Semiconductor particles

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  • This book consists of a collection of review chapters that summarize the recent progress in the areas of metal and semiconductor nanosized crystals (nanocrystals). The interest in the optical properties of nanoparticles dates back to Faraday’s experiments on nanoscale gold. In these experiments, Faraday noticed the remarkable dependence of the color of gold particles on their size. The size dependence of the optical spectra of semiconductor nanocrystals was first discovered much later (in the 1980s) by Ekimov and coworkers in experiments on semiconductor-doped glasses.

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  • Semiconductor nanostructures are currently one of the largest and most exciting areas in solid state physics. Low-dimensional electron systems (realized in semiconductor quantum structures) are particularly appealing because they allow one to study many-particle effects in reduced dimensions. Inelastic light scattering gives direct access to the elementary excitations of those systems.

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  • Tham khảo sách 'molecular photochemistry – various aspects', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • (BQ) Part 2 book "Principles & practice of physics" has contents: Alternating currents, semiconductors, RC and RLC series circuits, electric circuits, changing electric fields, changing magnetic fields, wave and particle optics,...and other contents.

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  • Absorption of light (W or visible) by the ground state of a molecule (So) generates electronically excited states, either directly (the singlet states) or after intersystem crossing from the singlet manifold (the triplet states). Alternatively, triplet states may be generated by energy transfer from another excited state (a sensitiser). In both multiplicities, very fast internal conversion leads to the lowest states (S1 and TI respectively). These states, although still quite short lived (typical lifetime 610-8 s for S1 and ...

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  • In science we study about the laws of nature and its verification and in technology, we study the applications of these laws to human needs. Electronics is the science and technology of the passage of charged particles in a gas or vacuum or semiconductor.

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  • Photodiodes are the simplest but most versatile semiconductor optoelectronic devices. They can be used for direct detection of light in the ultraviolet, visible and infrared spectral regions, and of soft X rays and charged particles. When coupled with scintillators or other converting materials, they are also suitable for the detection of gamma rays and neutrons.

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  • Introduction LE210 Lecture Notes 2002 Edition: Introduction 1 .• Electrical Engineering is the field which deals with devices that depend solely on the motion of electrons in metals. • Electronics is the technology of the passage of charged particles in gas, vacuum, or semiconductors. LE210 Lecture Notes 2002 Edition: Introduction 2 .History • The origin of term "Electronics" began in 1895, H.A. Lorentz postulated the existence of discrete charges which he called "electrons". • 1906 De Forest built the first active electronic device, called "triode" made the first amplifier.

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  • Okuyama et al. Nanoscale Research Letters 2011, 6:351 NANO EXPRESS Open Access Magnetoluminescence from trion and biexciton in type-II quantum dot Rin Okuyama*, Mikio Eto and Hiroyuki Hyuga Abstract We theoretically investigate optical Aharonov-Bohm (AB) effects on trion and biexciton in the type-II semiconductor quantum dots, in which holes are localized near the center of the dot, and electrons are confined in a ring structure formed around the dot. Many-particle states are calculated numerically by the exact diagonalization method.

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  • There is growing concern about the safety of engineered nanoparticles, which are produced for various industrial applications. Quantum dots are colloidal semiconductor nanoparticles that have unique luminescence char-acteristics and the potential to become attractive tools for medical imaging. However, some of these particles can cause oxidative stress and induce cell death.

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