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V. A. L. Roy and co‐workers present a novel hybrid architecture to achieve programmable transistor nodes that are analogous to flash memory. On page 390, they incorporate a resistive switching random access memory as a switch gate for a transistor on a flexible substrate. The controlled, well‐defined memory window, long retention time, and fast access speed of this novel hybrid device may open up...
Many cancers show primary or acquired drug resistance due to the overexpression of efflux pumps. A novel mechanism to circumvent this is to integrate drugs, such as anthracycline antibiotics, with nanoparticle delivery vehicles that can bypass intrinsic tumor drug‐resistance mechanisms. DNA nanoparticles serve as an efficient binding platform for intercalating drugs (e.g., anthracyclines doxorubicin...
Thiolated peptides bearing the Ile‐Gly‐Asp (IGD) motif, a highly conserved sequence of fibronectin, are used for the preparation of anisotropic self‐assembled monolayers (SAM gradients) to study the whole‐population migratory behavior of metastatic breast cancer cells (MDA‐MB‐231 cells). Ile‐Gly‐Asp‐Gln‐(IGDQ)‐exposing SAMs sustain the adhesion of MDA‐MB‐231 cells by triggering focal adhesion kinase...
Here, a single‐device demonstration of novel hybrid architecture is reported to achieve programmable transistor nodes which have analogies to flash memory by incorporating a resistive switching random access memory (RRAM) device as a resistive switch gate for field effect transistor (FET) on a flexible substrate. A high performance flexible RRAM with a three‐layered structure is fabricated by utilizing...
Wide‐range, well‐separated, and tunable lifetime nanocomposites with ultrabright fluorescence are highly desirable for applications in optical multiplexing such as multiplexed biological detection, data storage, and security printing. Here, a synthesis of tunable fluorescence lifetime nanocomposites is reported featuring europium chelate grafted onto the surface of plasmonic core–shell nanoparticles,...
Conditions for the dispersion of molybdenum disulfide (MoS2) in aqueous solution at concentrations up to 0.12 mg mL−1 using a range of nonionic, biocompatible block copolymers (i.e., Pluronics and Tetronics) are identified. Furthermore, the optimal Pluronic dispersant for MoS2 is found to be effective for a range of other 2D materials such as molybdenum diselenide, tungsten diselenide, tungsten disulfide,...
Manganese oxide nanoparticles (MONPs) are capable of time‐dependent magnetic resonance imaging contrast switching as well as releasing a surface‐bound drug. MONPs give T2/T2* contrast, but dissolve and release T1‐active Mn2+ and L‐3,4‐dihydroxyphenylalanine. Complementary images are acquired with a single contrast agent, and applications toward Parkinson's disease are suggested.
A joint experimental and computational study is reported on the concentration‐dependant self‐assembly of a flat C3‐symmetric molecule on a graphite surface. As a model system a tripodal molecule, 1,3,5‐tris(pyridin‐3‐ylethynyl)benzene, has been chosen, which can adopt either C3h or Cs symmetry when planar, as a result of pyridyl rotation along the alkynyl spacers. Density functional theory (DFT) simulations...
Efficient drug loading and selectivity in drug delivery are two key features of a good drug‐carrier design. Here we report on such a drug carrier formed by using hollow mesoporous silica nanoparticles (HMS NPs) as the core and specifically designed multifunctional amphiphilic agents as the encapsulating shell. These nanocarriers combine the advantages of the HMS NP core (favorable physical and structural...
A low crystal mismatch strategy to fabricate novel LiFePO4 nanomeshes is presented by Y. Wang and co‐workers on page 516. The LiFePO4 nanomesh is characterized by numerous advantages, such as mesoporous structure, enhanced structural integrity, and a shortened Li ion diffusion pathway along the [010] direction. Furthermore, the obtained LiFePO4 nanomesh can be applied in lithium ion batteries as an...
Carrier (electron and hole) transport layers (CTLs) are essential components for boosting the performance of various organic optoelectronic devices such as organic solar cells and organic light‐emitting diodes. Considering the drawbacks of conventional CTLs (easily oxidized/unstable, demanding/costly fabrication, etc.), transition metal oxides with good carrier transport/extraction and superior stability...
Metal nanocrystals (NCs) are grown directly on the surface of reduced graphene oxide (rGO), which can maximize the rGO‐NCs contact/interaction to achieve the enhanced catalytic activity. However, it is difficult to control the size and morphology of metal NCs by in situ method due to the effects of functional groups on the surface of GO, and as a result, the metal NCs/rGO hybrids are conventionally...
In this work, a facile aqueous synthesis method is optimized to produce Mn:ZnSe/ZnS/ZnMnS sandwiched quantum dots (SQDs). In this core–shell co‐doped system, paramagnetic Mn2+ ions are introduced as core and shell dopants to generate Mn phosphorescence and enhance the magnetic resonance imaging signal, respectively. T1 relaxivity of the nanoparticles can be improved and manipulated by raising the...
A novel LiFePO4 material, in the shape of a nanomesh, has been rationally designed and synthesized based on the low crystal‐mismatch strategy. The LiFePO4 nanomesh possesses several advantages in morphology and crystal structure, including a mesoporous structure, its crystal orientation that is along the [010] direction, and a shortened Li‐ion diffusion path. These properties are favorable for their...
Encapsulated nucleic acid selective damage quantification by real‐time polymerase chain reaction is used as sensing mechanism to build a novel class of submicrometer size thermometer. Thanks to the high thermal and chemical stability, and the capability of storing the read accumulated thermal history, the sensor overcomes some of current limitations in small scale thermometry.
Hepatocellular carcinoma (HCC) is one of the deadliest cancers worldwide. Small interfering RNA (siRNA) holds promise as a new class of therapeutics for HCC, as it can achieve sequence‐specific gene knockdown with low cytotoxicity. However, the main challenge in the clinical application of siRNA lies in the lack of effective delivery approaches that need to be highly specific and thus incur low or...
Solid‐state powders of CdTe quantum dots embedded in a NaCl matrix are applied as a highly sensitive probe for luminescence thermal imaging and sensing across a wide range of temperatures by A. L. Rogach and co‐workers on page 466. They show how the emission color changes over the whole spectral range from green to red as a function of temperature, and demonstrate that the luminescence originating...