{"id":38607,"date":"2019-10-31T22:24:51","date_gmt":"2019-10-31T19:24:51","guid":{"rendered":"https:\/\/prohoster.info\/blog\/budushhee-li-fi-polyaritony-eksitony-fotony-i-nemnogo-disulfida-volframa\/"},"modified":"2019-10-31T22:24:51","modified_gmt":"2019-10-31T19:24:51","slug":"budushhee-li-fi-polyaritony-eksitony-fotony-i-nemnogo-disulfida-volframa","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/budushhee-li-fi-polyaritony-eksitony-fotony-i-nemnogo-disulfida-volframa","title":{"rendered":"A Li-Fi j\u00f6v\u0151je: polaritonok, excitonok, fotonok \u00e9s egy kis wolframdisszulfid","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\"A
\n
\n\u00c9vek \u00f3ta a vil\u00e1g tud\u00f3sai k\u00e9t dolgot kutatnak \u2014 feltal\u00e1lnak \u00e9s t\u00f6k\u00e9letes\u00edtenek. N\u00e9ha neh\u00e9z megmondani, mi a bonyolultabb. Vegy\u00fck p\u00e9ld\u00e1ul a h\u00e9tk\u00f6znapi LED-eket, amelyek olyan egyszer\u0171nek \u00e9s k\u00f6z\u00f6ns\u00e9gesnek t\u0171nnek, hogy \u00e9szre sem vessz\u00fck \u0151ket. De ha egy kis excitont, egy csipet polaritont \u00e9s \u00edzl\u00e9s szerint wolfram-diszulfidot adunk hozz\u00e1, a LED-ek m\u00e1r nem lesznek annyira prozaikusak. Mindezek a bonyolult kifejez\u00e9sek rendk\u00edv\u00fcl szokatlan komponensek nevei, amelyek lehet\u0151v\u00e9 tett\u00e9k a New York-i V\u00e1rosi F\u0151iskola tud\u00f3sai sz\u00e1m\u00e1ra, hogy l\u00e9trehozzanak egy \u00faj rendszert, amely k\u00e9pes rendk\u00edv\u00fcl gyorsan inform\u00e1ci\u00f3t tov\u00e1bb\u00edtani f\u00e9ny seg\u00edts\u00e9g\u00e9vel. Ez a fejleszt\u00e9s hozz\u00e1j\u00e1rul a Li-Fi technol\u00f3gia t\u00f6k\u00e9letes\u00edt\u00e9s\u00e9hez. Milyen konkr\u00e9t \u00f6sszetev\u0151ket haszn\u00e1ltak az \u00faj technol\u00f3gi\u00e1ban, mi a receptje ennek az \u201e\u00e9telnek\u201d, \u00e9s hogyan m\u0171k\u00f6dik az \u00faj exciton-polariton LED? Err\u0151l sz\u00f3l a tud\u00f3sok el\u0151ad\u00e1sa. Kezdj\u00fck.<\/a><\/noindex><\/p>\n

A kutat\u00e1s alapja<\/h3>\n

\nHa mindent egy sz\u00f3ra le szeretn\u00e9nk egyszer\u0171s\u00edteni, akkor ez a technol\u00f3gia a f\u00e9ny \u00e9s minden, ami ahhoz kapcsol\u00f3dik. El\u0151sz\u00f6r is, polaritonok, amelyek a fotonok k\u00f6zeg-excit\u00e1ci\u00f3kkal (fononok, excitonok, plazmonok, magn\u00f3nok stb.) val\u00f3 k\u00f6lcs\u00f6nhat\u00e1sa sor\u00e1n keletkeznek. M\u00e1sodszor, excitonok \u2014 elektronos excit\u00e1ci\u00f3k dielektrikumban, f\u00e9lvezet\u0151ben vagy f\u00e9mben, amelyek a krist\u00e1lyban v\u00e1ndorolnak an\u00e9lk\u00fcl, hogy elektromos t\u00f6lt\u00e9st vagy t\u00f6meget sz\u00e1ll\u00edtan\u00e1nak. <\/p>\n

Fontos megjegyezni, hogy ezek a kv\u00e1zir\u00e9szecsk\u00e9k nagyon kedvelik a hideget, teh\u00e1t tev\u00e9kenys\u00e9g\u00fcket csak nagyon alacsony h\u0151m\u00e9rs\u00e9kleten lehet megfigyelni, ami jelent\u0151sen korl\u00e1tozza a gyakorlati alkalmaz\u00e1st. De ez r\u00e9gen volt. Ez a munka lehet\u0151v\u00e9 tette a tud\u00f3sok sz\u00e1m\u00e1ra, hogy t\u00fall\u00e9pjenek a h\u0151m\u00e9rs\u00e9kleti korl\u00e1ton, \u00e9s szobah\u0151m\u00e9rs\u00e9kleten haszn\u00e1lj\u00e1k \u0151ket. <\/p>\n

A polaritonok f\u0151 jellemz\u0151je, hogy k\u00e9pesek \u00f6sszekapcsolni a fotonokat. A fotonok, amelyek rub\u00eddiumatomokkal \u00fctk\u00f6znek, t\u00f6meget nyernek. A t\u00f6bbsz\u00f6ri \u00fctk\u00f6z\u00e9s sor\u00e1n a fotonok visszapattannak egym\u00e1st\u00f3l, de ritka esetekben p\u00e1rokat \u00e9s tripleteket alkotnak, mik\u00f6zben elvesz\u00edtik az atomi \u00f6sszetev\u0151t, amelyet a rub\u00eddiumatom k\u00e9pvisel.<\/p>\n

De ahhoz, hogy valamit kezdj\u00fcnk a f\u00e9nnyel, el kell kapni. Ehhez van sz\u00fcks\u00e9g egy optikai rezg\u0151re, amely visszaver\u0151 elemek \u00f6sszess\u00e9g\u00e9t hordozza, amelyek \u00e1ll\u00f3 f\u00e9nyhull\u00e1mot form\u00e1lnak. <\/p>\n

A kutat\u00e1sban egyre szokatlanabb kv\u00e1zir\u00e9szecsk\u00e9k, az exciton-polaritonok j\u00e1tszanak kulcsszerepet, amelyek az excitonok \u00e9s a f\u00e9nykvantumok er\u0151s k\u00f6lcs\u00f6nhat\u00e1sa r\u00e9v\u00e9n j\u00f6nnek l\u00e9tre, amelyek egy optikai rezon\u00e1torban ragadtak. <\/p>\n

De ez nem elegend\u0151, mert sz\u00fcks\u00e9g van egy anyagi alapra, \u00fagymond. Ki is j\u00e1tszhatna jobban ezt a szerepet, mint a tranz\u00edci\u00f3s f\u00e9mek dikhalkog\u00e9njei (DPM). Pontosabban, a kibocs\u00e1t\u00f3 anyagk\u00e9nt monovastags\u00e1g\u00fa WS2 (volfr\u00e1m-diszulfid) ker\u00fclt felhaszn\u00e1l\u00e1sra, amely leny\u0171g\u00f6z\u0151 exciton k\u00f6t\u00e9si energi\u00e1kkal b\u00edr, ami az egyik f\u0151 szempont volt az anyagi alap kiv\u00e1laszt\u00e1s\u00e1n\u00e1l.<\/p>\n

Az \u00f6sszes fent le\u00edrt elem egyes\u00edt\u00e9se lehet\u0151v\u00e9 tette egy villamosan vez\u00e9relt polariton LED l\u00e9trehoz\u00e1s\u00e1t, amely szobah\u0151m\u00e9rs\u00e9kleten m\u0171k\u00f6dik.<\/p>\n

A k\u00e9sz\u00fcl\u00e9k megval\u00f3s\u00edt\u00e1s\u00e1hoz a monovastags\u00e1g\u00fa WS2-t v\u00e9kony hexagon\u00e1lis alagutakb\u00f3l k\u00e9sz\u00fclt b\u00f3r-nitrid (hBN) k\u00f6z\u00e9 helyezt\u00e9k, amelyek graf\u00e9n r\u00e9tegekk\u00e9nt szolg\u00e1lnak elektr\u00f3dokk\u00e9nt.<\/p>\n

A kutat\u00e1s eredm\u00e9nyei<\/h3>\n

\nA WS2, mint a tranz\u00edci\u00f3s f\u00e9mek dikhalkog\u00e9nje, atomv\u00e9kony Van der Waals (vdW) anyag. Ez az elektromos, optikai, mechanikai \u00e9s h\u0151m\u00e9rs\u00e9kleti tulajdons\u00e1gainak egyedis\u00e9g\u00e9t jelzi. <\/p>\n

M\u00e1s vdW anyagokkal, mint p\u00e9ld\u00e1ul a graf\u00e9n (vezet\u0151k\u00e9nt) \u00e9s a hexagon\u00e1lis b\u00f3rnitrid (hBN, szigetel\u0151k\u00e9nt) kombin\u00e1lva sz\u00e1mos villamosan vez\u00e9relt f\u00e9lvezet\u0151 eszk\u00f6z val\u00f3s\u00edthat\u00f3 meg, bele\u00e9rtve a LED-eket is. Az ilyen Van der Waals anyagok \u00e9s polaritonok kombin\u00e1ci\u00f3it m\u00e1r kor\u00e1bban is megval\u00f3s\u00edtott\u00e1k, ahogy a kutat\u00f3k ny\u00edltan kijelentett\u00e9k. Azonban a kor\u00e1bbi munk\u00e1k sor\u00e1n l\u00e9trej\u00f6tt rendszerek bonyolultak \u00e9s t\u00f6k\u00e9letlenek voltak, \u00e9s nem hozz\u00e1k felsz\u00ednre minden alkot\u00f3elem teljes potenci\u00e1lj\u00e1t.<\/p>\n

Az egyik \u00f6tlet, amelynek inspir\u00e1ci\u00f3j\u00e1t az el\u0151d\u00f6k adt\u00e1k, a k\u00e9tdimenzi\u00f3s anyagi platform alkalmaz\u00e1sa volt. Ilyen esetben lehet\u0151s\u00e9g ny\u00edlik atomv\u00e9kony kibocs\u00e1t\u00f3 r\u00e9tegekkel rendelkez\u0151 eszk\u00f6z\u00f6k megval\u00f3s\u00edt\u00e1s\u00e1ra, amelyek integr\u00e1lhat\u00f3k m\u00e1s vdW anyagokkal, mint p\u00e9ld\u00e1ul a graf\u00e9n, amelyek \u00e9rintkez\u0151k\u00e9nt \u00e9s alag\u00fatbarrik\u00e9nt (hBN) funkcion\u00e1lnak. Ezenk\u00edv\u00fcl az ilyen k\u00e9tdimenzionalit\u00e1s lehet\u0151v\u00e9 teszi a polaritons LED-ek kombin\u00e1l\u00e1s\u00e1t olyan vdW anyagokkal, amelyek k\u00fcl\u00f6nleges m\u00e1gneses tulajdons\u00e1gokkal, er\u0151s szupervezet\u0151k\u00e9pess\u00e9ggel \u00e9s\/vagy szokatlan topol\u00f3giai sz\u00e1ll\u00edt\u00e1sokkal rendelkeznek. Az ilyen \u00f6sszeolvad\u00e1s r\u00e9v\u00e9n egy teljesen \u00faj t\u00edpus\u00fa eszk\u00f6z j\u00f6het l\u00e9tre, amelynek tulajdons\u00e1gai rendk\u00edv\u00fcl szokatlanok lehetnek. De ahogyan a tud\u00f3sok mondj\u00e1k, ez egy m\u00e1sik kutat\u00e1s t\u00e9m\u00e1ja.<\/p>\n

\"A
\nK\u00e9p \u21161<\/i><\/p>\n

A k\u00e9pen 1a<\/b> a k\u00e9sz\u00fcl\u00e9k h\u00e1romdimenzi\u00f3s modellje l\u00e1that\u00f3, amely egy r\u00e9teges tort\u00e1ra eml\u00e9keztet. Az optikai rezon\u00e1tor fels\u0151 t\u00fckrek\u00e9nt egy ez\u00fcstr\u00e9teg m\u0171k\u00f6dik, m\u00edg az als\u00f3 r\u00e9teg egy 12 r\u00e9teg\u0171 elosztott. Bragg- reflektor*<\/i>. Az akt\u00edv ter\u00fcleten alag\u00fatz\u00f3na tal\u00e1lhat\u00f3.<\/p>\n

Elosztott Bragg-reflektor*<\/b> \u2014 egy t\u00f6bb r\u00e9tegb\u0151l \u00e1ll\u00f3 strukt\u00fara, amelyben az anyag f\u00e9nyt\u00f6r\u00e9si indexe peri\u00f3dikusan v\u00e1ltozik a r\u00e9tegekhez k\u00e9pest mer\u0151legesen.<\/p><\/blockquote>\n

Az alag\u00fatz\u00f3na egy vdW heterostrukt\u00far\u00e1b\u00f3l \u00e1ll, amely egy WS2 monor\u00e9teget (f\u00e9nykibocs\u00e1t\u00f3), v\u00e9kony hBN r\u00e9tegeket a monor\u00e9teg mindk\u00e9t oldal\u00e1n (alag\u00fatbarrik\u00e1d) \u00e9s graf\u00e9nt (\u00e1tl\u00e1tsz\u00f3 elektr\u00f3d\u00e1k az elektronok \u00e9s lyukak bejuttat\u00e1s\u00e1ra) tartalmaz.<\/p>\n

M\u00e9g k\u00e9t WS2 r\u00e9teg ker\u00fclt hozz\u00e1ad\u00e1sra a gener\u00e1tor teljes erej\u00e9nek n\u00f6vel\u00e9se \u00e9rdek\u00e9ben, \u00e9s ennek k\u00f6vetkezt\u00e9ben a Rabi polariton \u00e1llapotok egy\u00e9rtelm\u0171bb hasad\u00e1s\u00e1t eredm\u00e9nyezi.<\/p>\n

A rezon\u00e1tor m\u0171k\u00f6d\u00e9si m\u00f3dja a PMMA (polimetilmetakril\u00e1t, azaz akril\u00fcveg) r\u00e9teg vastags\u00e1g\u00e1nak megv\u00e1ltoztat\u00e1s\u00e1val \u00e1ll\u00edthat\u00f3 be.<\/p>\n

A felv\u00e9tel 1b<\/b> ez egy felv\u00e9tel a vdW heterostrukt\u00far\u00e1r\u00f3l az elosztott Bragg-reflektor fel\u00fclet\u00e9n. Az elosztott Bragg-reflektor, amely az als\u00f3 r\u00e9teg, magas reflektivit\u00e1s\u00e1nak k\u00f6sz\u00f6nhet\u0151en, a felv\u00e9telen az alag\u00fatz\u00f3na nagyon alacsony reflekt\u00e1l\u00e1si kontrasztot mutat, ez\u00e9rt csak a vastag hBN r\u00e9teg l\u00e1that\u00f3.<\/p>\n

A diagram 1c<\/b> a vdW heterostructure zone diagram in tunnel geometry under displacement. Electroluminescence (EL) is observed above the threshold voltage when the Fermi level of the upper (lower) graphene is shifted above (below) the conduction (valence) band of WS2, allowing an electron (hole) to tunnel into the conduction (valence) band of WS2. This creates favorable conditions for the formation of excitons in the WS2 layer with subsequent radiative (emissive) recombination of electron-hole pairs.<\/p>\n

Unlike light emitters based on p-n junctions, which require doping for operation, the EL from tunnel devices relies solely on tunneling current, thereby avoiding optical losses and any changes in resistivity caused by temperature variations. At the same time, the tunnel architecture allows for a much larger emission area compared to dichalcogenide devices based on p-n junctions.<\/p>\n

A felv\u00e9tel 1d<\/b> demonstrates the electrical characteristics of the tunneling current density (J<\/i>) as a function of bias voltage (V<\/i>) between the graphene electrodes. A sharp increase in current for both positive and negative voltages indicates the emergence of tunneling current through the structure. With optimal hBN layer thickness (~2 nm), significant tunneling current and increased carrier lifetime for radiative recombination are observed.<\/p>\n

Prior to conducting the electroluminescent experiment, the device was characterized for its white light reflectivity with angular resolution to confirm the presence of a strong exciton coupling.<\/p>\n

\"A
\n2. k\u00e9p<\/i><\/p>\n

A k\u00e9pen 2a<\/b> show the reflection spectra with angular resolution from the active region of the device, demonstrating behavior that prevents crossing. Photoluminescence (PL) was also observed under non-resonant excitation (460 nm), showing intense emission from the lower polariton branch and weaker emission from the upper polariton branch (2b<\/b>).<\/p>\n

Ezen 2s<\/b> A polariton's electroluminescence dispersion is shown at an injection of 0.1 \u03bcA\/mk2. The Rabi splitting and the resonator detuning, obtained by fitting the oscillator modes (solid and dashed white lines) to the electroluminescent experiment, are about \uff5e33 meV and \uff5e-13 meV, respectively. The resonator detuning is defined as \u03b4 = Ec \u2212 Ex, where Ex is the exciton energy, and Ec denotes the energy of the resonator photon with zero momentum in the plane. Graph 2d<\/b> is a slice at different angles from the electroluminescence dispersion. Here, the dispersion of the upper and lower polariton modes with an anti-crossing visible in the exciton resonance region is clearly shown.<\/p>\n

\"A
\n3. \u00e1bra<\/i><\/p>\n

As the tunneling current increases, the total intensity of EL rises. Weak EL from polaritons is observed near the threshold offset (3a<\/b>), while at sufficiently high offsets above the threshold, polariton emission becomes pronounced (3b<\/b>).<\/p>\n

A k\u00e9pen 3s<\/b> shows a polar plot of EL intensity as a function of angle, depicting a narrow emission cone of \u00b1 15\u00b0. The radiation diagram remains virtually unchanged for both minimum (green curve) and maximum (orange curve) excitation currents. At 3d<\/b> the integrated intensity at various moving tunneling currents is shown, which, as seen from the graph, is quite linear. Therefore, increasing the current to high values can lead to successful scattering of polaritons along the lower branch and create an extremely narrow radiation diagram due to polariton generation. However, in this experiment, it was not possible to achieve this due to the limitation related to the dielectric breakdown of the tunneling barrier hBN. <\/p>\n

Red dots on 3d<\/b> show measurements of another indicator \u2014 external quantum efficiency*<\/i>.<\/p>\n

Quantum efficiency*<\/b> is the ratio of the number of photons whose absorption led to the formation of quasiparticles to the total number of absorbed photons.<\/p><\/blockquote>\n

A megfigyelt kvantumhat\u00e9konys\u00e1g \u00f6sszehasonl\u00edthat\u00f3 m\u00e1s polaritonos LED-ek\u00e9vel (szerves anyagok, sz\u00e9ncs\u00f6vek stb. alap\u00fa). \u00c9rdemes megjegyezni, hogy a vizsg\u00e1lt eszk\u00f6z f\u00e9nykibocs\u00e1t\u00f3 r\u00e9teg\u00e9nek vastags\u00e1ga mind\u00f6ssze 0,7 nm, m\u00edg m\u00e1s eszk\u00f6z\u00f6k eset\u00e9ben ez az \u00e9rt\u00e9k sokkal nagyobb. A tud\u00f3sok nem titkolj\u00e1k, hogy a k\u00e9sz\u00fcl\u00e9k\u00fck kvantumhat\u00e9konys\u00e1ga nem a legmagasabb, de n\u00f6velhet\u0151, ha t\u00f6bb monor\u00e9teget helyeznek el a tunneling z\u00f3n\u00e1ban, v\u00e9kony hBN r\u00e9tegekkel elv\u00e1lasztva. <\/p>\n

A kutat\u00f3k azt is ellen\u0151rizt\u00e9k, hogy a rezon\u00e1tor z\u0171rzavara hogyan befoly\u00e1solja az elektromos polaritonokat, k\u00e9sz\u00edtettek egy \u00fajabb eszk\u00f6zt, de er\u0151sebb z\u0171rzavarral (-43 meV).<\/p>\n

\"A
\n4. sz\u00e1m\u00fa k\u00e9p<\/i><\/p>\n

A k\u00e9pen 4a<\/b> az eszk\u00f6z elektromos spektruma sz\u00f6gfelbont\u00e1ssal 0,2 \u00b5A\/mk2 \u00e1ram s\u0171r\u0171s\u00e9gn\u00e9l. A jelent\u0151s z\u0171rzavar miatt az eszk\u00f6z kifejezett \u00fcvegnyaki hat\u00e1st mutat az elektromos f\u00e9nykibocs\u00e1t\u00e1sban, amely a kibocs\u00e1t\u00e1s cs\u00facs\u00e1t nagy sz\u00f6gben jelzi. Ezt a k\u00e9pen is meger\u0151s\u00edtik. 4b<\/b>, ahol ennek az eszk\u00f6znek a p\u00f3lusgrafikonjait hasonl\u00edtj\u00e1k \u00f6ssze az els\u0151vel (2s<\/b>).<\/p>\n

A kutat\u00e1s r\u00e9szleteivel val\u00f3 alaposabb megismerked\u00e9shez javaslom, hogy n\u00e9zze meg a tud\u00f3sok jelent\u00e9s\u00e9t<\/a><\/noindex>.<\/p>\n

Epil\u00f3gus<\/h3>\n

\nEzek a megfigyel\u00e9sek \u00e9s m\u00e9r\u00e9sek meger\u0151s\u00edtik, hogy a polariton f\u00e9nykibocs\u00e1t\u00e1s jelen van a vdW heterostrukt\u00far\u00e1ban, amely optikai mikrorozon\u00e1torba van be\u00e9p\u00edtve. A vizsg\u00e1lt eszk\u00f6z tunneling architekt\u00far\u00e1ja lehet\u0151v\u00e9 teszi az elektronok\/lyukak be\u00e9p\u00edt\u00e9s\u00e9t \u00e9s rekombin\u00e1ci\u00f3j\u00e1t a WS2 monor\u00e9tegben, amely f\u00e9nykibocs\u00e1t\u00f3k\u00e9nt szolg\u00e1l. Fontos, hogy az eszk\u00f6z tunneling mechanizmusa nem ig\u00e9nyel dop\u00e1l\u00e1st, ami minimaliz\u00e1lja a vesztes\u00e9geket \u00e9s a h\u0151vel kapcsolatos k\u00fcl\u00f6nbs\u00e9geket.<\/p>\n

Meg\u00e1llap\u00edtott\u00e1k, hogy az elektromos f\u00e9nykibocs\u00e1t\u00e1s magas ir\u00e1nyults\u00e1g\u00fa a rezon\u00e1tor diszperzi\u00f3ja miatt. K\u00f6vetkez\u00e9sk\u00e9ppen a rezon\u00e1tor min\u0151s\u00e9g\u00e9nek jav\u00edt\u00e1sa \u00e9s a magasabb \u00e1ramell\u00e1t\u00e1s n\u00f6velni fogja a mikrorozon\u00e1tor LED-ek \u00e9s az elektromosan vez\u00e9relt mikrorozon\u00e1tor polaritonok, valamint fotonl\u00e9zerek hat\u00e9konys\u00e1g\u00e1t.<\/p>\n

Ez a munka ism\u00e9t meger\u0151s\u00edtette, hogy a tranz\u00edci\u00f3s f\u00e9mek dikh\u00e1lkog\u00e9njei val\u00f3ban egyedi tulajdons\u00e1gokkal rendelkeznek, \u00e9s sz\u00e9lesk\u00f6r\u0171 alkalmaz\u00e1si lehet\u0151s\u00e9geik vannak.<\/p>\n

Hasonl\u00f3 kutat\u00e1sok \u00e9s innovat\u00edv tal\u00e1lm\u00e1nyok jelent\u0151sen befoly\u00e1solhatj\u00e1k az adatok LED-en \u00e9s a f\u00e9nyen alapul\u00f3 tov\u00e1bb\u00edt\u00e1s\u00e1nak fejl\u0151d\u00e9s\u00e9t \u00e9s elterjed\u00e9s\u00e9t. Ilyen futurisztikus technol\u00f3gia a Li-Fi, amely l\u00e9nyegesen nagyobb sebess\u00e9get biztos\u00edthat, mint a jelenlegi Wi-Fi.<\/p>\n

K\u00f6sz\u00f6n\u00f6m a figyelmet, maradjanak k\u00edv\u00e1ncsiak \u00e9s mindenkinek j\u00f3 munkah\u00e9t k\u00edv\u00e1nok, sr\u00e1cok! \ud83d\ude42<\/p>\n

K\u00f6sz\u00f6nj\u00fck, hogy vel\u00fcnk maradnak. Tetszenek \u00d6n\u00f6knek a cikkeink? Szeretn\u00e9nek t\u00f6bb \u00e9rdekes anyagot l\u00e1tni? T\u00e1mogassanak minket rendel\u00e9s lead\u00e1s\u00e1val vagy ismer\u0151s\u00f6knek val\u00f3 aj\u00e1nl\u00e1ssal. 30% kedvezm\u00e9ny a Habr felhaszn\u00e1l\u00f3inak az egyed\u00fcl\u00e1ll\u00f3 entry-level szervereinkre, amelyet \u00d6n\u00f6knek tal\u00e1ltunk ki:<\/b> Az igazs\u00e1g a VPS (KVM) E5-2650 v4 (6 mag) 10GB DDR4 240GB SSD 1Gbps-t\u00f3l 20 doll\u00e1rig, vagy hogyan \u00e9rdemes megosztani egy szervert?<\/a><\/noindex> (el\u00e9rhet\u0151k RAID1 \u00e9s RAID10 opci\u00f3k, ak\u00e1r 24 magig \u00e9s 40GB DDR4-ig).<\/p>\n

Dell R730xd k\u00e9t alkalommal olcs\u00f3bban?<\/b> Csak n\u00e1lunk 2 x Intel TetraDeca-Core Xeon 2x E5-2697v3 2.6GHz 14C 64GB DDR4 4x960GB SSD 1Gbps 100 TB 199 doll\u00e1rt\u00f3l<\/a><\/noindex> Hollandi\u00e1ban! Dell R420 \u2014 2x E5-2430 2.2GHz 6C 128GB DDR3 2x960GB SSD 1Gbps 100TB \u2014 99 doll\u00e1rt\u00f3l!<\/b><\/b> Olvasd el ezt Hogyan \u00e9p\u00edts\u00fcnk v\u00e1llalati szint\u0171 infrastrukt\u00far\u00e1t Dell R730xd E5-2650 v4 szerverekkel, amelyek k\u00f6lts\u00e9ge 9000 eur\u00f3ban van megszabva?<\/a><\/noindex>
\n
Forr\u00e1s: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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