For a second week in a row now, PhoneArena and RadioShack are giving you the chance to get your hands on some pretty cool Android smartphones, for free! Last week, Verizon customers had a chance to snatch the mighty DROID RAZR and BIONIC, and now it's time to take care of Sprint's users as well! For those lucky fellows, what we have here are a Samsung Galaxy S II Epic 4G Touch, and a Motorola PHOTON 4G, which means we'll again have not one, but two winners. As you probably already know, this month (April 1-28) is RadioShack's Mobile Makeover Month, which aims to help you get rid of some unused technology by guaranteeing a minimum $30 (and a maximum $300) trade-in value for your old phone, upon purchasing a new one. Of course, you can trade-in all kinds of working gear: phones, cameras, MP3 players, etc., so you not only get rid of old tech and make a few bucks along the way, but you also help keep the environment clean. You can trade your old device in at a retail RadioShack location, … [Read more...] about Giveaway: Samsung Galaxy S II Epic 4G Touch and Motorola PHOTON 4G
posted on 23 Apr 2012, 23:24 1 1. KingKurogiii (Posts: 5713; Member since: 23 Oct 2011) with ICS and an S4 or better the EVO 4G LTE will be in for some trouble. xD posted on 23 Apr 2012, 23:40 2 2. illuminatemyfate (Posts: 9; Member since: 15 Dec 2011) Looks like Sprint will have a nice trio of phones coming out this year with the EVO LTE, Photon 2 and Galaxy III (assuming it comes to Sprint as well). Choices, choices. posted on 23 Apr 2012, 23:46 3 3. belovedson (Posts: 1060; Member since: 30 Nov 2010) This is a first. I never knew Sprint considered the Photon the flagship model. Out of the trio I am positive it sold the least. In fact I have only seen a handful out in the wild, while I saw tons of Evo's and SG2's. posted on 23 Apr 2012, 23:50 2 4. KingKurogiii (Posts: 5713; Member since: 23 Oct 2011) they meant Moto's Flagship for Sprint which doesn't really say a lot... posted on 24 Apr 2012, 18:54 0 13. lsutigers (Posts: 822; Member since: … [Read more...] about Comments for : Motorola PHOTON 4G sequel for Sprint this year?
The research team that announced the first optical rectenna in 2015 is now reporting a two-fold efficiency improvement in the devices — and a switch to air-stable diode materials. The improvements could allow the rectennas – which convert electromagnetic fields at optical frequencies directly to electrical current – to operate low-power devices such as temperature sensors.Ultimately, the researchers believe their device design – a combination of a carbon nanotube antenna and diode rectifier – could compete with conventional photovoltaic technologies for producing electricity from sunlight and other sources. The same technology used in the rectennas could also directly convert thermal energy to electricity.“This work takes a significant leap forward in both fundamental understanding and practical efficiency for the optical rectenna device,” said Baratunde Cola, an associate professor in the George W. Woodruff School of Mechanical Engineering at … [Read more...] about Researchers boost efficiency and stability of optical rectennas
Illinois researchers have demonstrated that sound waves can be used to produce ultraminiature optical diodes that are tiny enough to fit onto a computer chip. These devices, called optical isolators, may help solve major data capacity and system size challenges for photonic integrated circuits, the light-based equivalent of electronic circuits, which are used for computing and communications.Isolators are nonreciprocal or “one-way” devices similar to electronic diodes. They protect laser sources from back reflections and are necessary for routing light signals around optical networks. Today, the dominant technology for producing such nonreciprocal devices requires materials that change their optical properties in response to magnetic fields, the researchers said.“There are several problems with using magnetically responsive materials to achieve the one-way flow of light in a photonic chip,” said mechanical science and engineering professor and co-author of the … [Read more...] about Researchers use sound waves to advance optical communication
Silicon photonics is still a small market today, with sales at die level estimated to be US$30 million in 2016. However, it has big promise, with a 2025 market value of US$560 million at chip level and almost US$4 billion at transceiver level.According to Yole Développement (Yole), silicon photonics technology will grow from a few percent of total optical transceiver market value in 2016 to 35% of the market in 2025, mostly for intra-data center communication. The market research & strategy consulting company explains: the strongest demand is for 400G. In parallel, 200G could be only an intermediate step between 100G and 400G. “The next evolution is to develop a 400G optical port over a single fiber across 500m at less than $1 per gigabit and with power <5mW/Gb”, explains Dr. Eric Mounier, Senior Technology & Market Analyst at Yole. One terabit per second rates should follow. Although the wafer area this accounts for will be a minute part of the worldwide … [Read more...] about Silicon photonics has reached its tipping point