Spray-On Antenna Could Signal the Future of Wireless

Spray-On Antenna Could Signal the Future of Wireless Spray-On Antenna Could Signal the Future of Wireless Spray-On Antenna Could Signal the Future of WirelessImagine adding wireless capabilities to a car, wearable device, piece of equipment, or a home appliance by just spraying on an antenna from a can.Researchers at Drexel University say a spray made from MXene is the basis for next-generation antennae used for thin, flexible and transparent devices. A single coat of MXene could be a simpler and economic way to add wireless data collection, transmission capabilities and other smart features to factory equipment, engines, cars, and planes, to name a few.When you make transparent devices, if you want internet der dinge, you need to have transparent antennas as well, says Babak Anasori, research assistant professor at Drexel, adding that MXene can also be mixed with water or car paint. There may be many applications as IoT evolves.MXene could be a replacement for copper, which is at th e core of wireless communications in devices today.For You Nano is Engineerings New FrontierDrexel researchers originally synthesized MXene, by mixing carbon or nitrogen with a metal carbide, in 2011 to create a practical alternative to graphene. They knew MXene was strong and durable, but the antenna behavior came as a surprise. The researchers, however, found the materie retained its metal conductivity in bulk, making it an effective antenna. When they sprayed MXene ink onto an object, the researchers found it performed as good as copper antennas.To make the antenna, a water-soluble titanium carbide powder called MXene is mixed with water. Image Drexel UniversitySpraying MXene is like dropping many sheets of paper on a desk. They just come down and sit on the surface, Anasori says. There are many sheets of this, but they do not lose their metallic conductivity. Thats a huge benefit for different applications like antenna.The researchers made two strips of antennas with MXene spray ed on two films. A network analyzer used to test antennas recorded wireless performance at frequency ranges from 1.5GHz to 3.5GHz. They got peak performance a measure of data speeds and signal reach at the same 2.4GHz frequency used by Wi-Fi and Bluetooth. MXene is made from titanium carbide with carbon atoms in a 2D form. A layer of MXene consists of three layers of titanium atoms and two layers of carbon atoms. We wanted to see what substrates we could spray on, Anasori says. We spread it on paper but that adds roughness and thickness. We did it on transparent sheet with less surface roughness,MXene is simple to produce. It takes an undergraduate student with little training about 24 ours to create 100 grams, Anasori says. That compares favorably to graphene, a hard-to-produce material also being researched as an antenna.Antennae in todays wireless devices are typically attached to circuits, which will still be needed for MXene. But the material is easy to deposit and can be imp lemented in existing fabrication plants. Moreover, just a few grams of MXene can be spread across an entire football field, which means a lower volume would be required to put antennas on devices. Modems used in the latest phones have dozens of antennas and are complex to produce.Having this simple processing and being transparent, it opens up a new direction of antennas.Prof. Babak Anasori, DrexelHaving this simple processing and being transparent, it opens up a new direction of antennas, Anasori says.The researchers will now formally study how MXene behaves like an antenna. One research area is to understand how 2D MXene sheets based on different metal carbides interact with electromagnetic waves, how it can form the ultimate application, and its frequency range. The research could also explore areas like communications range, which important in determining if the material could be used in modems for 5G communications, a critical component in connecting factories.Listen to episode 2 of ASME TechCast How Engineers Close the Communication Gap For Further Discussion

10 Pre interview questions to prepare for an interview

10 Pre interview questions to prepare for an interview10 Pre interview questions to prepare for an interviewBe prepared by practicing your answers to these common interview questions.One of the fruchtwein valuable things you can do pre-interview is to go over all of the interview questions that could be asked and how to answer them. In fact, it is beneficial to say these answers out loud. This will help during the actual interview, making you sound more confident and knowledgeable. It also helps to eliminate any stuttering or filler words.Related from Ladders9 steps to the confident hire me handshake5 secret signals that your interviewer likes you8 mistakes smart people never make in job interviewsYouve gotten the interview. Now which questions should you be taking a long, hard look at?Question What you do you know about the company?Answer This may landseem like an innocent question, but it is loaded. This is the interviewer testing you to see if youve done your research. This is whe re you should talk about the companys goals, something you can easily get from their website or Facebook page. Then its time to make it personal. Talk about why you are personally drawn to these goals and how they resonate with you.Question What do you consider to be your weaknesses ?Answer This is not the time to mask actual strengths as weaknesses, such as I am too organized. This is a time when the interview wants to gauge your self-awareness and honesty. However, you also dont want to showcase any major red flags that will immediately get your resume thrown out. Talk about something that you are currently struggling with. Then, follow up that struggle with how you are currently working to improve.Question Why did you leave (or are leaving) your brde job?Answer Badmouthing a previous employer at an interview is a big no-no. The interviewer will frown upon this and may just see you as a gossiper or trouble-maker. If you are currently employed, talk about the things you are searchi ng for that you arent currently getting from your new job, such as a more team-oriented environment. If you are currently unemployed, talk about your unemployment in a more positive context. For example, the company went under, but I managed to hang on until the last round of lay-offs.Question Why should we hire you?Answer This is your time to show the interviewer that you are suited to this position. It is always a good idea to research the position before the interview. Why are they hiring someone? What do they need from the person they are hiring? Be that person. Talk about your strengths in a way that will help the company. Show you have researched the company by talking about their general practices and how you will be able to fit in easily.Question What is your greatest accomplishment?Answer You dont have to talk about an accomplishment that is job-related, but it doesnt hurt. Showcase an accomplishment that will highlight how youd be a great fit for the company and position y oure interviewing for. Dont forget to bring the passion. Interviewers want to see that this is something youre actually excited about and love to share.Question Tell me about a challenge youve faced at work and how you dealt with it.Answer This is always a tricky question to answer. Basically, the interviewer wants to get a sense of how you deal with conflict when it arises. You can mention any challenges that you faced in a previous position. Then talk about how you handled those challenges in a polite and professional manner. They also want to see that you were productive with the challenge- that there was an actual solution and not a sweeping under the rug.Question Whats a time that you disagreed with a decision made at work?Answer There is always going to be at least one time where youve disagreed with your baboes decisions or actions. This is okay. However, hiring managers want to see that you handled this disagreement politely and productively. In this case, explain how you ta lked to your boss, why you had disagreements, and how you offered alternatives to the situation. You should bring up a situation in where you actions had a positive outcome, such as a better relationship with your boss or an increase in work productivity.Question How would your boss (or co-workers) describe you?Answer This is a case where honesty is the best policy. The interviewer will have the opportunity to call a former boss and ask this question themselves. You still want to remain positive. Try to talk about strengths that you havent been able to showcase elsewhere in the interview. You may be able to talk about your ability to meet tight deadlines, or your willingness to pitch in on a project that wasnt your responsibility.Question Where do you see yourself in 5 years?Answer This is a time to demonstrate your commitment to the position you are currently interviewing. An interviewer is not looking for someone who will jump at bigger/better positions at other companies if given the opportunity. Stress that you have an interest in a long-term career with the company you are interviewing for. However, you can outline a realistic growth strategy for within the company.Question What are your salary requirements?Answer Make sure you do your research pre-interview so you know what you should be getting paid. You do not want to undersell yourself. There are many online resources that can help with this, such as our salaries section. With this research, you should be able to come up with a sortiment of pay, with the lowest value you wont go under. When negotiating salary, start at the top of this range. Make sure the interviewer knows that you are flexible and up for negotiation.

Marine Corps Recon Screening - US Military

Marine Corps Recon kontrolle - US MilitaryMarine Corps Recon Screening - US MilitaryThe RECON Marine Screeneris conducted every month in Lejeune and Camp Pendleton. Motivated Marines who wish to join the reconnaissance community are offered the chance to take the RECON Screening Test and see if they qualify for the RECON Primer Course.The test is the following 500m swim in cammies, USMC PFT (pullups, crunches, 3 mile run) Obstacle Course, Pool Skills that include treading, brick swim, gear retrievals, Long Ruck and several other very physically demanding events. The Screener Details And Qualifications The beginning challenges of becoming a reconnaissance Marine takes place at monthly screening locations conducted at the East and West Coast swimming-pools and begin bright and early at 430 a.m. Any Marine wishing to obtain the reconnaissance military occupational specialty, 0321, must be a United States citizen and releasable by their MOS monitor. The Marines must meet the followin g basic requirements have a general technical score of 105 or higher on the Armed Services Vocational Aptitude Battery, obtain a first class score on the physical fitness test, possess a combat water survival 1 qualification, be eligible for a secret clearance, have no page 12 entries in their service record book and have a tiefpunkt of 18 months remaining on current enlistment contract upon completion of the basic reconnaissance course. In addition, the Marines Battalion or Squadron Commander must submit a written endorsement for them to take part in the screening. Many qualifications are mandatory for becoming the eyes and ears of ground forces. Some go through the screening process several times before obtaining the RECON MOS or in this case, access to RECON training (Basic RECON Course). Due to this screener program and the RECON Primer Prep Course, the attrition rate is front loaded into the training. Having fully capable and qualified Marines attend the Basic RECON Course is t he goal of the Screener and Prep. The attrition rate at BRC is small comparatively. Corporal Christopher B. Davis, patrolman, Provost Marshals Office and Twentynine Palms native explained he has been out to the screening on a few different occasions, but Im not going to give up until I succeed. It takes motivation, discipline, and persistence to be successful in this training pipeline and many Marines learn the first time the level of fitness and swimming proficiency needed to be successful the next time. With the logistical concerns out of the way, the screening process started off with a 25-meter underwater swim, a deep water rifle retrieval, a tower jump, a 30-minute water tread, a five-minute flotation with trousers and a timed 500-meter swim in uniform. After the pool portion of the screening was completed, the Marines performed a physical fitness test. The Next StepPrimer Course After the Screener, the RECON Primer is next. The Basic RECON Primer Course (BRPC)lasts five w eeks and is designed to prepare and select marines that are physically ready to attend and pass the Basic Reconnaissance Course (BRC). BRPC focuses on swimming skills, pool drills, running, rucking, high repetition calisthenics, log PT, obstacle courses, land navigation and much more. The course is designed to test Marines both physically and mentally.All students regardless of rank must attend and complete BRPC prior to attending the Basic Reconnaissance Course. While BRC training can be physically challenging it takes more than just brute strength to be successful. Mental strength weighs heavily in navigating the rigors of training. Staff Sgt. Anthony J. Rivera, training staff, 1st Reconnaissance Battalion, explained, to be successful, you cant just say it takes one type of person. You just got to have heart. You just have to have that desire. The motivation for desire can stem from different sources, whether it is the opportunity for travel or the advanced training the reconnaiss ance MOS provides. Davis said, (Reconnaissance) is something different, I wanted to be more pro-active instead of reactive. First Sgt. Erik Shirreffs, Headquarters and Service company first sergeant, 1st Reconnaissance Battalion, explained another source of motivation, Recon Marines have a reputation as the best of the best. We bring the finest the Marine Corps have to offer. Once selected, Basic Recon Course Marines can expect to spend a lot of time in the water learning how to negotiate the surf and training with a Zodiac boat. Communication and land navigation skills are also covered during training. Screenings are held weekly at Camp Pendleton and at the end of every School of Infantry training. All screenings are open to local Marines. For more information, contact First Sgt. Shirreffs at DSN 361-2936 or (706) 763-2021.