منابع مشابه
Material witness: quantum writ large.
430 nature materials | VOL 7 | JUNE 2008 | www.nature.com/naturematerials salts — the charged material causes the reduction of Cu2+ ions to Cu metal and the latter is deposited on the electrode (Fig. 1b). By analysis of the product, the charge density is estimated to be similar to that found in the previous experiment, around 7 × 1014 cm–2. Further electrochemical reactions were possible — incl...
متن کاملMaterial witness: A quick fix.
M AERIA L W TN SS Delicately patterned microand nanostructures can be produced without the need for laborious fabrication, by relying on physical forces to organize materials spontaneously into intricate forms. The capacity of soft materials such as surfactants and block copolymers to self-organize into regular patterns has been long recognized1–3, and superlattices and other ordered arrays in ...
متن کاملOn the Power of a Unique Quantum Witness
In a celebrated paper, Valiant and Vazirani [29] raised the question of whether the difficulty of NP-complete problems was due to the wide variation of the number of witnesses of their instances. They gave a strong negative answer by showing that distinguishing between instances having zero or one witnesses is as hard as recognizing NP, under randomized reductions. We consider the same question...
متن کاملNeurogenic positional pedal neuritis. Common pedal manifestations of spinal stenosis.
Neurogenic positional pedal neuritis is a presentation of neuritic symptoms in one or both feet usually affected by body position, specifically, the position of the spine. Its etiology is similar to that of neurogenic-induced claudication caused by spinal stenosis in that the symptoms are caused by compression or irritation of nerves of the lower lumbosacral spine, usually the fifth lumbar and ...
متن کاملPiezogenic Pedal Papules*
Dear Editor, A 24-years-old female sought medical assistance with complaints of a two-year history of bumps on her heels, initially asymptomatic, getting intensely painful over the time. She was generally healthy, and practiced running regularly. Physical examination revealed multiple skin-colored papules on both heels, more evident under pressure (Figure 1). Histopathological exam showed thick...
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ژورنال
عنوان ژورنال: Nature Materials
سال: 2004
ISSN: 1476-1122,1476-4660
DOI: 10.1038/nmat1228