Nanoscience & Nanotechnology

Article Nanoscience & Nanotechnology

Dimensionless parameter of structural ordering and excess entropy of metallic and tellurite glasses

A. S. Makarov, G. V. Afonin, R. A. Konchakov, V. A. Khonik, J. C. Qiao, A. N. Vasiliev, N. P. Kobelev

Summary: By introducing a dimensionless order parameter 4, the structural order of glass can be estimated, and this parameter shows a strong correlation with the glass-forming ability.

SCRIPTA MATERIALIA (2024)

Article Nanoscience & Nanotechnology

Lowering the ductile-to-brittle transition temperature to-36 °C via fine-grained structures in chromium

Yan Lu, Wei-Zhong Han

Summary: The low temperature toughness of BCC metals, such as chromium, can be greatly enhanced by designing a fine-grained structure. The fine grains act as dislocation sources, emitting easy glide edge dislocations at low temperature, which effectively slows down crack propagation and increases the toughness of chromium.

SCRIPTA MATERIALIA (2024)

Article Nanoscience & Nanotechnology

The role of stress release in shaping iron whisker morphology during oxygen removal process

Kaihui Ma, Qinghui Wu, Panshuai Ma, Lingxiao Bai, Jian Xu

Summary: Metal growth is crucial for the efficiency and performance of processes in materials manufacturing or applications. This study focuses on the poorly understood growth of metal during oxygen removal from its oxides. The role of stress release in the formation of iron whiskers is investigated, and the superior stress release capabilities of hydrogen compared to carbon monoxide are emphasized. The development of a larger-sized nanoscale hole structure effectively inhibits the growth of whiskers.

SCRIPTA MATERIALIA (2024)

Article Biophysics

Rapid estimation of electroporation-dependent tissue properties in canine lung tumors using a deep neural network

Edward J. Jacobs, Kenneth N. Aycock, Pedro P. Santos, Joanne L. Tuohy, Rafael V. Davalos

Summary: The efficiency of electroporation treatments depends on the application of a critical electric field over the targeted tissue volume. A deep neural network trained on finite element model simulations was developed to predict tissue properties from a measured voltage ramp, showing minimal test error and great utility in clinical applications. The platform can quickly ascertain patient-specific tissue properties required for treatment planning.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Precise determination of reaction conditions for accurate quantification in digital PCR by real-time fluorescence monitoring within microwells

Qi Xu, Jinze Li, Zhiqi Zhang, Qi Yang, Wei Zhang, Jia Yao, Yaxin Zhang, Yueye Zhang, Zhen Guo, Chao Li, Shuli Li, Changsong Zhang, Chuanxin Wang, Lutao Du, Chuanyu Li, Lianqun Zhou

Summary: Real-time digital polymerase chain reaction (qdPCR) integrates absolute quantification with process information, improving precision in molecular diagnostics. We propose a novel approach to determine optimal reaction conditions for qdPCR using real-time fluorescence monitoring in microwells. By leveraging an ultrathin laminated chip (UTL chip), we achieve faster amplification and higher accuracy, showing promise for molecular diagnostics.

BIOSENSORS & BIOELECTRONICS (2024)

Article Nanoscience & Nanotechnology

Effect of secondary phases on the selectivity of CO2 reduction properties of Mg-based alloy

Yadong Huang, Sujuan Wu, Ran Wen, Daiqi Zhou, Yaguang Li, Jiangfeng Song, Zhihua Dong, Bin Jiang

Summary: This study proposes a strategy to achieve hydrogen adsorption and utilization using magnesium-based alloys under sunlight. By tailoring the secondary phases in the material, catalytic reactions can be directly promoted, leading to the conversion of CO2. The results show that the MgO/Mg interface and Li4SiO4 particles play different roles in various reactions.

SCRIPTA MATERIALIA (2024)

Article Biophysics

Lithography-free interdigitated electrodes by trench-filling patterning on polymer substrate for Alzheimer's disease detection

M. Mahabubur Rahman, Nabil H. Bhuiyan, Minjun Park, M. Jalal Uddin, Gyeong J. Jin, Joon S. Shim

Summary: In this work, a novel and low-cost fabrication technology for interdigitated electrode array (IDA) electrodes on the polymer substrate was developed. The fabricated IDA electrode showed high sensitivity and detection limit in electrochemical detection of biomarkers.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

A cost-effective, mix & act G-quadruplex/Cu (II) metal-nanozyme-based ratiometric fluorescent platform for highly sensitive and selective cysteine/ bleomycin detection and multilevel contrary logic computing

Jun Wang, Jiawen Han, Juan Wang, Xujuan Lv, Daoqing Fan, Shaojun Dong

Summary: This study reports a ratiometric fluorescent platform based on nanozymes for the highly sensitive detection of cysteine and bleomycin. The platform exhibits acceptable performance and high selectivity, and shows good performance in human serum samples. Additionally, DNA contrary logic pairs and multilevel concatenated circuits were fabricated, enriching the building blocks of biocomputing.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Fluorescence lifetime imaging microscopy for early diagnosis and severity prediction of preeclampsia with Nile Blue probe

Yinru Zhu, Benqing Wu, Xinwei Gao, Yong Guo, Xiao Peng, Luwei Wang, Xuewu Tian, Jian Wang, Wei Yan, Hui Zhang, Junle Qu

Summary: Preeclampsia is a common pregnancy complication and the leading cause of maternal and perinatal mortality. However, early diagnostic methods for preeclampsia are still rare. This study explores the possibility of using fluorescence lifetime imaging and the Nile Blue probe for the early diagnosis and severity prediction of preeclampsia.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Magnetic Janus micromotors for fluorescence biosensing of tacrolimus in oral fluids

Bettina Glahn-Martinez, Beatriz Jurado-Sanchez, Elena Benito-Pena, Alberto Escarpa, Maria C. Moreno-Bondi

Summary: This study developed a novel bioassay for monitoring FK506 using magnetic Janus micromotors and a recombinant chimera receptor. The bioassay utilized a fluorescence competitive method between the drug and the micromotors to achieve a one-step assay without washing steps. The method exhibited a high limit of detection and dynamic range, and was able to operate in raw samples.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

3D-printed, aptamer-based microneedle sensor arrays using magnetic placement on live rats for pharmacokinetic measurements in interstitial fluid

Maria Reynoso, An-Yi Chang, Yao Wu, Raygan Murray, Smrithi Suresh, Yuma Dugas, Joseph Wang, Netzahualcoyotl Arroyo-Curras

Summary: Molecular monitoring in the dermal interstitial fluid (ISF) has the potential to screen markers of health and disease status in a painless manner. This study presents an innovative approach to address the poor patch stability of microneedle sensors on live rodents by using magnetic placement. Real-time pharmacokinetic measurements in live rats demonstrate the effectiveness of this approach. The future prospects and challenges of this technology are also discussed.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

3D plasmonic hexaplex paper sensor for label-free human saliva sensing and machine learning-assisted early-stage lung cancer screening

Vo Thi Nhat Linh, Hongyoon Kim, Min-Young Lee, Jungho Mun, Yeseul Kim, Byeong-Ho Jeong, Sung-Gyu Park, Dong-Ho Kim, Junsuk Rho, Ho Sang Jung

Summary: This study developed a flexible and highly absorptive three-dimensional plasmonic nanostructure sensor for rapid lung cancer screening and diagnosis. The sensor successfully detected and classified lung cancer in patient saliva samples. Additionally, the study investigated important Raman peak positions related to different stages of lung cancer, providing insights for early-stage cancer diagnosis.

BIOSENSORS & BIOELECTRONICS (2024)

Article Chemistry, Applied

Upgrading the oxidative desulfurization performance of metal-organic frameworks with proton stimulation

Lulu Wan, Gan Ye, Yuying Chang, Zhaohan Yang, Guangming Shi, Qiuli Zhang, Jin Wang

Summary: This study developed an efficient approach to upgrade the oxidative desulfurization (ODS) performance of Zr-MOFs with proton stimulation. Experimental results showed that the introduction of protons can significantly improve the ODS efficiency. This work provides a facile and efficient strategy for enhancing the ODS performance of pristine MOFs.

MICROPOROUS AND MESOPOROUS MATERIALS (2024)

Article Nanoscience & Nanotechnology

Build atmosphere aided texture control in additively manufactured FeCrAl steel by laser powder bed fusion

Yanan Wang, Binbin Wang, Liangshun Luo, Binqiang Li, Baoxian Su, Dayong Chen, Tong Liu, Liang Wang, Yanqing Su, Jingjie Guo, Hengzhi Fu

Summary: By properly selecting the process atmosphere, the researchers were able to control the crystallographic texture of laser powder bed fusion (LPBF) manufactured FeCrAl parts. They discovered that different process atmospheres resulted in different microstructures and texture formation mechanisms.

SCRIPTA MATERIALIA (2024)

Article Nanoscience & Nanotechnology

Gamma prime precipitation in as-deposited Ni-based superalloy IN713LC

J. R. Miller, J. F. S. Markanday, S. M. Fairclough, G. J. Wise, C. M. F. Rae, L. R. Owen, D. Stapleton, N. D'Souza, P. A. J. Bagot, H. J. Stone

Summary: Atomic resolution transmission electron microscopy was used to investigate the as-deposited microstructure of a laser powder-bed-fusion manufactured Ni-based superalloy. The study revealed the presence of non-equilibrium gamma' precipitates in nano-structured domains throughout the microstructure, exhibiting clear L12 ordering but irregular matrix-precipitate interfaces.

SCRIPTA MATERIALIA (2024)

Article Nanoscience & Nanotechnology

Observations of the occurrence and disappearance of peritectic couple growth performed under microgravity conditions

Andreas Ludwig, Johann Mogeritsch

Summary: Peritectic couple growth (PCG) is an unusual growth form where the peritectic and pro-peritectic solid phases solidify similar to a regular eutectic. Experiments were conducted at the International Space Station to investigate the dynamics of PCG formation and growth using the organic peritectic alloy Tris(hydroxymethyl)aminomethane-Neopentylglycol. Both fully planar and partly planar/cellular PCGs were observed and analyzed. PCG initiates with the formation of lateral bands from the peritectic phase that overgrow most of the pro-peritectic phase but not completely. The remaining patches transform into rods and/or lamellae during coupled growth.

SCRIPTA MATERIALIA (2024)

Article Chemistry, Applied

A green route of isobutane-butene alkylation catalyzed by Y zeolite modified with synergistic F-containing solution

Chengxi Zhang, Meng Lin, Shunli Zhou, Yongxiang Li, Xingtian Shu

Summary: By optimizing the acidity and pore structure of zeolites using a synergistic F-containing solution modification method, the diffusion performance of isobutane-butene alkylation catalysts can be improved without damaging the acidity of the zeolites, leading to an extended lifetime.

MICROPOROUS AND MESOPOROUS MATERIALS (2024)

Article Chemistry, Applied

One-step synthesis of hollow and yolk-shell mesoporous organosilica nanospheres for efficient separation of lead ions

Shichun Gu, Ruyi Wang, Junxiong Zhang, Hairong Dong, Liping Deng, Xue Wang, Yapeng He

Summary: In this study, monodispersed hollow mesoporous organosilica nanospheres with controlled core cavity and mesoporous shell were successfully synthesized. These hollow nanospheres showed a high adsorption capacity for Pb2+ in water solution and exhibited acceptable recycling and stability.

MICROPOROUS AND MESOPOROUS MATERIALS (2024)

Article Nanoscience & Nanotechnology

Ultrastrong and ductile additively-manufactured medium-carbon steel via modulating austenite stability

Jinhua Wang, Shidong Wang, Weiting Li, Yingjie Yao, Xiaopei Wang, Zhigang Yang, Hao Chen

Summary: Selective laser melting is a promising method for manufacturing complex-shaped metallic parts. By investigating the manufacturing issues of conventional medium-carbon H13 steel, the critical role of austenite stability in cracking behavior and ductility was revealed.

SCRIPTA MATERIALIA (2024)

Article Nanoscience & Nanotechnology

Achieving superior combined cryogenic strength and ductility in a high-entropy alloy via the synergy of low stacking fault energy and multiscale heterostructure

Zibing An, Shengcheng Mao, Cheng Jiang, Ziyao Li, Shichang Wu, Yadi Zhai, Li Wang, Yinong Liu, Ze Zhang, Xiaodong Han

Summary: A high-entropy alloy (HEA) with low stacking fault energy and high strength was designed using the principle of heterostructure strengthening. The alloy exhibited a multi-scale heterogeneous microstructure containing hierarchical twins. It achieved ultrahigh yield strength, ultimate tensile strength, and large ductility at low temperature, surpassing most FCC HEAs reported so far and breaking the strength-ductility trade-off of conventional metal alloys. The extraordinary mechanical properties were attributed to a suitable strain hardening capability resulting from the synergistic effect of hetero-deformation-induced hardening, twinning-induced plasticity, and deformation-induced phase transformation.

SCRIPTA MATERIALIA (2024)