journal
https://read.qxmd.com/read/38516872/er-3-activated-ba-2-v-2-o-7-upconversion-nanosheets-for-dual-mode-temperature-sensing
#21
JOURNAL ARTICLE
Satish Kumar Samal, Sahana Kulkarni, Jyoti Yadav, Boddu S Naidu
So far, there has been substantial research on non-contact luminescence thermometry approaches that rely on luminescence intensity ratio (LIR) technology. However, there is limited availability of phosphors doped with Er3+ ions that exhibit on-par luminescence and high sensitivity. In this work, samples of Ba2 V2 O7 :Er3+ were synthesized using a sol-gel method aided by citric acid. The luminescence properties of these samples, including upconversion and down-shifting, were investigated using both ultraviolet and 980 nm laser stimulation...
March 22, 2024: Nanoscale
https://read.qxmd.com/read/38512302/mechanistic-insights-into-on-surface-reactions-from-isothermal-temperature-programmed-x-ray-photoelectron-spectroscopy
#22
JOURNAL ARTICLE
Lukas Grossmann, Manuela Hocke, Gianluca Galeotti, Giorgio Contini, Luca Floreano, Albano Cossaro, Amit Ghosh, Michael Schmittel, Johanna Rosen, Wolfgang M Heckl, Jonas Björk, Markus Lackinger
On-surface synthesis often proceeds under kinetic control due to the irreversibility of key reaction steps, rendering kinetic studies pivotal. The accurate quantification of reaction rates also bears potential for unveiling reaction mechanisms. Temperature-Programmed X-ray Photoelectron Spectroscopy (TP-XPS) has emerged as an analytical tool for kinetic studies with splendid chemical and sufficient temporal resolution. Here, we demonstrate that the common linear temperature ramps lead to fitting ambiguities...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38512219/ultralight-aerogels-via-supramolecular-polymerization-of-a-new-chiral-perfluoropyridine-based-sulfonimidamide-organogelator
#23
JOURNAL ARTICLE
Giampiero Proietti, Anton Axelsson, Antonio J Capezza, Yogesh Todarwal, Julius Kuzmin, Mathieu Linares, Patrick Norman, Zoltán Szabó, Christofer Lendel, Richard T Olsson, Peter Dinér
Chiral and enantiopure perfluorinated sulfonimidamides act as low-molecular weight gelators at low critical gelation concentration (<1 mg mL-1 ) via supramolecular polymerization in nonpolar organic solvents and more heterogenic mixtures, such as biodiesel and oil. Freeze-drying of the organogel leads to ultralight aerogel with extremely low density (1 mg mL-1 ). The gelation is driven by hydrogen bonding resulting in a helical molecular ordering and unique fibre assemblies as confirmed by scanning electron microscopy, CD spectroscopy, and computational modeling of the supramolecular structure...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38512078/effects-of-the-surface-energy-and-surface-stress-on-the-phase-stability-of-spin-crossover-nano-objects-a-thermodynamic-approach
#24
JOURNAL ARTICLE
Shiteng Mi, Karl Ridier, Gábor Molnár, William Nicolazzi, Azzedine Bousseksou
Size-induced phase transformation at the nanoscale is a common phenomenon whose understanding is essential for potential applications. Here we investigate phase equilibria in thin films and nanoparticles of molecular spin crossover (SCO) materials. To calculate the size-temperature phase diagrams we have developed a new nano-thermodynamic core-shell model in which intermolecular interactions are described through the volume misfit between molecules of different spin states, while the contributions of surface energy and surface stress are explicitly included...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38511999/licoo-2-impregnated-nano-hierarchical-zsm-5-assisted-catalytic-upgrading-of-kraft-lignin-derived-liquefaction-bio-oil
#25
JOURNAL ARTICLE
Ashutosh Agarwal, Xue Li
In this study, Kraft lignin-derived bio-oil was upgraded with LiCoO2 or Co3 O4 -impregnated hierarchical nano-ZSM-5 catalysts. The synthesized catalysts were characterized by N2 -Ads-Des, XRD, XPS, NH3 -TPD, FTIR, FESEM and ICP-OES analyses. Upon incorporation of LiCoO2 and Co3 O4 onto the HZSM-5 support, the MFI structure of HZSM-5 remained intact. All the catalysts displayed a combination of Type-I and -IV isotherms. The upgraded bio-oil showed a significant increase in the amounts of alkylated guaiacols owing to the reduction in unsubstituted guaiacols, alkenyl guaiacols, and homovanillic acid...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38511991/recent-advances-in-functional-micro-nanomaterials-for-removal-of-crude-oil-via-thermal-effects
#26
REVIEW
Duanhong Yan, Kai Yin, Yuchun He, Yao Liu, Lingxiao Wang, Qinwen Deng, Jun He, Saif Ullah Awan, Ahmed S G Khalil
Crude oil is one of the most widely used energy and industrial raw materials that is crucial to the world economy, and is used to produce various petroleum products. However, crude oil often spills during extraction, transportation and use, causing negative impacts on the environment. Thus, there is a high demand for products to remediate leaked crude oil. Among them, oleophilic and hydrophobic adsorbents can absorb crude oil through thermal effects and are research hotspots. In this review, we first present an overview of wettability theory, the heating principles of various thermal effects, and the theory of reducing crude oil viscosity by heating...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38511623/flash-nanoprecipitation-assisted-self-assembly-of-ionizable-lipid-nanoparticles-for-nucleic-acid-delivery
#27
JOURNAL ARTICLE
Bishal Misra, Krystal A Hughes, William H Pentz, Parinya Samart, Werner J Geldenhuys, Sharan Bobbala
Ionizable lipid nanoparticles (LNPs) have emerged as a powerful tool for the intracellular delivery of nucleic acids. Following the recent success of LNP-based siRNA therapeutics and mRNA vaccines, the use of ionizable lipids for nucleic acid delivery has tremendously increased. Here, we introduce a flash nanoprecipitation (FNP) approach using the confined impingement (CIJ) mixer to stably self-assemble ionizable LNPs. To validate this approach, we employed three clinically relevant LNP formulations containing SM102, ALC0315, and DLin-MC3-DMA as ionizable lipids...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38511606/quantifying-particle-concentration-via-ai-enhanced-optical-coherence-tomography
#28
JOURNAL ARTICLE
Siqi Ye, Lei Xing, David Myung, Fang Chen
Efficient and robust quantification of the number of nanoparticles in solution is not only essential but also insufficient in nanotechnology and biomedical research. This paper proposes to use optical coherence tomography (OCT) to quantify the number of gold nanorods, which exemplify the nanoparticles with high light scattering signals. Additionally, we have developed an AI-enhanced OCT image processing to improve the accuracy and robustness of the quantification result.
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38511468/macrophage-modulating-nanomedicine-for-cancer-immunotherapy
#29
REVIEW
Muhammad Muzamil Khan, Yongjiang Li, Zhuoming Zhou, Abigale Ni, Qimanguli Saiding, Duotian Qin, Wei Tao, Wei Chen
Tumor-associated macrophages (TAMs) play crucial roles in the immunosuppressive solid tumor microenvironment (TME). Despite their tumor-promoting functions, TAMs can also be therapeutically modulated to exhibit tumor-killing properties, making them attractive targets for tumor immunotherapy. This review highlights the recent advances in nanomedicine-based strategies centered around macrophages for enhanced cancer immunotherapy. Emerging nanomedicine-based strategies to modulate TAMs in cancer treatment include repolarization of the TAM phenotype, inhibition of monocyte recruitment, depletion of TAMs, and blockage of immune checkpoints...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38511345/elevated-temperature-driven-coordinative-reconstruction-of-an-unsaturated-single-ni-atom-structure-with-low-valency-on-a-polymer-derived-matrix-for-the-electrolytic-oxygen-evolution-reaction
#30
JOURNAL ARTICLE
Rahul Patil, Anubha Rajput, Babasaheb M Matsagar, Norman C R Chen, Masaki Ujihara, Rahul R Salunkhe, Praveen Yadav, Kevin C-W Wu, Biswarup Chakraborty, Saikat Dutta
A high-temperature pyrolysis-controlled coordination reconstruction resulted in a single-Ni-atom structure with a Ni-N x -C structural unit ( x = N atom coordinated to Ni). Pyrolysis of Ni-phen@ZIF-8-RF at 700 °C resulted in NiNP-NC-700 with predominantly Ni nanoparticles. Upon elevating the pyrolysis temperature from 700 to 900 °C, a coordination reconstruction offers Ni-N x atomic sites in NiSA-NC-900. A combined investigation with X-ray absorption spectroscopy, X-ray photoelectron spectroscopy, and soft X-ray L3 -edge spectroscopy suggests the stabilization of low-valent Ni δ + (0 < δ < 2) in the Ni-N-C structural units...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38511341/point-of-care-devices-engaging-green-graphene-an-eco-conscious-and-sustainable-paradigm
#31
REVIEW
Joydip Sengupta, Chaudhery Mustansar Hussain
The healthcare landscape has experienced a profound and irreversible transformation, primarily driven by the emergence of nanomaterial-assisted point-of-care (POC) devices. The inclusion of nanomaterials in POC devices has revolutionized healthcare by enabling rapid, on-site diagnostics with minimal infrastructure requirements. Among the materials poised to lead this technological revolution, green graphene emerges as a compelling contender. It possesses a unique combination of exceptional material properties and environmentally conscious attributes...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38511340/gesn-on-gaas-with-photoconductive-carrier-lifetime-400-ns-role-of-substrate-orientation-and-atomistic-simulation
#32
JOURNAL ARTICLE
Sengunthar Karthikeyan, Steven W Johnston, Dhammapriy Gayakwad, Suddhasatta Mahapatra, Robert J Bodnar, Jing Zhao, Rutwik Joshi, Mantu K Hudait
Group IV GeSn quantum material finds application in electronics and silicon-compatible photonics. Synthesizing these materials with low defect density and high carrier lifetime is a potential challenge due to lattice mismatch induced defects and tin segregation at higher growth temperature. Recent advancements in the growth of these GeSn materials on Si, Ge, GaAs, and with substrate orientations, demonstrated different properties using epitaxial and chemical deposition methods. This article addresses the effect of GaAs substrate orientation and misorientation on the materials' properties and carrier lifetimes in epitaxial Ge0...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38511284/doping-effect-on-a-two-electron-silver-nanocluster
#33
JOURNAL ARTICLE
Wei-Jung Yen, Jian-Hong Liao, Tzu-Hao Chiu, Jie-Ying Chen, Yuan Jang Chen, Samia Kahlal, Jean-Yves Saillard, C W Liu
This study investigates the effects of metal addition and doping of a 2-electron silver superatom, [Ag10 {S2 P(O i Pr)2 }8 ] (Ag10). When Ag+ is added to Ag10 in THF solution, [Ag11 {S2 P(O i Pr)2 }8 (OTf)] (Ag11) is rapidly formed almost quantitatively. When the same method is used with Cu+ , a mixture of alloys, [Cu x Ag11- x {S2 P(O i Pr)2 }8 ]+ ( x = 1-3, CuxAg11-x), is obtained. In contrast, introducing Au+ to Ag10 leads to decomposition. The structural and compositional analysis of Ag11 was characterized by single-crystal X-ray diffraction (SCXRD), ESI-MS, NMR spectroscopy, and DFT calculations...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38511283/advances-in-zeolitic-imidazolate-framework-based-catalysts-for-photo-electrocatalytic-water-splitting-co-2-reduction-and-n-2-reduction-applications
#34
REVIEW
Jiaorong Wang, Lihong Yuan, Pan Zhang, Jing Mao, Jiajie Fan, Xiao Li Zhang
Harnessing electrical or solar energy for the renewable production of value-added fuels and chemicals through catalytic processes (such as photocatalysis and electrocatalysis) is promising to achieve the goal of carbon neutrality. Owing to the large number of highly accessible active sites, highly porous structure, and charge separation/transfer ability, as well as excellent stability against chemical and electrochemical corrosion, zeolite imidazolate framework (ZIF)-based catalysts have attracted significant attention...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38511281/patterned-growth-of-agbis-2-nanostructures-on-arbitrary-substrates-for-broadband-and-eco-friendly-optoelectronic-sensing
#35
JOURNAL ARTICLE
Yu Miao, Zhuoran Wang, Zhongming Wei, Guozhen Shen
The patterning of functional nanomaterials shows a promising path in the advanced fabrication of electronic and optoelectronic devices. Current micropatterning strategies are indispensable for post-etching/liftoff processes that contaminate/damage functional materials. Herein, we developed an innovative, low-temperature, post-liftoff-free, seed-confined fabricating strategy that can tackle this issue, thus achieving designated patterns of flower-shaped AgBiS2 nanostructures at either micro- or macro-scale on arbitrary substrates that are either rigid or flexible...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38507273/an-innovative-experimental-and-mathematical-approach-in-electrochemical-sensing-for-mapping-a-drug-sensor-landscape
#36
JOURNAL ARTICLE
Madheswaran Madhavan, Babu Shobana, Duraisamy Pandiaraja, Periakaruppan Prakash
Our study delves into the examination of an electrochemical sensor through both experimentation and mathematical analysis. The sensor demonstrates the ability to identify a specific antipsychotic medication, namely Chlorpromazine Hydrochloride (CPH), even at incredibly low concentrations, reaching the picomolar level. The identification process relies on the utilization of a Glassy Carbon Electrode (GCE) that has been modified with a ceria-doped zirconia (CeO2 /ZrO2 ) nanocomposite. The nanocomposite was synthesized using the co-precipitation technique and extensively characterized through various analytical methods...
March 20, 2024: Nanoscale
https://read.qxmd.com/read/38507222/a-dendrite-free-zn-anode-enabled-by-pedot-pss-mos-2-electrokinetic-channels-for-aqueous-zn-ion-batteries
#37
JOURNAL ARTICLE
Hai Wang, Qin Zhao, Weimin Li, Shun Watanabe, Xiaobo Wang
Notorious Zn dendrites and severe parasitic side reactions severely disrupt the anode-electrolyte interface during Zn plating/stripping, resulting in uncontrollable Zn deposition and limiting the application of aqueous zinc-ion batteries (AZIBs). Although the construction of an artificial interface is a highly desirable strategy, it is often limited by slow Zn2+ transport kinetics. To address these issues, we present a bifunctional polymer coating (PEPM) constructed from highly conductive PEDOT:PSS and monolayer MoS2 , where the introduced PEDOT plays an important role in driving the fast Zn ion transfer kinetics as a zincophilic site and 2D MoS2 acts as a buffer layer to induce uniform Zn nucleation...
March 20, 2024: Nanoscale
https://read.qxmd.com/read/38506642/size-and-temperature-dependent-shapes-of-copper-nanocrystals-using-parallel-tempering-molecular-dynamics
#38
JOURNAL ARTICLE
Huaizhong Zhang, Mohd Ahmed Khan, Tianyu Yan, Kristen A Fichthorn
We performed parallel-tempering molecular dynamics simulations to predict the temperature- and size-dependent equilibrium shapes of a series of Cu nanocrystals in the 100- to 200-atom size range. Our study indicates that temperature-dependent, solid-solid shape transitions occur frequently for Cu nanocrystals in this size range. Complementary calculations with electronic density functional theory indicate that vibrational entropy favors nanocrystals with a shape intermediate between a decahedron and an icosahedron...
March 20, 2024: Nanoscale
https://read.qxmd.com/read/38506368/nanometrology-based-control-taming-radical-grafting-reactions-with-attoliter-precision
#39
JOURNAL ARTICLE
Baptiste Maillot, Jean-Frédéric Audibert, Fabien Miomandre, Vitor Brasiliense
Precisely controlled micropatterning with organic moieties is a promising route for designing smart surfaces, enabling the development of microsensors and actuators with optimal usage of reactants. Such applications require fine control over the surface modification process, which in turn demands detailed knowledge about the surface modification process. As complex surface kinetics often emerge as a result of even slight modifications of the grafting entity, non-invasive, sensitive and precise closed loop control strategies are highly desirable...
March 20, 2024: Nanoscale
https://read.qxmd.com/read/38506227/photoactive-imaging-and-therapy-for-colorectal-cancer-using-a-cea-affimer-conjugated-foslip-nanoparticle
#40
JOURNAL ARTICLE
Yazan S Khaled, M Ibrahim Khot, Radhika Aiyappa-Maudsley, Thomas Maisey, Arindam Pramanik, Jim Tiernan, Nicole Lintern, Eiman Al-Enezi, Shazana H Shamsuddin, Darren Tomlinson, Louise Coletta, Paul A Millner, Thomas A Hughes, David G Jayne
Theranostic nanoparticles hold promise for simultaneous imaging and therapy in colorectal cancer. Carcinoembryonic antigen can be used as a target for these nanoparticles because it is overexpressed in most colorectal cancers. Affimer reagents are synthetic proteins capable of binding specific targets, with additional advantages over antibodies for targeting. We fabricated silica nanoparticles using a water-in-oil microemulsion technique, loaded them with the photosensitiser Foslip, and functionalised the surface with anti-CEA Affimers to facilitate fluorescence imaging and photodynamic therapy of colorectal cancer...
March 20, 2024: Nanoscale
journal
journal
42895
2
3
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"

We want to hear from doctors like you!

Take a second to answer a survey question.