Results 81 to 90 of about 4,693 (246)
High‐Temperature Persistent Luminescence and Anti‐Thermal Quenching in LiGa5O8 by Trap Engineering
Advanced Science, EarlyView.Cu/Zn co‐doping creates deep and thermally stable traps in LiGa5O8, enabling enhanced high‐temperature persistent luminescence, anti‐thermal‐quenching emission, and dynamic blue‐to‐red color evolution. ABSTRACT High‐temperature luminescent materials are essential for applications in displays, information storage, anti‐counterfeiting, and extreme ...
Yuchen Wang +11 more
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Maǧallaẗ Al-Turāṯ wa Al-TaṣmīmThe process of falsifying old documents and manuscripts of questionable authenticity is a significant problem in the field of forgery. The aim of this study is to reduce forgery and fakes in a scientific and secure manner.
Researcher. Ahmed Hosni Assoc. Prof. Dr. Yehia Othman Dr.Abdelbaky Salah
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Advanced Science, EarlyView.A concise supramolecular assembly strategy using α‐cyclodextrin and phenylpyridine derivatives affords dual‐functional materials with switchable multicolor photochromism and tunable ultralong organic phosphorescence, offering new platforms for various photonic applications. ABSTRACT Supramolecular photochromic materials capable of reversible alteration
Xue Bai +8 more
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COMPARISON BETWEEN THE CRIME OF FRAUD AND THE CRIMES OF FORGERY [PDF]
Challenges of the Knowledge SocietyThis article aims to analyze and comparatively comment on the crimes of fraud and forgery in the Romanian Criminal Code from theory and from older and more recent judicial practice. As can be seen from the examples cited in this paper, there are numerous
Alexandru STAN
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Hierarchical Physical‐Cyber Encryption via Metasurface‐Encoded Holographic Keys
Advanced Science, EarlyView.ABSTRACT Physical‐layer encryption based on metasurfaces has emerged as a promising alternative to conventional algorithmic cryptography by embedding security into physical processes. However, most existing metasurface‐based encryption schemes operate within single‐stage or static frameworks, where correct physical illumination directly reveals the ...
Zhen Liu +8 more
wiley +1 more source
Advanced Science, EarlyView.A magneto‐ionic security‐by‐materials‐design strategy exploits voltage‐driven N3– migration in selectively contacted FeCoN dots, creating reconfigurable sub‐15 nm ferromagnetic sublayers with deterministic and/or probabilistic (single‐domain↔vortex) states, voltage‐tunable probabilities and fully stochastic orientation/chirality.
Irena Spasojevic +4 more
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Advanced Science, EarlyView.An electro‐templating strategy directs the relaxation of cholesteric finger loops into discrete concentric rings whose geometry is electrically programmed. The photopolymerized structures retain the topological defect pattern and, upon heating, show reversible, castle‐like surface modulation.
Jacques A. Peixoto +4 more
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Philipp Von Stosch (1691-1757) and the Forgery of Ancient Engraved Gems
Studies in Ancient Art and CivilizationPhilipp von Stosch (1691-1757) was one of the most prominent connoisseurs and collectors of ancient engraved gems. He assembled an extensive collection of approximately 3,500 pieces and published the pioneering book Gemmae antiquae caelatae in 1724 ...
Paweł Gołyźniak
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Advanced Science, EarlyView.This work demonstrates a novel energy regulation strategy using the long‐lived S₁ state as a “kinetic capacitor” to achieve temporally decoupled integration of photoinduced deformation and multicolor fluorescence in naphthalimide‐functionalized carbon dots. This dual‐channel programmable shunting of excited‐state energy establishes a dynamic single‐use
Jianye Zhang +6 more
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