostructured films with nanopillars of 60 nm height and 30 nm pitch exhibit superior antimicrobial and antibiofouling behavior towards both Gram-negative and Gram-positive bacteria.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Multidisciplinary
Shingo Terashima, Akira Ochi, Junya Sato, Masato Suzuki, Tomokazu Takahashi, Seiji Aoyagi
Summary: Researchers developed a new method using UV nanoimprinting to fabricate fine hairs imitating those on a gecko's foot, including a three-stage hair structure and high precision 3D stereo-lithography.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2021)
Article
Mechanics
Julia Gerber, Thomas M. Schutzius, Dimos Poulikakos
Summary: The study shows that the topography of deposit on soft materials can be controlled by changing the environmental humidity, affecting the coffee ring effect. By regulating the evaporative flux, bifurcation of lines can be triggered on soft substrates.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Mechanics
Richard Cobos, Aditya S. Khair
Summary: In this paper, a spectral element algorithm is developed to compute the electrophoretic velocity of a spherical, rigid, dielectric particle over a wide range of dimensionless surface charge density sigma. The results show that for moderately charged particles, the electrophoretic velocity is linear in beta when beta << 1, and its dependence on the delta = 1/(kappa * a*) agrees with Henry's formula. For highly charged particles in the thin-Debye-layer limit, the computations are in good agreement with recent experimental and asymptotic results.
JOURNAL OF FLUID MECHANICS
(2023)
Article
Chemistry, Multidisciplinary
Johannes Menath, Reza Mohammadi, Jens Christian Grauer, Claudius Deters, Maike Boehm, Benno Liebchen, Liesbeth M. C. Janssen, Hartmut Loewen, Nicolas Vogel
Summary: 2D colloidal crystallization is a simple strategy for producing defined nanostructure arrays over large areas. The study introduces a loudspeaker setup for the acoustic crystallization of 2D colloidal crystals at liquid interfaces, which increases the average grain size significantly. The process is optimized using frequency and amplitude of sound waves, and computer simulations show the mechanisms behind defect removal. The experimentally simple process provides access to highly defined nanostructure arrays for various research communities.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Scott M. Fenton, Poornima Padmanabhan, Brian K. Ryu, Tuan T. D. Nguyen, Roseanna N. Zia, Matthew E. Helgeson
Summary: Colloidal gelation is a method to form processable soft solids using various functional materials. The microscopic processes during gelation that differentiate different types of gels are not well understood. This study presents a method that predicts the minimal conditions for gel solidification and connects the quench path to the emergence of gelled states. The results show that all gels incorporate elements of percolation, phase separation, and glassy arrest, and the slope of the gelation boundary corresponds to the dominant gelation mechanism.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Review
Electrochemistry
Arfat Pradana, Ni Luh Wulan Septiani, Hermawan Kresno Dipojono, Suyatman, Brian Yuliarto
Summary: NPLA, as a structure based on nanomaterials for biosensors, has high sensitivity, selectivity, and unique optical properties, making it suitable for health and medical applications. It also offers advantages of low-cost fabrication and mass production.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Wesley Flavell, Andreas Neophytou, Angela Demetriadou, Tim Albrecht, Dwaipayan Chakrabarti
Summary: This article presents a method for programmed self-assembly of single colloidal gyroid crystals using rationally designed patchy spheres. The single colloidal gyroid has a wide photonic bandgap and rich chiroptical properties, making it an attractive chiral photonic crystal.
ADVANCED MATERIALS
(2023)
Article
Mechanics
Zhongyu Zheng, Xinliang Xu, Yuren Wang, Yilong Han
Summary: This study investigated the hydrodynamic interactions of two colloidal ellipsoids sediment in channels, revealing the critical role of confinement extent and particle shape anisotropy in anomalous hydrodynamic and diffusive behaviors. The findings suggest that negative rotation-rotation coupling and positive translation-rotation coupling are key characteristics of ellipsoid interactions. Additionally, a simple model proposed in this study has successfully reproduced some coupling phenomena observed between the ellipsoids, further confirmed by low-Reynolds-number hydrodynamic simulation.
JOURNAL OF FLUID MECHANICS
(2022)
Review
Environmental Sciences
Tadele Assefa Aragaw, Fekadu Mazengiaw Bogale
Summary: Textile industry wastewater is a growing concern due to its high load of organic dyes, solids, pH, and low biodegradability. The use of tertiary filters, particularly membrane filtrations, is preferred in wastewater treatment processes. However, fouling is still a challenge due to the high levels of suspended and colloidal solids. Therefore, the coagulation/flocculation process is critical as a pretreatment option to prevent fouling and produce high-quality water.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Review
Acoustics
Mark louis p. Vidallon, Boon mian Teo, Alexis i. Bishop, Rico f. Tabor
Summary: Ultrasound has important applications in diagnostic imaging, and new colloidal systems are being developed to address issues with commercial ultrasound contrast agents and expand their utility in targeted drug delivery and multimodal imaging. These systems, fabricated from or modified with biologically derived materials, show potential for biomedical applications, particularly imaging-guided treatments. This review article discusses recent developments, challenges, limitations, and future directions of colloids with ultrasound contrast enhancement.
ULTRASOUND IN MEDICINE AND BIOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Sang Hoon Lee, Bum Jun Kim, Tuqeer Nasir, Ik Jun Choi, Byung Joo Jeong, Chaeheon Woo, Hyung Kyu Lim, Youngho Kim, Sitansu Sekhar Nanda, Dong Kee Yi, Hak Ki Yu, Jae-Young Choi
Article
Chemistry, Physical
Seungbae Oh, Kyung Hwan Choi, Sudong Chae, Bum Jun Kim, Byung Joo Jeong, Sang Hoon Lee, Jiho Jeon, Youngho Kim, Sitansu Sekhar Nanda, Liyi Shi, Dong Kee Yi, Jae-Hyun Lee, Hak Ki Yu, Jae-Young Choi
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Review
Pharmacology & Pharmacy
Sitansu S. Nanda, Md Imran Hossain, Heongkyu Ju, Dong Kee Yi
Summary: GSK-3 inhibitors show promise in treating various types of cancers, including colon carcinoma, by reinstating antagonism towards TRAIL and inhibiting cancer cell survival and spread, leading to improved patient survival rates. Extensive evaluation and clinical studies are necessary before widespread application of proposed mechanisms of GSK-3 inhibitors.
CURRENT DRUG TARGETS
(2021)
Article
Materials Science, Multidisciplinary
Marianna Vasilakaki, Fevronia Gemenetzi, Eamonn Devlin, Dong Kee Yi, Siti Nurhanna Riduan, Su Seong Lee, Jackie Y. Ying, Georgia C. Papaefthymiou, Kalliopi N. Trohidou
Summary: The effect of core size on the magnetic behavior of nanoparticle assemblies was investigated, showing that an increase in magnetic core size results in a shift of the maximum magnetization peak to higher temperatures. The study sheds light on how interparticle distance and magnetic core size influence the behavior of the assembly.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Sugato Hajra, Manisha Sahu, Aneeta Manjari Padhan, In Sang Lee, Dong Kee Yi, Perumal Alagarsamy, Sitansu Sekhar Nanda, Hoe Joon Kim
Summary: The use of cyclodextrin in green energy applications shows great potential, with CD-MOF as a new material to improve the performance of triboelectric nanogenerators and output electrical energy. By utilizing the newly synthesized material in experiments, the output differences of CD-MOF with different potentials were confirmed, demonstrating their potential applications in low-power electronic devices.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Infectious Diseases
Manoj Kumar Sarangi, Sasmita Padhi, Shrivardhan Dheeman, Santosh Kumar Karn, L. D. Patel, Dong Kee Yi, Sitansu Sekhar Nanda
Summary: This review provides insights into the epidemiology, virology, diagnosis, and treatment options of COVID-19, emphasizing the importance of nanotechnology-based treatments and herbal, marine antiviral drugs. It also discusses the significance of artificial intelligence and vaccine development in controlling the spread of COVID-19.
EXPERT REVIEW OF ANTI-INFECTIVE THERAPY
(2022)
Article
Multidisciplinary Sciences
Sitansu Sekhar Nanda, Tuntun Wang, Hong Yeol Yoon, Seong Soo A. An, K. P. S. S. Hembram, Kwangmeyung Kim, Dong Kee Yi
Summary: The study involved designing and fabricating a scaffold embedded with gold nanorods to regulate rabbit chondrocyte proliferation through NIR irradiation, achieving biocompatibility and high cell survival rates.
SCIENTIFIC REPORTS
(2021)
Article
Biophysics
Karthikeyan Mariyappan, Suyoun Park, Sitansu Sekhar Nanda, Samanth Kokkiligadda, Soojin Jo, Jayeon Lee, Anshula Tandon, Dong Kee Yi, Sung Ha Park
Summary: Electrospun fibres and thin films made of DNA and CDNA embedded with dyes, OLEMs, and GNRs offer a wide range of applications in energy, thermodynamics, and biomedicine. These materials exhibit excellent performance, including selectivity of dimensionality, solubility in various solvents, and functionality enhancement, making them suitable for diverse devices and sensors.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Review
Chemistry, Medicinal
Sitansu Sekhar Nanda, Dong Kee Yi, Om Prakash Panda, Sridevi Chigurupati, Tapas Kumar Mohapatra, Md Imran Hossain
Summary: Indazole is a nitrogen-containing heterocyclic compound that possesses special biological properties such as antimicrobial, anti-inflammatory, anticancer, anti-HIV, and antihypertensive actions. Its derivatives also show similar activities and may have potential as new drug candidates.
CURRENT TOPICS IN MEDICINAL CHEMISTRY
(2022)
Correction
Pharmacology & Pharmacy
Sitansu S. Nanda, Md Imran Hossain, Heongkyu Ju, Georgia C. Papaefthymiou, Dong Kee Yi
CURRENT DRUG TARGETS
(2022)
Article
Nanoscience & Nanotechnology
Sitansu Sekhar Nanda, Tuntun Wang, Md Imran Hossain, Hong Yeol Yoon, Subramanian Tamil Selvan, Kwangmeyung Kim, Dong Kee Yi
Summary: This study developed a gold nanorod-incorporated scaffold that controlled heat shock protein and improved wound healing through external light stimulation. In vitro experiments showed that the scaffold had no harmful effects on cells and promoted cell proliferation. In mouse experiments, the scaffold increased local temperature, effectively promoted HSP70 expression, and enhanced the wound healing process.
ACS APPLIED NANO MATERIALS
(2022)
Review
Pharmacology & Pharmacy
Manoj Kumar Sarangi, Sasmita Padhi, L. D. Patel, Goutam Rath, Sitansu Sekhar Nanda, Dong Kee Yi
Summary: This article discusses the potential and application of biosurfactants (BSs) in combating pandemics.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Md Imran Hossain, Sitansu Sekhar Nanda, Subramanian Tamil Selvan, Dong Kee Yi
Summary: Controlling cell behavior using photo-responsive materials is crucial in the biomedical field. However, the potential side effects of nanoparticles pose a challenge. Recent studies have explored various methods using nanoparticles and near-infrared laser light to control cell behavior, but there is a need for addressing issues such as biocompatibility and interactions with cells.
Article
Chemistry, Analytical
Md Imran Hossain, Sitansu Sekhar Nanda, Sooheon Cho, Bom Lee, Bum Jun Kim, Jae-Young Choi, Dong Kee Yi
Summary: Surface-enhanced Raman spectroscopy (SERS) is an effective technique for label-free detection of biomolecules with enhanced sensitivity. In this study, we investigated the electrostatic interactions of bacterial samples with gold nanorods (AuNRs) and graphene, and established a voltage-gated 3D graphene functionalized with an AuNR-based device for SERS measurements. Our fabricated device provides a label-free, rapid, and reproducible analysis of bacterial samples based on the density of AuNRs when functionalizing flake-like 3D graphene, offering great potential for label-free bacteria sensing platforms.
Article
Nanoscience & Nanotechnology
Sitansu Sekhar Nanda, Sandeep Kaushal, Yong Shin, Kyusik Yun, Seong Soo A. An, K. P. S. S. Hembram, Georgia C. Papaefthymiou, Dong Kee Yi
Summary: This study introduces a label-free biosensor based on monolayer graphene, which exploits the electron-phonon coupling to modify the Raman spectroscopic signatures within cancer cell compartments. Density functional theory simulations reveal a correlation between cancer cells and the observed Raman spectra, showing that cancer cells can be detected by controlling the intensities of the G and 2D Raman vibrational modes with applied voltage. The detection of phenylalanine bonds enables biosensing activity even without the need for cancer cell-culturing steps.
ACS APPLIED BIO MATERIALS
(2021)