Article
Nanoscience & Nanotechnology
Yuqi Ma, Anhe Wang, Jieling Li, Qi Li, Qingquan Han, Yafeng Jing, Xuefang Zheng, Hongyu Cao, Xuehai Yan, Shuo Bai
Summary: The self-assembling behavior of peptides and derivatives plays a crucial role in constructing architectures and achieving specific functions in nature. However, the surface or interfacial self-assembly, especially on micro- or nanoparticles, has been less systematically studied. In this study, uniform porous CaCO3 micro particles with different surfaces were used to investigate the self-assembling behavior of dipeptides with various sequences. The experimental results showed that dipeptides with a negative charge preferentially self-assembled on the hydrophobic and positively charged surface of CaCO3 particles, and dipeptides with high Log p values had a significant effect on the self-assembling behavior on the surface of porous CaCO3.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Mechanics
Wenhai Lei, Xukang Lu, Fanli Liu, Moran Wang
Summary: This study reports the non-monotonic wettability effects on displacement efficiency in porous structures. Experiments show that there exists a critical wettability in porous matrix structures with preferential flow pathways to achieve the highest displacement efficiency. The distribution of phases in porous structures also varies under different wettability conditions. Pore-scale mechanisms are identified to explain the formation of this non-monotonic wettability rule.
JOURNAL OF FLUID MECHANICS
(2022)
Article
Multidisciplinary Sciences
Hongxia Li, Aikifa Raza, Shaojun Yuan, Faisal AlMarzooqi, Nicholas X. Fang, TieJun Zhang
Summary: This study presents a membrane-on-chip device with a fish gill structure integrated through micro-stereolithography 3D printing, showcasing self-sealing and anti-fouling properties for wastewater filtration. The biomimetic filtration devices exhibit significantly longer durability for high-flux filtration.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Qi-Zhi Zhong, Joseph J. Richardson, Ai He, Tian Zheng, Rene P. M. Lafleur, Jianhua Li, Wen-Ze Qiu, Denzil Furtado, Shuaijun Pan, Zhi-Kang Xu, Ling-Shu Wan, Frank Caruso
Summary: By employing a co-assembly strategy with quinone and polyamine building blocks, we have developed a method to precisely control the structure and properties of coatings on various materials, including thickness, adhesion, wettability, and zeta potential. The properties of the films can be tuned by increasing the length of the amine building blocks, and the films can be post-functionalized to form diverse nanostructures for various applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Vidhi Jain, Vashishtha B. Patel, Beena Singh, Dharmesh Varade
Summary: Microfluidics is a promising field with wide applications, providing fine control over particle size and speed in micro- and nanoscale self-assembled systems. It is a powerful tool for controlling physical and chemical properties of fluids and governing self-assembly processes, with potential impacts in various industries.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Wenchao Yang, Yicheng Zhou, Biao Jin, Xin Qi, Bin Cai, Qiuxiang Yin, Jim Pfaendtner, James J. De Yoreo, Chun-Long Chen
Summary: In the biological environment, mineral crystals controlled by biomacromolecules exhibit intricate structures and superior mechanical properties. Through the design of peptoids with strong binding to silica, self-assembled peptoid fibers can mimic the biocatalytic and templating functions of silicatein filaments, resulting in the formation of silica fibers. The presence of amino groups is crucial for nucleation of silica on self-assembled peptoid nanofibers. The formation of silica shell on peptoid fibers greatly enhances the mechanical property of hydrogel materials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Shahab Karimifard, Xu Li, Christian Elowsky, Yusong Li
Summary: The study demonstrates that the overall permeability of porous media, flow pathways, and overall/local pressure gradients are highly dependent on biofilm ratio and biofilm permeability when biofilm levels are high and intermediate. However, the impact of biofilm porosity is moderate in these cases. Simplified biofilm geometries can provide reasonable approximations of permeability when biofilm structures are well developed.
Article
Biotechnology & Applied Microbiology
Chunying Feng, Kohei Takahashi, Jianan Zhu
Summary: A method has been developed to selectively pattern the surface wettability of PDMS microfluidic devices for the generation of double emulsion (DE) droplets. The method utilizes plasma treatment to increase the hydrophilicity of PDMS, enabling the production of both water-in-oil-in-water and oil-in-water-in-oil DE droplets. The resulting microfluidic devices can be used for a variety of applications involving DE droplets.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Polymer Science
Chinnadurai Satheeshkumar, Bum-Joon Jung, Hansol Jang, Wonhee Lee, Myungeun Seo
Summary: Surface modification using Buchwald-Hartwig amination allows for the introduction of primary amine groups onto polymer surfaces, providing a facile and recyclable method for their installation. Covalent bonding between substrates via amine-isocyanate chemistry results in higher bonding strength compared to previous noncovalent methods.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Engineering, Environmental
Giulia Ceriotti, Sergey M. Borisov, Jasmine S. Berg, Pietro de Anna
Summary: Bacteria that use electron acceptors other than oxygen play a crucial role in element cycling and the attenuation/mobilization of natural contaminants, even in well-oxygenated porous environments. The occurrence of small-scale anoxic microenvironments, created by bacterial respiration and the transport of dissolved oxygen by pore water, allows anaerobic bacteria to proliferate in oxygenated environments. The dynamics of these microenvironments are still not well understood due to the difficulty of directly observing biomass and oxygen distributions at the microscale. This study integrated a microfluidic device with transparent oxygen sensors to overcome these limitations and revealed that bacterial colony morphology controls the formation of anoxic microenvironments in flowing porous systems.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Review
Biotechnology & Applied Microbiology
Xi Wang, Wentao Liu, Xinding Yu, Biyao Wang, Yan Xu, Xu Yan, Xinwen Zhang
Summary: This paper provides a systematic review of the research progress in tantalum surface modification, including the physicochemical properties, biological performance, and surface modification technologies of tantalum and porous tantalum.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Review
Chemistry, Physical
Shuning Xiao, Mengjia Huo, Yuchuan Guan, Haiyan Cao, Qian Huang, Linglong Chen, Shuangjun Li, Guisheng Li, Dieqing Zhang, Hexing Li
Summary: This review summarizes the advantages and mechanisms of microwave-positioning assembly as an innovative synthesis and modification method for nanomaterials. It also discusses the recent progress and future directions in the research of new catalysts with improved performances.
Article
Chemistry, Analytical
Zhixiong Song, Eric Shen Lin, Md Hemayet Uddin, Hassan Ali Abid, Jian Wern Ong, Tuck Wah Ng
Summary: Digital microfluidics is an advanced approach for micro-reactors, and this study found that graphene oxide paper fabricated by blade coating method exhibited excellent properties, making it suitable for digital microfluidics. The paper had low stiffness and high wettability, allowing rapid and complete wrapping of water drops. The experimental results showed that the paper could transfer drops over long distances without dislodgement even under accelerations and decelerations.
Article
Chemistry, Physical
C. Ugwumadu, R. Thapa, K. Nepal, A. Gautam, Y. Al-Majali, J. Trembly, D. A. Drabold
Summary: This study presents a novel method for constructing atomistic models of nanoporous carbon and investigates their properties and behavior. The models were created by randomly distributing carbon atoms and pore volumes in a periodic box and then using simulation tools to find the energy-minimum structures. The analysis revealed the structural characteristics, pore size distribution, and surface properties of the models, as well as their electronic, vibrational, thermal, and mechanical properties.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2023)
Article
Engineering, Biomedical
Ye Liu, Rui Wang, Shijie Ding, Liping Deng, Yuanyuan Zhang, Junyang Li, Ziao Shi, Zhongyuan Wu, Kaini Liang, Xiaojun Yan, Wei Liu, Yanan Du
Summary: The emerging field of cultured meat faces technical challenges in producing large quantities of quality muscle and fat tissues. Researchers have developed edible gelatin micro-carriers as scaffolds for cell expansion and tissue engineering for lab-grown meat. They successfully assembled muscle and fat tissues into meat-like products, demonstrating the potential for scalable production of cultured meat.
Article
Electrochemistry
Yaoli Zhao, Patatri Chakraborty, Nicholas Stavinski, Luis Velarde, Vaishali Maheshkar, Karthik Dantu, Arindam Phani, Seonghwan Kim, Thomas Thundat
Summary: Standoff detection based on optical spectroscopy is a highly selective method for identifying materials at a distance. In this study, we demonstrate that bi-material cantilever-based photothermal spectroscopy can be used for sensitive and selective detection of polymer films. We compare the spectral results obtained from standoff detection with those obtained from point detection, FTIR, and FTIR-ATR. Our results show that the technique can discriminate various polymers and detect thin layers of polymers in real-time. The sensitivity of the technique can be improved by optimizing the thermal sensitivity of the cantilever and increasing the number of photons.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Milad Kamkar, Elnaz Erfanian, Parisa Bazazi, Ahmadreza Ghaffarkhah, Farbod Sharif, Ganhua Xie, Aadithya Kannan, Mohammad Arjmand, S. Hossein Hejazi, Thomas P. Russell, Gerald G. Fuller, Uttandaraman Sundararaj
Summary: The assembly of graphene oxide (GO) at oil/water or air/water interfaces significantly increases the elasticity of the interface, making it an exceptional candidate for stabilizing the O/W interface. This super elastic character is utilized for all-liquid 2D printing, highlighting the potential applications in electronics, fluidic devices, and controlled release systems.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Danny Wong, Arindam Phani, Setareh Homayoonnia, Simon S. Park, Seonghwan Kim, Osama Abuzalat
Summary: 2D metal-organic frameworks (MOFs) have high surface area and active adsorption sites, making them appealing for gas sensing applications. In this study, a 2D-MOFs nanosheet, Zn-BTC, with approximately 2.52 nm thickness was synthesized using a fast and facile technique. The introduction of 8-hydroxyquinoline resulted in the formation of fluorescent compound ZnQ, which was encapsulated and decorated onto Zn-BTC. The synthesized material exhibited visible color change and fluorescence quenching upon exposure to ammonia, with detection limits of 0.27 ppm and 60.8 nm in gaseous and liquid phase sensing, respectively.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Environmental Sciences
Yelim Choi, Kyunghoon Kim, Seonghwan Kim, Daekeun Kim
Summary: This study proposes a method using machine learning for identifying odor sources in urban areas. The research shows that machine learning can accurately identify odor emission sources with high accuracy and time and cost can be saved by including only 6 important variables.
ATMOSPHERIC ENVIRONMENT-X
(2022)
Article
Nanoscience & Nanotechnology
Parisa Bazazi, Seyed Hossein Hejazi
Summary: Controlled transport of liquid droplets on solid surfaces is critical in various practical applications. In this study, non-contact aqueous drops are created on hydrophilic surfaces in an oleic environment and used to deposit submicrometer droplets encapsulating nanoparticles onto solid surfaces. The effect of surfactant and nanoparticle concentrations on wetting dynamics is studied, and a range of droplet spreading regimes is identified. This methodology enables the patterning of droplets in numerous applications, from pharmaceutical carriers to cosmetics and biomedical diagnoses.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Applied
Danny Wong, Seonghwan Kim, Osama Abuzalat
Summary: In this study, a direct synthesis method for manufacturing fluorescent metal organic frameworks (MOFs) with high sensitivity and selectivity is proposed. The fluorescent MOFs show a low detection limit for DMMP and prevent water adsorption.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Review
Materials Science, Paper & Wood
Aref Abbasi Moud, Milad Kamkar, Amir Sanati-Nezhad, Seyed Hossein Hejazi
Summary: This article reviews the microstructural characterization of cellulose nanocrystal (CNC)-based suspensions and hydrogels using imaging and rheological approaches, and introduces new applications of CNC suspensions and gels. Fine-tuning the properties of CNC colloids using existing methods and models is crucial due to the significant potential of CNC-based products in various fields.
Article
Environmental Sciences
Min-hyung Lee, Jongho Won, Sehyun Chung, Seonghwan Kim, Simon S. Park
Summary: This study proposes a method for rapid and accurate detection of ionic contents in water through the combination of ultraviolet spectroscopy, electrochemical impedance spectroscopy, and convolutional neural network. The results demonstrate the superiority of this method in predicting ionic concentrations compared to traditional methods such as partial least squares regression and random forest.
Article
Engineering, Mechanical
Hamid Mostaghimi, Jediael R. Pagtalunan, Bryan Moon, Seonghwan Kim, Simon S. Park
Summary: This study improves the data transmission rate and reliability in directional drilling techniques using a finite element model and acoustic telemetry method. Efficient signal transmission and decoding are achieved through techniques such as differential binary phase shift keying and convolutional encoding.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Multidisciplinary Sciences
Hossein Zargartalebi, S. Hossein Hejazi, Amir Sanati-Nezhad
Summary: The authors introduce a passive protocol to suppress the coffee-ring effect and form uniform films at micro- and nanoscales by combining superhydrophilic substrate with a neutral-wetting low-roughness mold. This method has broad applications in fabricating ordered coatings, producing nanofilters, and creating functionalized nanosensors.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Parisa Bazazi, Howard A. Stone, S. Hossein Hejazi
Summary: All-in-liquid printing enables the printing of functional networks in liquid medium, providing vast applications in fields such as functional cell engineering.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
Parisa Bazazi, Howard A. Stone, S. Hossein Hejazi
Summary: This study experimentally investigates the break-up of a liquid filament with silica nanoparticles in a surfactant-containing oil phase. It is found that when a viscoelastic layer forms at the interface, the pinch-off dynamics follows exponential decay. A simple approach is introduced to estimate the viscoelastic properties of liquid-fluid interfaces and the thickness of the interfacial layer, where direct measurement of interfacial rheology is not possible.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Setareh Homayoonnia, Arindam Phani, Seonghwan Kim
Summary: In this study, metal-organic frameworks (MOFs) and multiwall carbon nanotubes (MWCNTs) were synergized to achieve selective gas sensing of methane. This research provides a significant reference for future MOF-related composite materials research to achieve the best sensing performance.
Article
Chemistry, Multidisciplinary
Muhammad Toyabur Rahman, Md Sazzadur Rahman, Hitendra Kumar, Keekyoung Kim, Seonghwan Kim
Summary: Flexible triboelectric nanogenerators (TENGs) with multifunctional sensing capabilities offer a solution to energy supply challenges for wearable smart electronics. A highly stretchable and durable electrode for wearable TENG is developed using ZIF-8 as a reinforcing nanofiller in a hydrogel. The optimized ZIF-8-based hydrogel electrodes enhance the output performance of TENG, delivering an excellent power density of 3.47 Wm(-)(2), which is 3.2 times higher than pure hydrogel-based TENG. The developed TENG can scavenge biomechanical energy even at subzero temperatures and serve as self-powered pressure sensors and biomotion sensors.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Agriculture, Multidisciplinary
Mohammad Kazem Vakilzadeh Ebrahimi, Hansaem Lee, Jongho Won, Seonghwan Kim, Simon S. Park
Summary: In this study, a CNN model using fusion data with NIR and image was used to accurately predict sand, silt, and clay fractions of soil samples. The model performance was optimized through various preprocessing methods, image types, and size, resulting in high performance for both NIR and image datasets. The fusion dataset improved the model performance compared to using individual datasets, and the trained model showed better predictive performance than previous models, even with a small amount of training data.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2023)
